The invention relates to a hot-rolled flat steel product having a Brinell hardness in the range from 330 HBW to 485 HBW, preferably in the range from 390 HBW to 485 HBW. This flat steel product consists of a steel having the following composition in % by weight: C: 0.05 to 0.35, preferably 0.09 to 0.31, more preferably 0.12 to 0.28, Si: 0.20 to 0.60, preferably 0.20 to 0.55, more preferably 0.25 to 0.55, Mn: 1.65 to 2.8, preferably 1.80 to 2.6, more preferably 2.05 to 2.4, Al: 0.01 to 0.10, and optionally one or more elements from: Mo: up to 0.315, preferably 0.018 to 0.295, more preferably 0.040 to 0.265, N: up to 0.018, P: up to 0.020, S: up to 0.010, Cr: up to 1.0, preferably 0.10 to 0.85, more preferably 0.15 to 0.75, Cu: up to 1.0, preferably 0.05 to 1.0, Ni: up to 0.30, preferably 0.02 to 0.25, Ti: up to 0.033, preferably 0.01 to 0.031, Nb: up to 0.06, preferably 0.005 to 0.06, V: up to 0.10, preferably 0.005 to 0.10, B: up to 0.0004, preferably up to 0.00035, Ca: up to 0.005, preferably 0.0005 to 0.005, W: up to 0.2, Co: up to 0.2, Sn: up to 0.05, Sb: up to 0.05 and Zr: up to 0.010, the balance being iron, including customary steel-accompanying melting-related impurities, wherein the steel has a microstructure composed of the following proportions: at least 70% by volume of martensite, up to 30% by volume of bainite, wherein a remaining balance accounts for a proportion of not more than 1.5% by volume and is formed by one or more of the following phases: ferrite, pearlite and residual austenite. The invention further relates to use of such a flat steel product and to a process for producing a corresponding flat steel product.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/30 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du cobalt
C22C 38/32 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du bore
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C23C 2/02 - Pré-traitement du matériau à revêtir, p. ex. pour le revêtement de parties déterminées de la surface
The invention relates to a hot-rolled flat steel product having a tensile strength Rm of > 950 MPa, the flat steel product being made of a steel having the following composition in % by weight: C: 0.08 to 0.20, preferably 0.08 to 0.13; Si: 0.2 to 0.6, preferably 0.2 to 0.5; Mn: 1.6 to 2.5, preferably 1.9 to 2.2; N: up to 0.03, preferably up to 0.01; P: up to 0.10, preferably up to 0.02; S: up to 0.010, preferably up to 0.002; Al: up to 0.10, preferably up to 0.05; Cu: up to 0.50, preferably up to 0.05; Cr: up to 1.0, preferably 0.3 to 0.8; Mo: up to 0.50, preferably 0.05 to 0.35, particularly preferably 0.20 to 0.30; Ni: up to 0.50, preferably up to 0.05; Ti: up to 0.20, preferably 0.01 to 0.06, particularly preferably 0.02 to 0.03; V: up to 0.30, preferably up to 0.07; Nb: up to 0.08, preferably up to 0.04; remainder iron, including usual steel-accompanying smelting-related impurities, wherein the steel has a microstructure composed of the following proportions: more than 60% by volume but less than 90% by volume of a matrix consisting of bainite and ferrite, and 10 to 40% by volume of a second phase consisting of tempered martensite, on the one hand, and of MA constituent, on the other hand, wherein the proportion by volume of the tempered martensite makes up at least half of the proportion by volume of the second phase, i.e. is ≥ 50% by volume of the second phase, and the austenite in the MA constituent makes up a proportion of ≤ 10% by volume based on the total microstructure made of the matrix and the second phase. The invention also relates to a corresponding method for producing a hot-rolled flat steel product.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/24 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du vanadium
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
3.
SHEET STEEL COMPONENT FOR A WORKING DEVICE OF A WORKING MACHINE AND METHOD FOR PRODUCING A SHEET STEEL COMPONENT OF THIS KIND
The invention relates to a sheet steel component (10) for a working device of a working machine, which sheet steel component has at least one receptacle (14) for a bearing element, in particular a receptacle (14) for a bolt. According to the invention, the at least one receptacle (14) is formed as a region of the sheet steel component (10) that surrounds the circumference of an opening (18), wherein said region has a sheet metal portion (20) having a sheet metal thickness d and a drawn collar (22) which adjoins the sheet metal portion (20) and extends in the axial direction (24) of the opening (18). The invention further relates to a use of the sheet steel component as a device component of a working device of a working machine, to a device unit for a working device of a working machine, having at least one sheet steel component (10) of this kind, and to a corresponding method for producing a sheet steel component (10) for a working device of a working machine having a receptacle (14) for a bearing element.
B21D 19/08 - Mise en forme ou autres traitements des bords, p. ex. des bords des tubes par l'action unique ou successive d'outils presseurs, p. ex. de mors d'étaux
B21D 28/26 - Perforation, c.-à-d. découpage de trous dans des tôles ou des pièces plates
B21D 28/28 - Perforation, c.-à-d. découpage de trous dans des tubes ou autres corps creux
C21D 1/00 - Procédés ou dispositifs généraux pour le traitement thermique, p. ex. recuit, durcissement, trempe ou revenu
B21D 35/00 - Procédés combinant les méthodes de traitement couvertes par les groupes
B21D 22/28 - Emboutissage d'objets cylindriques, en utilisant des matrices successives
B21D 53/10 - Fabrication d'autres objets particuliers de parties de roulementsFabrication d'autres objets particuliers de manchonsFabrication d'autres objets particuliers de sièges de soupapes ou pièces similaires
4.
STEEL AND DEVICE CREATED THEREWITH FOR BALLISTIC PROTECTION OF LIVING THINGS, MACHINERY AND EQUIPMENT, AND/OR BUILDINGS
The invention relates to a use of a steel as a material for ballistic protection of living things and/or machinery and equipment and/or buildings, said steel having a tensile strength of > 780 MPa. According to the invention, said steel is a multi-phase steel having a hardness of < 330 HB and consisting of (in wt.%) C: 0.08 to 0.35, Mn: 0.80 to 3.50, Mo: 0.10 to 1.00, optionally one or more of the following elements: N: 0.0020 to 0.0160, S: up to 0.020, Cr: 0.050 to 1.0, P: up to 0.050, Cu: 0.001 to 1.0, Si: 0.05 to 1.5, Al: 0.0030 to 1.0, Ni: 0.03 to 1.50, Nb: 0.005 to 0.150, Ti: 0.005 to 0.150, V: 0.001 to 0.300, B: 0.0005 to 0.0050, and Ca: 0.0005 to 0.0060, the remainder iron and unavoidable impurities, and having a microstructure in which the sum of the volume percentages of the microstructure constituents martensite, tempered martensite, retained austenite, M/A phase, upper bainite and/or lower bainite is at least 30.0 volume percent and in which the remaining microstructure consists of ferrite and pearlite, the volume percentage of the microstructure constituent ferrite in the microstructure being at least 20.0 volume percent. The invention also relates to a device for ballistic protection of living things and/or machinery and equipment and/or buildings, comprising at least one planar component which comprises, at in a region of ballistic protective effect, at least one steel layer made of a steel having a tensile strength of > 780 MPa, said steel being a corresponding multi-phase steel having a hardness of < 330 HB.
C21D 9/42 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour plaques de blindage
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
5.
METHOD AND DIRECT REDUCTION PLANT FOR PRODUCING DIRECT REDUCED IRON
The invention relates to a method for producing direct reduced iron from material (20) containing iron ore by means of direct reduction using at least one reduction gas in a reactor (16) of a direct reduction plant (12). In the method, the reduction gas or at least one of the reduction gases is produced by means of in-situ reformation in the reactor (16). According to the invention, direct reduced iron material (22) is also fed to the reactor (16) in addition to the material (20) containing iron ore, at least when the corresponding direct reduction process is started up. The invention also relates to a direct reduction plant (12) for producing direct reduced iron from material (20) containing iron ore by means of direct reduction using at least one reduction gas in a reactor (16) of the direct reduction plant (12).
The invention relates to a method for processing a residue mixture (12) containing the elements iron and/or calcium for industrial use by at least partially separating at least one volatile element, in particular a volatile element from the following list of elements: Zn, Pb, Na, K, Cl, S, F and P, from this residue mixture (12) in a furnace (14), wherein this residue mixture (12) is in the form of a granular residue mixture or at least comprises a granular fraction. According to the invention, the furnace (14) is designed as a rotary furnace or rotary kiln (16) and a process gas having a hydrogen fraction of more than 5 vol.%, in particular of more than 50 vol.%, is fed to the rotary furnace or rotating kiln (16) for the processing of the residue mixture (12). The invention further relates to a corresponding computer program product, which prompts a processor to carry out the method, and to a corresponding processing plant (10) for processing a residue mixture (12) containing the elements iron and/or calcium for industrial use.
The invention relates to a steel production plant (10) with a furnace assembly (32), which in turn comprises an electrically operated furnace (16) for smelting feedstocks (20, 22) of different types of material for steel production, and a feed system (18) for feeding at least a part of the feedstocks (20, 22) as a material flow via at least one feed access (56, 58) into the interior (50) of the electrically operated furnace (16), and having a direct reduction device (14) for producing sponge iron. According to the invention, the feed system (18) is designed as a feed system (18) for independently feeding at least two material flows of feedstocks (20, 22) of different material types via the feed access or feed accesses (56, 58) into the interior (50) of the furnace (16), and the feedstocks (20, 22) of different material types fed as independent material streams comprise both scrap (20) as feedstock (20) of a first of these material types and the sponge iron and/or the material based on sponge iron (22) as feedstock (22) of a second of these material types. The invention further relates to a corresponding method for feeding feedstocks (20, 22) of different material types into the interior (50) of an electrically operated furnace (16) for smelting these feedstocks (20, 22) for the production of steel.
C21C 5/52 - Fabrication de l'acier au four électrique
C21C 5/56 - Fabrication de l'acier par d'autres méthodes
C22B 1/00 - Traitement préliminaire de minerais ou de débris ou déchets métalliques
F27B 3/08 - Fours à sole, p. ex. fours à réverbérationFours à arc électrique à chauffage électrique, p. ex. fours à arc électrique, avec ou sans une autre source de chaleur
F27B 3/18 - Aménagement des dispositifs de chargement
F27D 13/00 - Appareils pour le préchauffage des chargesDispositions pour le préchauffage des charges
8.
METHOD FOR CREATING TEMPORARY CORROSION PROTECTION FOR A COIL OF AN ANNEALED STEEL STRIP, AND COIL UNIT WITH SUCH A STEEL STRIP
CoilCoil above the dew point T of the ambient atmosphere, and - applying a corrosion-protection fluid (34), in particular a corrosion-protection oil, to the end faces (24, 26) of the coil (12) provided, to form in each case a fluid barrier (32) from the corrosion-protection fluid (34) that has penetrated into a respective peripheral region (38, 40) of the gap (30) and prevents, or at least reduces, penetration of moisture from the ambient atmosphere into a central middle region (42), adjoining the peripheral regions (38, 40), of the gap (30). The invention also relates to a device for creating temporary corrosion protection for a corresponding coil (12) and to a coil unit (10) with a corresponding coil (12) and fluid barriers (32) at the end faces (24, 26) of the coil (12), which prevent penetration of moisture from the ambient atmosphere into a central middle region (42) of a gap (30) between adjacent steel-strip layers (28) of the coil (12).
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
B05B 1/00 - Buses, têtes de pulvérisation ou autres dispositifs de sortie, avec ou sans dispositifs auxiliaires tels que valves, moyens de chauffage
B05B 13/00 - Machines ou installations pour appliquer des liquides ou d'autres matériaux fluides sur des surfaces d'objets ou de matériaux par pulvérisation, non couverts par les groupes
B05B 12/00 - Aménagements de commande de la distributionAménagements de réglage de l’aire de pulvérisation
B05D 7/00 - Procédés, autres que le flocage, spécialement adaptés pour appliquer des liquides ou d'autres matériaux fluides, à des surfaces particulières, ou pour appliquer des liquides ou d'autres matériaux fluides particuliers
C21D 1/76 - Réglage de la composition de l'atmosphère
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C23F 11/00 - Inhibition de la corrosion de matériaux métalliques par application d'inhibiteurs sur la surface menacée par la corrosion ou par addition d'inhibiteurs à l'agent corrosif
9.
DIRECT REDUCTION DEVICE FOR PRODUCING SPONGE IRON, AND METHOD FOR FEEDING PARTICLES CONTAINING IRON ORE INTO THE REACTOR OF A DIRECT REDUCTION DEVICE OF THIS KIND
The invention relates to a direct reduction device (10) for producing sponge iron, in particular for an integrated steel-producing plant, comprising a reactor (12) and a feed device (14) arranged above the reactor (12) for feeding particles (16, 18) containing iron ore into the reactor (12) via a plurality of feed inlets (20, 22), wherein a central longitudinal axis (26) of the reactor (12) extends from the top (24) to the bottom end (28) of the reactor (12), and the feed inlets (20, 22) are arranged at the top (24) of the reactor (12), wherein at least some of these feed inlets (22) are distributed around the longitudinal axis (26). According to the invention, at least one of the feed inlets (20) is a feed inlet (20) close to the axis, the distance of which from the longitudinal axis (26) is smaller than the distance of at least one of the other feed inlets (22). The invention also relates to a corresponding method for feeding particles containing iron ore into the reactor (12) of a direct reduction device (10) of this kind.
m11 of 0.5 to 100 K/s and subsequently holding the temperature in the temperature range from 250°C to 450°C for 30 to 600 s and optionally subsequently performing hot-dip coating of the cold-rolled steel strip at a temperature between 380 and 500°C in the context of the continuous hot-dip coating process, and (v) subsequently performing final cooling of the continuously annealed, cold-rolled steel strip to ambient temperature at an average cooling rate of 2 K/s to 100 K/s in order to create the high-strength flat steel product. The invention also relates to a corresponding high-strength flat steel product.
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/24 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du vanadium
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
The invention relates to a composition for coating metal surfaces, comprising a binding agent which comprises a phenolic resin, an epoxy resin, in particular phenoxy resin, a polyester resin (soft resin) and a polyisocyanate, further comprising at least one conductive pigment, a corrosion resistant pigment and a solvent. The coating layer obtained from the composition by drying is corrosion-resistant, non-flammable, forming-compatible and weldable.
1211 and not more than 150 K/s, and then keeping the temperature within a temperature range between 200°C and 450°C, especially between 280°C and 450°C, for 25 to 500 s, (vi) then hot dip coating the cold- or hot-rolled steel strip at a temperature between 380 and 500°C and (vii) then cooling the hot dip coated cold- or hot-rolled steel strip at an average cooling rate of 1 K/s to 50 K/s to ambient temperature. The invention further relates to a corresponding hot dip-coated high-strength steel strip with plasticity brought about by microstructural transformation.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/44 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/46 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du vanadium
C22C 38/48 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 38/50 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
C22C 38/54 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du bore
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
14.
METHOD FOR THE LASER OVERLAP WELDING OF HIGH-STRENGTH FLAT STEEL PRODUCTS, AND FLAT STEEL COMPOSITE COMPRISING WELDED FLAT STEEL PRODUCTS
The invention relates to a method for the laser overlap welding of at least two high-strength flat steel products (12, 14), each of which has a tensile strength of more than 800 MPa and which have surfaces (18, 20; 22, 24) provided with lubricant and/or an anti-corrosive agent, said method having the steps of: - providing the flat steel products (12, 14) in an overlapping arrangement, in which the flat steel products (12, 14) are laid one over the other, - at least partly removing the lubricant and/or anti-corrosive agent in an overlap region (42) of the flat steel products (12, 14), said overlap region being provided for the overlap welding, and - subsequently carrying out an overlap welding of the flat steel products (12, 14) by irradiating a surface of a first flat steel product (12) of the flat steel products (12, 14) with a laser beam (36) in the overlap region (42), said surface facing outwards. In contrast to the lubricant and/or anti-corrosive agent on the mutually facing inner surfaces (20, 22) of the flat steel products (12, 14), the lubricant and/or anti-corrosive agent on the first flat steel product (12) surface (18) facing outwards is removed prior to the overlap welding process at least in a surface region (44) which comprises the welded connection (16) that is subsequently produced by the overlap welding process. In addition to the aforementioned method, the invention also relates to a corresponding flat steel composite (10) comprising at least two flat steel products (12, 14), each of which has a tensile strength greater than 800 MPa and surfaces (18, 20, 22, 24) provided with lubricant and/or an anti-corrosive agent and which are welded together in an overlapping geometry by means of a laser overlap welding process.
The invention relates to a method for producing a flat steel product (10) having a flat steel base (12) and a zinc- or aluminium-based metal coating (14) on at least one surface (16) of the flat steel base (12), said flat steel base (12) being produced from a steel containing one or more of the elements having an affinity for oxygen in wt.%: Al: more than 0.01, Cr: more than 0.1, Mn: more than 1.0, Si: more than 0.05. A metal layer containing tin is applied to the surface (16), then the flat steel base (12) with the metal layer is annealed and afterwards the flat steel base (12) with the zinc- or aluminium-based metal coating (14) which has been coated and annealed in this way is hot-dip galvanised. A tin-iron alloy layer having a tin component of ≥ 5 wt.% and ≤ 81 wt.% is applied as a metal layer containing tin. The invention also relates to a method for producing a flat steel product (10) having a flat steel base (12) and a zinc- or aluminium-based metal coating (14) on at least one surface (16) of the flat steel base (12), and to a use of a flat steel product (10) of this type for producing parts for motor vehicles.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C23C 16/00 - Revêtement chimique par décomposition de composés gazeux, ne laissant pas de produits de réaction du matériau de la surface dans le revêtement, c.-à-d. procédés de dépôt chimique en phase vapeur [CVD]
C23C 22/00 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p. ex. revêtement par conversion, passivation des métaux
B32B 15/00 - Produits stratifiés composés essentiellement de métal
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
16.
STEEL STRIP MADE OF A HIGH-STRENGTH MULTIPHASE STEEL AND PROCESS FOR PRODUCING SUCH A STEEL STRIP
The invention relates to a steel strip made of a high-strength multiphase steel which has a tensile strength of at least 780 MPa in the longitudinal direction, the multiphase steel consisting of the following elements in % by weight: C ≥ 0.08 to ≤ 0.23, Mn ≥ 1.5 to ≤ 3.5, Si + Al ≥ 0.25 to ≤ 2, N ≥ 0.0020 to ≤ 0.0160, P < 0.05, S < 0.01, Cu < 0.20, optionally one or more of the following elements: Ca ≥ 0.0005 to ≤ 0.0060, Cr ≥ 0.05 to ≤ 1.0, Mo ≥ 0.05 to ≤ 1.0, Ni ≥ 0.05 to ≤ 0.50, Nb ≥ 0.005 to ≤ 0.15, Ti ≥ 0.005 to ≤ 0.15, V ≥ 0.001 to ≤ 0.30 and B ≥ 0.0005 to ≤ 0.0050, balance: iron, including customary steel-accompanying impurities resulting from melting, and having a carbon equivalent CEV which is greater than 0.49 and smaller than 0.9, preferably greater than 0.49 and smaller than 0.75, wherein the carbon equivalent CEV results from the contents of the corresponding elements in % by weight according to the following formula: CEV = C + Mn/6 + (Cu + Ni)/15 + (Cr + Mo + V)/5 and wherein the ratio of the carbon equivalent CEV and the sum of the contents of Si and Al in % by weight is less than 2.3, wherein the multiphase steel has a microstructure where the sum of the volume fractions of the microstructure constituents martensite, tempered martensite, residual austenite, upper bainite and/or lower bainite is at least 30% by volume, and the residual microstructure consists of ferrite and perlite. The invention further relates to a process for producing such a steel strip.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C23C 2/00 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergéAppareils à cet effet
It is an object of the present invention to provide a high-strength hot-rolled flat steel product and a method of producing such a flat steel product, and hence to achieve, based on the steel, a combination of high strength with simultaneously high local cold formability and high economic viability. This is achieved by a high-strength hot-rolled flat steel product with high local cold formability, having a tensile strength Rm of at least 760 MPa, a yield point ratio of at least 0.8 and a hole expansion ratio of at least 30%, advantageously at least 40%, particularly advantageously at least 50%, an elongation at break of at least 10%, preferably at least 16%, a measure of cold formability of at least 0.12, advantageously at least 0.17, and a ratio of local and global cold formability of at least 5 and at most 13, and a microstructure consisting of more than 50% by volume of bainite and up to 10% by volume, advantageously up to 5% by volume, of carbon-rich microstructure constituents such as martensite, residual austenite, perlite, residual precipitation-hardened ferrite, with the following chemical composition of the steel (in % by weight): C: 0.04 to 0.08; Si: 0.1 to 0.6; Mn: 1.0 to 2.0; P: max. 0.06; S: max. 0.01; N: max. 0.012; Al: up to 0.06; Ti: up to 0.18 and/or Nb: up to 0.08; Mo: up to 0.35; with Ti+Nb more than 0.06, where there is a superstoichiometric proportion of carbon and nitrogen according to the following formula: 1.0 < (C/12+N/14) / (Ti/48+Nb/93+Mo/96), balance: iron including unavoidable steel-accompanying elements.
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/00 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
C22C 38/32 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du bore
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
The invention relates to a method for producing a component from a blank made of a medium manganese steel having 4 to 12 wt.% Mn and a TRIP effect at room temperature, in which method the blank is mechanically cut to make a prepared blank having the desired dimensions, cut edges are produced on the prepared blank by means of mechanical cutting, and the prepared blank with the cut edges is cold-formed to obtain the component at room temperature or at a temperature above room temperature but below 60°C. The method is distinguished by cost-effective production, improved formability with reduced cracking at the formed cut edges, while simultaneously reducing the forming forces. According to the invention, the mechanical cutting is performed at a pre-heating temperature in the range of 60°C to less than 250°C.
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 7/10 - Modification des propriétés physiques du fer ou de l'acier par déformation par travail à froid sur toute la section droite, p. ex. des tiges d'armature pour béton
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C21D 9/48 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles tôles embouties
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
B21D 22/00 - Mise en forme sans coupage, par estampage, repoussage ou emboutissage
B21D 35/00 - Procédés combinant les méthodes de traitement couvertes par les groupes
19.
METHOD FOR PRODUCING A STEEL STRIP WITH A MULTIPHASE STRUCTURE, AND RELATED STEEL STRIP
In order to provide a method which is intended for producing a steel strip with a multiphase structure and by which the production of complex geometries with a high energy-absorption capacity and high resistance to edge cracking is made possible, in particular compensating for the drop in yield strength, and consequently achieving a combination of a high yield strength or high yield-strength ratio and a high elongation at break, it is proposed that the method comprises the following steps: - producing a hot- or cold-rolled steel strip from a steel consisting of the following elements in % by weight: C: from 0.085 bis 0.149; Al: from 0.005 to 0.1; Si: from 0.2 to 0.75; Mn: 1.6 to 2.9; N: < 0.02; S: ≤ 0.005 and optionally of one or more of the following elements in % by weight: Cr: 0.05 to 0.5; Mo: 0.05 to 0.5; Ti: 0.005 to 0.060; Nb: 0.005 to 0.060; V: 0.001 to 0.060; B: 0.0001 to 0.0060; N: 0.0001 to 0.016; Ni: 0.01 to 0.5; Cu: 0.01 to 0.3; the remainder iron, including customary steel-accompanying elements, - first annealing, in particular continuous annealing, of the steel strip, in particular the cold-rolled steel strip, at a temperature of between 750°C and 950°C, inclusive, for the entire duration of 10 s to 1200 s, in particular from 50 s to 650 s, and subsequently first cooling of the steel strip to a temperature of between 200°C and 500°C, inclusive, at an average cooling rate of 2 K/s to 150 K/s, in particular of 5 K/s to 100 K/s, - further cooling of the steel strip to a supercooling temperature below 100°C at an average cooling rate of 1 K/s to 50 K/s, - final annealing, in particular continuous annealing, of the steel strip with a Hollomon-Jaffe parameter Hp = TH * (ln (Ʈ) +20) of > 7.5 x 103, where the maximum temperature TH in K is 100°C to 470°C, inclusive, and the total duration Ʈ in h is 2 s up to 1000 s, inclusive, and - final cooling of the steel strip to room temperature at an average cooling rate of 1 K/s to 160 K/s, in particular of 1 K/s to 30 K/s. The invention also relates to a steel strip with a multiphase structure, produced by this method.
C21D 9/48 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles tôles embouties
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C21D 1/19 - DurcissementTrempe avec ou sans revenu ultérieur par trempe interrompue
C21D 1/25 - Durcissement combiné à un recuit entre 300 °C et 600 °C, c.-à-d. affinage à chaud dit "Vergüten"
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/32 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du bore
20.
METAL SHEET HAVING ADHESION-PROMOTER COATING AS SEMI-FINISHED PRODUCT FOR THE MANUFACTURE OF METAL-THERMOPLASTIC COMPOSITE COMPONENTS, AND METHOD FOR PRODUCING A METAL SHEET OF THIS TYPE
The invention relates to a metal sheet having an adhesion-promoter coating (2) as a semi-finished product for the manufacture of metal-thermoplastic composite components, comprising a metal-containing metal sheet (1) and an adhesion-promoter coating (2), wherein a titanium-containing and/or zirconium-containing conversion layer (3) is arranged between the metal sheet (1) and the adhesion-promoter coating (2). The invention further relates to a method for producing the metal sheet (1) having an adhesion-promoter coating (2) and to the use of said metal sheet as a semi-finished product for the manufacture of metal-thermoplastic composite components.
C23C 22/36 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p. ex. revêtement par conversion, passivation des métaux au moyen de solutions aqueuses au moyen de solutions aqueuses acides d'un pH < 6 contenant des fluorures ou des fluorures complexes et des phosphates
C23C 22/62 - Traitement du fer ou des alliages à base de fer
C23C 28/02 - Revêtements uniquement de matériaux métalliques
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
21.
METHOD FOR PRODUCING A PRESS-HARDENED SHEET STEEL PART HAVING AN ALUMINIUM-BASED COATING, INITIAL SHEET METAL BLANK, AND A PRESS-HARDENED SHEET STEEL PART MADE THEREFROM
The invention relates to a method for producing a press-mould-hardened part, comprising the following steps: - providing a steel strip having an aluminium-based coating; applying an inorganic, iron-containing conversion layer to the aluminium-based coating with a layer weight in relation to iron of 3-30 mg/m2; - cold-rolling the steel strip to form a flexibly rolled strip with strip sections of different sheet thickness; - cutting an initial sheet metal blank out of the flexibly rolled strip, the initial sheet metal blank having different sheet thicknesses with a thinnest and a thickest sheet section; - press-mould-hardening the initial sheet metal blank to form a part. Alternatively, the cold-rolling can take place before the cutting, and the application of the conversion layer can take place before or after the cutting, or, instead of the cold-rolling, at least two steel strip sections which have an aluminium-based coating and different sheet thicknesses can be welded together, and the application of the conversion layer can take place before or after the welding together.
C23C 2/00 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergéAppareils à cet effet
B21D 22/00 - Mise en forme sans coupage, par estampage, repoussage ou emboutissage
B21D 26/053 - Mise en forme sans coupage, autrement qu'en utilisant des dispositifs ou outils rigides, des masses souples ou élastiques, p. ex. mise en forme en appliquant une pression de fluide ou des forces magnétiques en appliquant une pression de fluide caractérisée par le matériau des flans
B21D 26/057 - Mise en forme sans coupage, autrement qu'en utilisant des dispositifs ou outils rigides, des masses souples ou élastiques, p. ex. mise en forme en appliquant une pression de fluide ou des forces magnétiques en appliquant une pression de fluide caractérisée par le matériau des flans les flans étant composés de tôles de nature ou d'épaisseur différentes
B21D 26/059 - Mise en forme sans coupage, autrement qu'en utilisant des dispositifs ou outils rigides, des masses souples ou élastiques, p. ex. mise en forme en appliquant une pression de fluide ou des forces magnétiques en appliquant une pression de fluide caractérisée par le matériau des flans les flans étant stratifiés
B21D 35/00 - Procédés combinant les méthodes de traitement couvertes par les groupes
C23C 2/04 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergéAppareils à cet effet caractérisé par le matériau de revêtement
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
22.
STEEL MATERIAL FOR A TORSIONALLY STRESSED COMPONENT, METHOD FOR PRODUCING A TORSIONALLY STRESSED COMPONENT FROM SAID STEEL MATERIAL, AND COMPONENT MADE THEREOF
The invention relates to a steel material for a torsionally stressed component, in particular a driveshaft, wherein the steel material has a minimum tensile strength of 800 MPs, and the microstructure consists of more than 50 vol.% of bainite, having an alloy with the following composition in wt.%: C: 0.02 to 0.3; Si: up to 0.7; Mn: 1.0 to 3.0; P: max. 0.02; S: max. 0.01; N: max. 0.01; Al: up to 0.1; Cu: up to 0.2; Cr: up to 3.0; Ni: up to 0.3; Mo: up to 0.5; Ti: up to 0.2; V: up to 0.2; Nb: up to 0.1; B: up to 0.01; where 0.02 ≤ Nb + V + Ti ≤ 0.25, residual iron, and smelting impurities. The steel material is inexpensive and has a good torsional fatigue strength when used for a torsionally stressed component. The invention also relates to a method for producing a component made of the steel material and to a component made thereof.
C21D 6/00 - Traitement thermique des alliages ferreux
B21C 1/00 - Fabrication des tôles, fils, barres, tubes métalliques ou d'autres produits semi-finis similaires par étirage
B21C 37/06 - Fabrication de tôles, barres, fils, tubes ou profilés métalliques ou de produits semi-finis similaires, non prévue ailleursFabrication de tubes de forme particulière des tubes ou tuyaux métalliquesProcédés combinés pour fabriquer des tubes, p. ex. pour fabriquer des tubes à parois multiples
B21C 37/30 - Finition des tubes, p. ex. calibrage, polissage
B21D 3/00 - Redressage ou remise en forme des barres, tubes ou profilés métalliques, ou des objets déterminés faits à partir de ces matériaux, qu'ils comportent ou non des parties en tôle
C21D 7/02 - Modification des propriétés physiques du fer ou de l'acier par déformation par travail à froid
C21D 8/10 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de corps tubulaires
C21D 9/08 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour corps tubulaires ou tuyaux
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
The invention relates to a method for producing a welded component (1). The aim of the invention is to provide a method with which mechanical properties are achieved in the welding seam region, in particular fatigue strength, comparable to those in the non-influenced base material, preferably even with a higher degree of strength than in the base material. This is achieved in that the method has the following steps: - producing a hot-rolled steel product (2, 3) made of a high-strength air-hardenable steel with a material thickness of at least 1.5 mm, wherein the hot-rolled steel product (2, 3) has the following chemical composition by mass: C: 0.03 to 0.4, preferably 0.06 to 0.12, particularly preferably 0.08 to 0.10; Mn: 1.0 to 4.0, preferably 1.80 to 2.20, particularly preferably 1.80 to 2.00; Si: 0.09 to 2.0, preferably 0.22 to 0.34, particularly preferably 0.25 to 0.30; Al: 0.02 to 2.0, preferably 0.02 to 0.06, particularly preferably 0.02 to 0.05; P <=0.1, preferably ≤ 0.020; S <=0.1, preferably ≤ 0.010; N: 0.001 to 0.5, preferably 0.0030 to 0.0125, particularly preferably 0.0030 to 0.0080; Ti: 0.01 to 0.2, preferably 0.010 to 0.050, particularly preferably 0.020 to 0.030; Cr: 0.05 to 2.0, preferably 0.60 to 1.0, particularly preferably 0.70 to 0.80; B: 0.001 to 0.1, preferably 0.0015 to 0.0060, particularly preferably 0.0025 to 0.0035; Mo: 0.01 to 1.0, preferably 0.10 to ≤ 0.40, particularly preferably 0.15 to 0.30; V: 0.01 to 0.2, preferably 0.05 to ≤ 0.09, particularly preferably 0.05 to 0.08; optionally: Ni: 0.02 to 1.0; Nb: 0.01 to 0.1; residual iron including conventional steel-accompanying elements, - subsequently air hardening the produced hot-rolled steel product (2, 3), - then deforming the hot-rolled steel product (2, 3) in the air-hardened state in order to form a component, and - producing welding connections using a fusion welding process on the component. The invention also relates to a welded component (1) produced in this manner.
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
B23K 9/23 - Soudage ou découpage à l'arc tenant compte des propriétés des matériaux à souder
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/24 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du vanadium
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/32 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du bore
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C22C 38/44 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/46 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du vanadium
C22C 38/50 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
C22C 38/54 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du bore
24.
METHOD FOR PRODUCING A STEEL STRIP WITH IMPROVED BONDING OF METALLIC HOT-DIP COATINGS
The invention relates to a method for producing a cold- or hot-rolled steel strip with a metallic coating, the steel strip having iron as the main constituent and, in addition to carbon, an Mn content of 8.1 to 25.0 wt.% and optionally one or more of the alloying elements Al, Si, Cr, B, Ti, V, Nb and/or Mo, wherein the surface of the uncoated steel strip is first cleaned, a layer of pure iron is applied to the cleaned surface, an oxygen-containing, iron-based layer containing more than mass percent of oxygen is applied to the layer of pure iron, the steel strip with the oxygen-containing, iron-based layer is then annealed and is reduction-treated in a reducing furnace atmosphere during the annealing treatment in order to obtain a surface consisting mainly of metallic iron, and the steel strip thus treated and annealed is then hot-dip coated with the metallic coating. This creates uniform and reproducible bonding conditions for the coating on the steel strip surface. Furthermore, the invention relates to a steel strip with a metallic coating applied by hot dipping and the use of such a steel strip.
C21D 1/68 - Revêtements temporaires ou matériaux d'enrobage appliqués avant ou pendant le traitement thermique
C21D 1/70 - Revêtements temporaires ou matériaux d'enrobage appliqués avant ou pendant le traitement thermique pendant le chauffage ou la trempe
C21D 1/74 - Procédés de traitement en gaz neutre, en atmosphère contrôlée, sous vide ou dans des matières pulvérulentes
C21D 6/00 - Traitement thermique des alliages ferreux
C23C 2/02 - Pré-traitement du matériau à revêtir, p. ex. pour le revêtement de parties déterminées de la surface
C23C 2/04 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergéAppareils à cet effet caractérisé par le matériau de revêtement
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
C25D 3/20 - Dépôt électrochimiqueBains utilisés à partir de solutions de fer
C25D 3/22 - Dépôt électrochimiqueBains utilisés à partir de solutions de zinc
C25D 5/10 - Dépôt de plusieurs couches du même métal ou de métaux différents
25.
METHOD FOR PRODUCING A STEEL STRIP WITH IMPROVED BONDING OF METALLIC HOT-DIP COATINGS
The invention relates to a method for producing a cold-rolled or hot-rolled steel strip having a metal coating, the steel strip comprising iron as the main constituent and, in addition to carbon, an Mn content of 4.1 to 8.0 wt.% and optionally one or more of the alloy elements Al, Si, Cr, B, Ti, V, Nb and/or Mo, wherein the surface of the uncoated steel strip is cleaned, a layer of pure iron is applied to the cleaned surface, an oxygen-containing iron-based layer is applied to the layer of pure iron and contains more than mass percent oxygen, the steel strip with the oxygen-containing iron-based layer is then subjected to an annealing treatment, and, in order to attain a surface consisting substantially of metallic iron, is subjected to a reduction treatment in a reducing furnace atmosphere during the course of the annealing treatment, and then the steel strip thus treated and annealed is coated with the metallic coating by hot dipping. Uniform and reproducible adhesion conditions are hereby achieved for the metallic coating on the steel strip surface. The invention also relates to a steel strip having a metallic coating applied by means of hot dipping, and to the use of such a steel strip.
C21D 1/68 - Revêtements temporaires ou matériaux d'enrobage appliqués avant ou pendant le traitement thermique
C21D 1/70 - Revêtements temporaires ou matériaux d'enrobage appliqués avant ou pendant le traitement thermique pendant le chauffage ou la trempe
C21D 1/74 - Procédés de traitement en gaz neutre, en atmosphère contrôlée, sous vide ou dans des matières pulvérulentes
C21D 6/00 - Traitement thermique des alliages ferreux
C23C 2/02 - Pré-traitement du matériau à revêtir, p. ex. pour le revêtement de parties déterminées de la surface
C23C 2/04 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergéAppareils à cet effet caractérisé par le matériau de revêtement
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
C25D 3/20 - Dépôt électrochimiqueBains utilisés à partir de solutions de fer
C25D 3/22 - Dépôt électrochimiqueBains utilisés à partir de solutions de zinc
C25D 5/10 - Dépôt de plusieurs couches du même métal ou de métaux différents
26.
STEEL PRODUCT MADE OF LIGHTWEIGHT STEEL CONTAINING MANGANESE AND METHOD FOR PRODUCTION THEREOF
The invention relates to a steel product made of lightweight steel containing manganese, having a minimum notched bar impact work at -40 °C in the transverse direction of ≥ 20 Joules, preferably at least 30 Joules, having the following chemical composition in wt.%: C: 0.1 to 1.8, preferably 0.3 to 1.5; Mn: 15 to 35, preferably 20 to 30; Al: 6 to 12, preferably 7 to 10; Si: 0.2 to 1.5, preferably 0.5 to 1.2; Mo: 0.1 to 1.2, preferably 0.5 to 1.1; V: 0.05 to 0.5, preferably 0.07 to 0.3; Nb: 0.01 to 0.5, preferably 0.05 to 0.3; Cr: 0.05 to 3, preferably 0.1 to 2; Ni; 0.05 to 3, preferably 0.1 to 2; P: < 0.04; S: < 0.02; N: < 0.02; remainder iron, including unavoidable elements accompanying steel, together with the optional addition of one or more of the following elements: Ti, Cu, B, Co, W, Zr, Ca and Sn, having a joint consisting of at least 40 vol.% austenite, less than 60 vol.% ferrite, remainder martensite and/or carbides up to 2%, consisting of kappa carbides and/or vanadium carbides and/or niobium carbides and/or molybdenum carbides having a good combination of strength, distension and forming properties. The invention further relates to a method for producing a steel product in the form of a flat steel product made from the aforementioned lightweight steel containing manganese.
C22C 38/44 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/46 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du vanadium
C22C 38/48 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/08 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour corps tubulaires ou tuyaux
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
The invention relates to an aluminum-based coating of a flat steel product. The coating comprises an aluminum-based coating which is applied in a hot-dipping method and comprises 1.8 to 15 mass.% of silicon, preferably 5 to 13 mass.% of silicon, more preferably 8 to 11 mass.% of silicon. The aim of the invention is to provide an aluminum-based coating for a flat steel product, in particular for press mold hardening components, said coating offering a shortened required minimum oven dwell time and a sufficiently large processing window when heating in an oven. This is achieved in that the surface of the coating has a degree of absorption for thermal radiation ranging between 0.35 and 0.95 prior to an annealing treatment, wherein the degree of absorption relates to an oven temperature ranging from 880 to 950 °C during the austenitizing annealing treatment. The invention additionally relates to an improved method for producing a flat steel product with an aluminum-based coating, to an inexpensive method for producing press-hardened components from such flat steel products, and to a press-hardened component made of such flat steel products.
The invention relates to a sheet metal blank for producing a heat-shaped and press-hardened steel sheet component (7) in a heat-shaping method, wherein, in a heat treatment step, the sheet metal blank (6) is heat-treated to above the material-specific austenitizing temperature Ac3; in an inserting step, the heat-treated sheet metal blank (6) is inserted into a shaping die (3); in a press-hardening step, the sheet metal blank (6) is heat-shaped and cooled, forming the sheet metal component (7), which, in a removal step, is removed from the opened shaping die (3), wherein the sheet metal blank (6) has, as a base material (10), a hardenable steel having a metallic scale protection coating on both sides. According to the invention, the metallic scale protection coating is formed as a copper layer (11). In the heat treatment step, the copper layer (11) converts into an electrically conductive copper oxide layer (13) bonded to the steel base material (10).
C23C 10/28 - Diffusion à l'état solide uniquement d'éléments métalliques ou de silicium dans la couche superficielle de matériaux métalliques au moyen de solides, p. ex. au moyen de poudres, de pâtes
C21D 9/00 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet
C21D 1/673 - Dispositifs pour trempe pour la trempe en coquille
C21D 8/00 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique
B21D 22/02 - Estampage utilisant des dispositifs ou outils rigides
C25D 3/38 - Dépôt électrochimiqueBains utilisés à partir de solutions de cuivre
C25D 5/10 - Dépôt de plusieurs couches du même métal ou de métaux différents
C25D 5/36 - Prétraitement des surfaces métalliques à revêtir de métaux par voie électrolytique de fer ou d'acier
C25D 5/50 - Post-traitement des surfaces revêtues de métaux par voie électrolytique par traitement thermique
C25D 7/00 - Dépôt électrochimique caractérisé par l'objet à revêtir
29.
INTERIOR HIGH PRESSURE-FORMED COMPONENT MADE OF STEEL, USE OF A STEEL FOR PRECURSORS FOR PRODUCING AN INTERIOR HIGH PRESSURE-FORMED COMPONENT, AND PRECURSOR THEREFOR
The invention relates to an interior high pressure-formed component made of ferritic-bainitic steel, characterized by a precursor having at least 5 volume-% bainite, which has a composition containing 0.04-0.12 wgt.-% C, 0.8-2.0 wgt.-% Mn, ≤ 0.60 wgt.-% Si, ≤ 0.02 wgt.-% P, ≤ 0.01 wgt.-% S, 0.01-0.08 wgt.-% Al, < 0.008 wgt.-% B, ≤ 0.3 wgt.-% Cu, ≤ 0.6 wgt.-% Cr, ≤ 0.3 wgt.-% Ni, ≤ 0.3 wgt.-% Mo, ≤ 0.1 wgt.-% Ti, ≤ 0.1 wgt.-% V, and ≤ 0.06 wgt.-% Nb, the remainder iron and routine contaminants due to melting and a total proportion of Nb and/or V and/or Ti in the composition of at least 0.02 wgt.-%.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
C21D 7/12 - Modification des propriétés physiques du fer ou de l'acier par déformation par travail à froid sur toute la section droite, p. ex. des tiges d'armature pour béton par mandrinage des corps tubulaires
C21D 9/08 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour corps tubulaires ou tuyaux
C21D 9/50 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour joints de soudure
B21B 37/26 - Variation automatique de l'épaisseur selon un programme prédéterminé pour obtenir une bande ayant une succession de longueurs avec des épaisseurs constantes différentes
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/10 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de corps tubulaires
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
30.
METHOD AND SYSTEM FOR DYNAMICALLY VISUALIZING STRUCTURAL DEFORMATIONS IN A CONTINUOUS CASTING SYSTEM
The invention relates to a method for dynamically visualizing structural deformations in a continuous casting system which has different measurement points arranged on components of the system, the temperature of each component being measured at the position of the measurement point. A three-dimensional temperature distribution model for the entire continuous casting system is generated on the basis of the measurement values determined at the different measurement points of the continuous casting system, and the temperature distribution model is used to read the temperature at any position of the continuous casting system. A structural deformation within the continuous casting system is ascertained and visualized using the finite element method and using the temperature measurement values determined at the different measurement points of the continuous casting system.
B22D 11/16 - Commande ou régulation des opérations ou du fonctionnement
G01B 21/32 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour mesurer la déformation dans un solide
31.
METHOD FOR PRODUCING A STEEL STRIP WITH IMPROVED BONDING OF METALLIC HOT-DIP COATINGS
The invention relates to a method for producing a steel strip, which contains along with iron as the main constituent and unavoidable impurities one or more of the oxygen-affine elements in % by weight: Al: more than 0.02, Cr: more than 0.1, Mn: more than 1.3 or Si: more than 0.1, wherein the surface of the steel strip is cleaned, the steel strip is annealed and the steel strip thus treated and annealed is subsequently coated with a hot-dip coating. In order to be less cost-intensive and achieve uniform, reproducible bonding conditions for the coating, it is proposed that, before the annealing, the steel strip is oxygen-treated at temperatures below 200°C, wherein, by the formation of oxides with iron, an oxide film containing iron oxide is formed on the surface of the steel strip and in the course of the annealing is reductively treated under a reducing atmosphere to achieve a surface that substantially consists of metallic iron.
The invention relates to a method for producing a component by hot-forming a precursor product made of a steel having a TRIP and/or TRIP/TWIP effect, having a manganese content of over 12% by weight, advantageously having up to 20% by weight and an austenite content of at least 25 to 95% by volume, advantageously at least 35 to 90% by volume, the remainder being ferrite or bainite, martensite, tempered martensite or perlite. In order to provide an improved production method which is also cost-effective and in which a higher residual formability of the component at room temperature and a significantly reduced inclination toward delayed, hydrogen-induced crack formation are achieved, according to the invention, the precursor product is formed at a hot-forming temperature above 60°C and below the Ac1-transition temperature and the original austenite content is retained in full after the forming or at least 10% of the original austenite content is retained after the forming. The invention also relates to a hot-formed component produced according to said method, and to a method for producing a steel strip as a precursor product for hot-forming a component.
B21D 35/00 - Procédés combinant les méthodes de traitement couvertes par les groupes
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 7/00 - Modification des propriétés physiques du fer ou de l'acier par déformation
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
33.
HIGH-STRENGTH, HOT-ROLLED FLAT STEEL PRODUCT WITH HIGH EDGE CRACK RESISTANCE AND SIMULTANEOUSLY HIGH BAKE-HARDENING POTENTIAL, AND METHOD FOR PRODUCING A FLAT STEEL PRODUCT OF THIS KIND
The invention relates to a high-strength, hot-rolled flat steel product with high edge crack resistance and simultaneously high bake-hardening potential made of a steel with a yield strength Rp 0.2 of 660 to 820 MPa, a BH2 value of more than 30 MPa, and a hole expansion ratio of more than 30%, and a structure consisting of two main constituents, wherein a first main constituent of the structure accounts for a proportion of at least 50%, consisting of one or more individual constituents of ferrite, tempered bainite, and tempered martensite, each with less than 5% carbides, and wherein a second main constituent of the structure accounts for a proportion of 5% to 50%, consisting of one or more individual constituents of martensite, residual austenite, bainite or perlite with the following chemical composition of the steel (in % by weight): C: 0.04 to 0.12; Si: 0.03 to 0.8; Mn: 1 to 2.5; P: max. 0.08; S: max. 0.01; N: max. 0.01; AI: up to 0.1; Ni+Mo: up to 0.5; Nb: up to 0.08; Ti: up to 0.2; Nb+Ti: min. 0.03; Cr: up to 0.6; the remainder being iron including unavoidable steel-associated elements. Furthermore, the invention relates to a method for producing a flat steel product of this type.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
C21D 6/00 - Traitement thermique des alliages ferreux
The invention relates to an ultrahigh strength multiphase steel having a minimum tensile strength of 980 MPa containing (in wt.%): C ≥ 0.075 to ≤ 0.115; Si ≥ 0.400 to ≤ 0.500; Mn ≥ 1.900 to ≤ 2.350; Cr ≥ 0.250 to ≤ 0.400; AI ≥ 0.010 to ≤ 0.060; N ≥ 0.0020 to ≤ 0.0120; P ≤ 0.020; S ≤ 0.0020; Ti ≥ 0.005 to ≤ 0.060; Nb ≥ 0.005 to ≤ 0.060; V ≥ 0.005 to ≤ 0.020; B ≥ 0.0005 to ≤ 0.0010; Mo ≥ 0.200 to ≤ 0.300; Ca ≥ 0.0010 to ≤ 0.0060; Cu ≤ 0.050; Ni ≤ 0.050; Sn ≤ 0.040; H ≤ 0.0010; and residual iron, including customary steel-accompanying smelting-related impurities, wherein the total content of Mn+Si+Cr is ≥ 1.750 to ≤ 2.250 wt.% with a view to a processing window which is as wide as possible during the annealing process, in particular during the continuous annealing process, of cold strips of said steel.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
The invention relates to a continuous casting machine comprising a permanent casting mold that can be made to oscillate by an oscillation device and is followed by a plurality of segments equipped with strand guiding rollers which are arranged on support structure and are each connected to the support structure at a plurality of connection points, at least one of the bearing points of the segment that immediately follows the permanent casting mold being a floating bearing.
The invention relates to a steel alloy having improved corrosion resistance under high-temperature loading for usage temperatures of from 300°C to 1200°C, in particular 800°C to 1200°C, having the following chemical composition in % by weight: C: > 0.01 to 1.0; AI: 3.0 to 12.0; Cr: 2.0 to 15.0; Mn: 5.0 to 30.0; Si: 0.10 to 3.0; Cu: 0.001 to 2.5; Ni: 0.001 to 5.0; S: to 0.010; P: to 0.010; N: 0.001 to 0.050; B: 0.00005 to 0.0250; Mo: 0.01 to 5.0; where: 12 < Cr + 2*AI+3*Si < 24; and at least one of the elements Ti, V and Nb with the following contents in % by weight: Ti: 0.01 to 1.0, V: 0.01 to 1.0, Nb: 0.01 to 1.0, the remainder being formed by iron with impurities caused by the melting and optional addition of at least one of the rare earth elements Y, La, Ce or the elements Hf, Sr and Zr. The invention also relates to method for producing steel strips from said steel alloy and advantageous fields of application.
The invention relates to a method for coating a steel sheet or steel strip to which an aluminium-based coating is applied in a dip-coating process and the surface of the coating is freed of a naturally occurring aluminium oxide layer. In order to provide a low-cost method for coating steel sheets or steel strips that makes the steel sheets or steel strips outstandingly suitable for the production of components by means of press hardening and for the further processing thereof, it is proposed that transition metals or transition metal compounds are subsequently deposited on the freed surface of the coating to form a top layer. The invention also relates to a method for producing press-hardened components from the aforementioned steel sheets or steel strips with an aluminium-based coating.
C23C 2/28 - Post-traitement thermique, p. ex. par traitement dans un bain d'huile
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
C25D 5/48 - Post-traitement des surfaces revêtues de métaux par voie électrolytique
38.
METHOD FOR THE OPTIMIZED PRODUCTION OF A COMPONENT WITH AT LEAST ONE SECONDARY FORMED ELEMENT
The invention relates to a method for the optimized production of a component, in particular from steel, with at least one secondary formed element, comprising the steps of a) providing a blank which has been cut to size at room temperature from a strip or a sheet and in which cut-outs and/or holes have optionally been created by stamping or cutting operations; b) thermal treatment of selected edge regions of the blank that have been cold-hardened by the stamping or cutting operations, in which the edge regions are heated to a temperature of at least 600°C for a maximum 10 seconds; c) forming the thermally treated edge regions of the blank at ambient temperature to obtain a component with an unfinished secondary formed element; characterized by an additional step d), a calibrating step for obtaining the component with the secondary formed element, wherein the unfinished secondary formed element is formed at ambient temperature into a secondary formed element that has an increased and/or more uniform wall thickness in comparison with the unfinished secondary formed element.
B21D 19/08 - Mise en forme ou autres traitements des bords, p. ex. des bords des tubes par l'action unique ou successive d'outils presseurs, p. ex. de mors d'étaux
B21D 22/02 - Estampage utilisant des dispositifs ou outils rigides
39.
METHOD FOR PRODUCING A COMPONENT BY FURTHER FORMING OF A PREFORMED CONTOUR
The invention relates to a method for producing a component by further forming of a preformed contour of a blank, wherein the blank which has previously been cut to size at room temperature from a strip or a sheet is subjected to a first shaping operation at ambient temperature after optional further production steps carried out at ambient temperature, such as for example stamping or cutting operations to achieve clearances or apertures, in selected edge regions that have been cold-hardened by the stamping or cutting operations to obtain a preformed contour. Optionally the edge regions that are already intended for shaping, but at least the edge regions that have already undergone the first shaping are thereby heated to a temperature of at least 600°C for a maximum time of 10 seconds and, at any desired time after this thermal treatment, the edge regions are subjected to a second shaping or to further shaping operations at ambient temperature with prior thermal treatments in each case.
B21D 19/08 - Mise en forme ou autres traitements des bords, p. ex. des bords des tubes par l'action unique ou successive d'outils presseurs, p. ex. de mors d'étaux
B21D 22/02 - Estampage utilisant des dispositifs ou outils rigides
40.
METHOD AND DEVICE FOR OPERATING A DIRECT REDUCTION REACTOR FOR PRODUCING DIRECT-REDUCED IRON FROM IRON ORE
The invention relates to a method for operating a direct reduction reactor (1) for producing direct-reduced iron (2) from iron ore (3), wherein the CO2- and H2O-containing furnace gas (4) arising in the production of direct-reduced iron (2) is fed to a high-temperature electrolytic cell (5), in which CO- and H2-containing synthesis gas (6) and oxygen are produced by means of co-electrolysis.
The invention relates to a method for producing a wheel disc from a dual-phase steel, having improved cold workability of cold-solidified, mechanically separated sheet metal edges, comprising the following method steps: - providing a hot-rolled strip or a hot-rolled strip sheet of the claimed alloy composition having a dual phase structure, consisting of a ferritic matrix, into which a predominantly martensitic second phase is embedded in an insular manner, - cutting a sheet at room temperature and optionally carrying out further punching or cutting operations, - heating exclusively the sheet metal edge regions of the blank, which have been cold-solidified by the cutting or punching operations, to a temperature of at least 700 °C with a dwell time of at most 10 seconds and subsequent cooling with air, and - cold forming the blank in one or more steps to form a wheel disc at room temperature.
C21D 7/02 - Modification des propriétés physiques du fer ou de l'acier par déformation par travail à froid
B21D 53/26 - Fabrication d'autres objets particuliers de roues ou de pièces similaires
B21D 53/30 - Fabrication d'autres objets particuliers de roues ou de pièces similaires de jantes de roues
C21D 9/34 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour bandages de rouesTraitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour jantes
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
42.
METHOD FOR PRODUCING CHASSIS PARTS FROM MICRO-ALLOYED STEEL WITH IMPROVED COLD WORKABILITY
The invention relates to a method for producing a chassis part from micro-alloyed steel, having an improved cold workability of cold-solidified, mechanically separated sheet-metal edges, comprising the following method steps: - providing a hot-rolled strip or a hot-rolled strip sheet of the claimed alloy composition in weight percent. cutting a blank at room temperature and optionally carrying out further punching or cutting operations, - heating exclusively the sheet metal edge regions of the blank, which have been cold-solidified by the cutting or punching operations, to a temperature of at least 700 °C with a dwell time of at most 10 seconds and subsequent cooling with air, - cold forming the blank in one or more steps to form a chassis part at room temperature.
The invention relates to a seamlessly produced and semi-hot-formed pipe made of a medium manganese steel, having a TRIP and/or TWIP effect during deformation, having the following chemical composition in wt%: C: 0.0005 to 0.9, Mn: 4 to 12, P: ឬ 0.1, S: ឬ 0.1, N: ឬ 0.1, the remainder iron including unavoidable steel-accompanying elements, with the optional addition of one or more of the following elements: Al, Si, Cr, Ni, Nb, V, Ti, Mo, Sn, Cu, W, Co, Zr, Ta, Te, Sb, B, Ca, having a microstructure consisting of 5 to 90 vol% austenite, less than 40 vol% ferrite and/or bainite and the remainder martensite. Said seamlessly produced and semi-hot-formed pipe can be economically produced and has a good property combination of strength and elongation at break, a good residual toughness, and a TRIP and/or TWIP effect. The invention further relates to a method for producing such a pipe.
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/10 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de corps tubulaires
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C22C 38/44 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
The invention relates to a seamlessly produced tube of a medium manganese steel, comprising a TRIP and/or TWIP effect during deforming, with the following chemical composition in % by weight: C: 0.0005 to 0.9; Mn: 4 to 10; Al: 0.01 to 10; P: ឬ 0.1; S: ឬ 0.1; N: ឬ 0.1; where Al + Mn ᡶ 6.15, preferably ᡶ 6.50, the remainder being iron including unavoidable steel-accompanying elements, with optional alloying of one or more of the following elements: Si, Cr, Ni, Nb, V, Ti, Mo, Sn, Cu, W, Co, Zr, Ta, Te, Sb, B, Ca, having a microstructure consisting of 5 to 90% by volume austenite, less than 40% by volume ferrite and/or bainite and the remainder martensite. This seamlessly produced tube can be produced at low cost and has a good combination of properties comprising strength and elongation at rupture and also a good residual toughness as well as a TRIP and/or TWIP effect. The invention also relates to a method for producing such a tube.
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/10 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de corps tubulaires
The invention relates to a steel product for low-temperature use having a minimum notch impact work at -196 °C in the transverse direction of ≥ 50 J/cm2, having the following chemical composition in wt%: C: 0.01 to ឬ 0.3, preferably 0.03 to 0.15; Mn: 4 to ឬ 10, preferably 4 to ឬ 8; Al: 0.003 to 2.9, preferably 0.03 to 0.4; Mo: 0.01 to 0.8, preferably 0.1 to 0.5; Si: 0.02 to 0.8, preferably 0.08 to 0.3; Ni: 0.005 to 3, preferably 0.01 to 3; P: ឬ 0.04; S: ឬ 0.02; N: ឬ 0.02; remainder iron including unavoidable steel-accompanying elements, wherein for the alloy composition the equation 6 ឬ 1.5 Mn+Ni ឬ 8 is satisfied, with optional addition of one or more of the following elements: Ti, V, Cr, Cu, Nb, B, Co, W, Zr, Ca, and Sn, or for the alloy composition, the equation 0.11 ឬ C + Al ឬ 3 is satisfied, with the optional addition of one or more of the following elements: Ti, V, Cr, Cu, Nb, B, Co, W, Zr, Ca, and Sn, or the alloy composition, in addition to Ni, contains one or more of the elements B, V, Nb, Co, W, or Zr, with the optional addition of one or more of the following elements: Ti, Cr, Cu, Ca, and Sn, having a structure comprising 2 to 90 % by volume of austenite, less than 40 % by volume of ferrite and/or bainite and the rest martensite. Said steel product can be produced economically and exhibits an advantageous combination of strength and strain properties at low temperatures and, optionally, a TRIP and/or TWIP effect. The invention further relates to a method for producing a steel product in the form of a flat steel product or a seamless tube.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
B21C 1/00 - Fabrication des tôles, fils, barres, tubes métalliques ou d'autres produits semi-finis similaires par étirage
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/00 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/10 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de corps tubulaires
C21D 9/08 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour corps tubulaires ou tuyaux
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/08 - Alliages ferreux, p. ex. aciers alliés contenant du nickel
C22C 38/10 - Alliages ferreux, p. ex. aciers alliés contenant du cobalt
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
C22C 38/16 - Alliages ferreux, p. ex. aciers alliés contenant du cuivre
C22C 38/18 - Alliages ferreux, p. ex. aciers alliés contenant du chrome
46.
METHOD FOR PRODUCING A FLAT STEEL PRODUCT MADE OF A MANGANESE-CONTAINING STEEL, AND SUCH A FLAT STEEL PRODUCT
The invention relates to a method for producing a flat steel product made of a medium manganese steel having a TRIP/TWIP effect. The aim of the invention is to achieve an improvement in the yield strength when a sufficient residual deformability of the produced flat steel product is obtained. This aim is achieved by the following steps: cold rolling a hot or cold strip, annealing the cold-rolled hot or cold strip at 500 to 840 °C for 1 minute to 24 hours, temper rolling or finishing the annealed hot or cold strip to form a flat steel product having a degree of deformability between 0.3 % and 60 %. The invention further relates to a flat steel product produced according to said method and to a use thereof.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
47.
METHOD FOR PRODUCING A RE-SHAPED COMPONENT FROM A MANGANESE-CONTAINING FLAT STEEL PRODUCT AND SUCH A COMPONENT
The invention relates to a method for producing a component from a medium manganese flat steel product having 4 to less than 10 wt% Mn, 0.0005 to 0.9 wt% C, 0.02 to 10 wt% Al, the remainder iron, including unavoidable steel-accompanying elements, and having a TRIP effect at room temperature. In order to produce a component, which is distinguished by very high strengths and an increased residual strain and re-shaping capacity, the flat steel product, according to the invention, is re-shaped by at least one re-shaping step to form a component and, before and/or during and/or after the at least one re-shaping step, the flat steel product is cooled down to a temperature of the flat steel product of less than room temperature to -196 °C. The invention further relates to a component produced by this method and to a use for said components.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
48.
METHOD FOR PRODUCING A SHAPED COMPONENT FROM A MEDIUM-MANGANESE FLAT STEEL PRODUCT AND SUCH A COMPONENT
The invention relates to a method for producing a component from a medium-manganese flat steel product with 4 to 12 wt% Mn, preferably more than 5 to less than 10 wt% Mn, and with TRIP/TWIP effect. In order to improve the degrees of deformation of the shaped component while at the same time reducing the forming forces, the invention proposes shaping the flat steel product into a component in a first shaping step at a temperature of the flat steel product of 60°C to below Ac3, preferably from 60°c to 450°C. The invention also relates to a component produced according to said method and to a use for said components.
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C21D 8/10 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de corps tubulaires
C21D 6/04 - Durcissement par refroidissement au-dessous de 0° C
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
49.
METHOD FOR PRODUCING A HOT OR COLD STRIP AND/OR A FLEXIBLY ROLLED FLAT STEEL PRODUCT MADE OF A HIGH-STRENGTH MANGANESE STEEL AND FLAT STEEL PRODUCT PRODUCED BY SAID METHOD
The invention relates to a method for producing a flexibly rolled flat steel product made of a high-strength manganese steel and having final thicknesses that vary as required from section to section. In order to achieve a high maximum degree of deformation, the following method steps are proposed: providing a galvanized or non-galvanized hot or cold strip with an alloy composition containing (in wt%): C: 0.0005 to 0.9; Mn: 4 to 12; Al: up to 10; P: ឬ0.1; S: ឬ0.1; N: ឬ0.1; the remainder being iron, including unavoidable steel-alloying elements, with optional addition of one or more of the following elements (in wt%): Si: up to 6; Cr: up to 6; Nb: up to 1; V: up to 1.5; Ti: up to 1.5; Mo: up to 3; Sn: up to 0.5; Cu: up to 3; W: up to 5; Co: up to 8; Zr: up to 0.5; Ta: up to 0.5; Te: up to 0.5: B: up to 0.15; - flexibly rolling the hot or cold strip in one rolling step or in multiple rolling steps to the final thicknesses that vary as required from section to section, with the hot or cold strip at a temperature of 60°C to below Ac3, preferably from 60°C to 450°C, prior to the first rolling step. The invention also relates to a method for producing a hot or cold strip made of a high-strength manganese steel and to a flat steel product which is flexibly rolled according to said method.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/10 - Alliages ferreux, p. ex. aciers alliés contenant du cobalt
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
C22C 38/16 - Alliages ferreux, p. ex. aciers alliés contenant du cuivre
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/24 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du vanadium
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/30 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du cobalt
C22C 38/32 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du bore
C22C 38/34 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de silicium
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C22C 38/60 - Alliages ferreux, p. ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
B22D 11/00 - Coulée continue des métaux, c.-à-d. en longueur indéfinie
B21B 37/24 - Variation automatique de l'épaisseur selon un programme prédéterminé
B21B 37/26 - Variation automatique de l'épaisseur selon un programme prédéterminé pour obtenir une bande ayant une succession de longueurs avec des épaisseurs constantes différentes
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
B32B 15/18 - Produits stratifiés composés essentiellement de métal comportant du fer ou de l'acier
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C23C 2/02 - Pré-traitement du matériau à revêtir, p. ex. pour le revêtement de parties déterminées de la surface
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C21D 9/48 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles tôles embouties
B21B 1/22 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilésSéquence des opérations dans les trains de laminoirsInstallation d'une usine de laminage, p. ex. groupement de cagesSuccession des passes ou des alternances de passes pour laminer des bandes ou des feuilles en longueurs indéfinies
50.
METHOD FOR PRODUCING A HIGH-STRENGTH STEEL STRIP WITH IMPROVED PROPERTIES FOR FURTHER PROCESSING, AND A STEEL STRIP OF THIS TYPE
The invention relates to a method for producing a high-strength steel strip with a TRIP/TWIP effect, which method is cost-effective and with which method the steel strip has improved properties for further processing, in particular a good combination of strength and forming properties, and increased resistance to hydrogen-induced delayed fracture, to hydrogen embrittlement and to liquid metal embrittlement. The method comprises the following steps: - melting a steel melt containing (in wt%): C: 0.1 to ឬ 0.3; Mn: 4 to ឬ 8; Al: ᡶ 1 to 2.9; P: ឬ 0.05; S: ឬ 0.05; N: ឬ 0.02; remainder iron including unavoidable steel-associated elements, with the optional addition of one or more of the following elements (in wt%): Si: 0.05 to 0.7; Cr: 0.1 to 3; Mo: 0.01 to 0.9; Ti: 0.005 to 0.3; B: 0.0005 to 0.01 in a blast furnace process or arc furnace process with optional vacuum treatment of the melt; - casting the steel melt to form a rough strip by means of a horizontal or vertical strip-casting process close to the final dimensions, or casting the steel melt to form a slab or thin slab by means of a horizontal or vertical slab- or thin-slab-casting process; - heating to a rolling temperature of 1050 to 1250°C or inline rolling from the casting heat; - hot-rolling the rough strip or slab or thin slab to form a hot strip having a thickness of 12 to 0.8 mm at a final rolling temperature of 1050 to 800°C; - coiling the hot strip at a temperature of more than 200 to 800°C; - pickling the hot strip; - annealing the hot strip in a continuous or batch annealing installation for an annealing time of 1 min to 48 h and at temperatures of 540 to 840°C; - cold-rolling the hot strip at room temperature or elevated temperature in one or more rolling passes; - optionally electrolytically galvanising or hot-dip galvanising the steel strip or applying another type of organic or inorganic coating. The invention also relates to a high-strength and cost-effective steel strip having improved properties for further processing.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
51.
COMPOSITE MATERIAL WITH IMPROVED SHAPING PROPERTIES AND METHOD FOR PRODUCING SUCH A COMPOSITE MATERIAL AND A SHAPED COMPONENT FROM IT
The invention relates a composite material (1) consisting of a metallic bottom flat element (2), a metallic top flat element (2’) and an intermediate layer of thermosetting plastic arranged between the bottom flat element (2) and the top flat element (2’). In order to provide a composite material (1) comprising an intermediate layer of thermosetting plastic that has improved shaping properties and moreover can be produced at low cost and by a reliable process, it is proposed that the intermediate layer consists of three or more thermosetting materials (3, 4, 5), wherein one thermosetting material (3) is in a set state and the other thermosetting material (4) is in a non-set state and the first thermosetting material (3) has a polymerization temperature of between 50 and 100°C, the second thermosetting material (4) has a polymerization temperature of between 170 and 220°C and a third thermosetting material (5) has a polymerization temperature of between 230 and 260°C. The invention also relates to a method for producing such a composite material and a method for producing a shaped component from it.
B32B 7/02 - Propriétés physiques, chimiques ou physicochimiques
B32B 7/14 - Liaison entre couches utilisant des adhésifs interposés ou des matériaux interposés ayant des propriétés adhésives appliqués en disposition espacée, p. ex. en bandes
B32B 15/08 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique
B32B 15/092 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique comprenant des résines époxy
B32B 15/095 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique comprenant des polyuréthanes
B32B 15/18 - Produits stratifiés composés essentiellement de métal comportant du fer ou de l'acier
B32B 27/08 - Produits stratifiés composés essentiellement de résine synthétique comme seul composant ou composant principal d'une couche adjacente à une autre couche d'une substance spécifique d'une résine synthétique d'une sorte différente
B32B 27/38 - Produits stratifiés composés essentiellement de résine synthétique comprenant des résines époxy
B32B 27/40 - Produits stratifiés composés essentiellement de résine synthétique comprenant des polyuréthanes
B32B 3/00 - Produits stratifiés comprenant une couche ayant des discontinuités ou des rugosités externes ou internes, ou une couche de forme non planeProduits stratifiés comprenant une couche ayant des particularités au niveau de sa forme
B32B 3/02 - Caractérisés par des caractéristiques de forme en des endroits déterminés, p. ex. au voisinage des bords
B32B 3/08 - Caractérisés par des caractéristiques de forme en des endroits déterminés, p. ex. au voisinage des bords caractérisés par des éléments ajoutés à des endroits déterminés
B32B 3/18 - Produits stratifiés comprenant une couche ayant des discontinuités ou des rugosités externes ou internes, ou une couche de forme non planeProduits stratifiés comprenant une couche ayant des particularités au niveau de sa forme caractérisés par une couche discontinue, c.-à-d. soit continue et percée de trous, soit réellement constituée d'éléments individuels caractérisés par une couche interne formée d'éléments individuels
52.
STEEL STRIP FOR PRODUCING A NON-ORIENTED ELECTRICAL STEEL, AND METHOD FOR PRODUCING SUCH A STEEL STRIP
The invention relates to a steel strip for producing a non-oriented electrical steel. To achieve greatly improved frequency-independent magnetic properties, in particular greatly reduced hysteresis losses, in comparison with known electrical steels, the following alloy composition in wt% is proposed: C: ≤0.03, Al: 1 to 12, Si: 0.3 to 3.5, Mn: >0.25 to 10, Cu: >0.05 to 3.0, Ni: >0.01 to 5.0, total of N, S and P: at most 0.07, remainder iron and smelting-related impurities, with the optional addition of one or more elements from the group Cr, Mo, Zn and Sn, wherein the steel strip has an insulation layer substantially consisting of Al2O3 and/or SiO2 with a thickness in the range from 10 µm to 100 µm. The invention also relates to a method for producing such a steel strip.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/08 - Alliages ferreux, p. ex. aciers alliés contenant du nickel
C22C 38/16 - Alliages ferreux, p. ex. aciers alliés contenant du cuivre
H01F 1/16 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriésEmploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux métaux ou alliages sous forme de feuilles
53.
METHOD FOR PRODUCING A COLD-ROLLED STEEL STRIP HAVING TRIP-CHARACTERISTICS MADE OF A HIGH-STRENGTH MANGAN-CONTAINING STEEL
The invention relates to a method for producing a cold-rolled steel strip made of a high-strength mangan-containing steel with TRIP-characteristics, containing (in wt.%) C: 0.0005 to 0.9, Mn: more than 3.0 to 12, with the remaining portion being iron including unavoidable steel-associated elements, with the optional addition of one or more of the following elements (in wt.%): AI: up to 10; Si: up to 6; Cr: up to 6; Nb: up to 1.5; V: up to 1.5; Ti: up to 1.5; Mo: up to 3; Cu: up to 3; Sn: up to 0.5; W: up to 5; Co: up to 8; Zr: up to 0.5; Ta: up to 0.5; Te: up to 0.5; B: up to 0.15; P: max. 0.1, in particular ឬ 0.04; S: max. 0.1, in particular ឬ 0.02; N: max. 0.1, in particular ឬ 0.05; Ca: up to 0.1. According to the invention, in order to improve a corresponding method, the cold-rolling to a required end thickness occurs at a temperature of over 50°C to 400°C before the first impact.
The invention relates to a component made of press-form-hardened, aluminium-based coated steel sheet, the coating having a covering which contains aluminum and silicon applied in the hot-dip process, characterized in that the press-form-hardened component in the transition region between steel sheet and covering has an inter-diffusion zone I, wherein, depending on the layer application of the covering before heating and press hardening, the thickness of the inter-diffusion zone I obeys the following formula: I [µm] ឬ (1/35) x application on both sides [g/m2] + (19/7), on the inter-diffusion zone I there is formed a zone having various intermetallic phases having an average total thickness between 8 and 50 µm, on which zone there is in turn arranged a covering layer containing aluminum oxide and/or hydroxide having an average thickness of at least 0.05 µm to at most 5 µm. The invention further relates to a method for producing the aforementioned component.
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
The invention relates to a method for producing a component by hot-forming a pre-product composed of steel, wherein the pre-product is heated to a temperature above 60 °C and below the Ac3 transformation temperature and then formed in this temperature range, wherein the component has a minimum tensile strength of 700 MPa and high elongation at break, wherein the pre-product has the following alloy composition in percent by weight: C: 0.0005 to 0.9; Mn: more than 3.0 to 12; the remainder iron including unavoidable steel-accompanying elements, with the optional addition of one or more of the following elements (in percent by weight): Al: up to 10; Si: up to 6; Cr: up to 6; Nb: up to 1.5; V: up to 1.5; Ti: up to 1.5; Mo: up to 3; Cu: up to 3; Sn: up to 0.5; W up to 5; Co: up to 8; Zr: up to 0.5; Ta: up to 0.5; Te: up to 0.5; B: up to 0.15; P: at most 0.1, in particular ឬ 0.04; S: at most 0.1, in particular ឬ 0.02; N: at most 0.1, in particular ឬ 0.05; Ca: up to 0.1. The invention further relates to a hot-formed component produced from a steel.
B23K 35/30 - Emploi de matériaux spécifiés pour le soudage ou le brasage dont le principal constituant fond à moins de 1550 C
B23K 35/02 - Baguettes, électrodes, matériaux ou environnements utilisés pour le brasage, le soudage ou le découpage caractérisés par des propriétés mécaniques, p. ex. par la forme
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/24 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du vanadium
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/32 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du bore
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
57.
ROLLER, IN PARTICULAR SKIN PASS ROLLER, AND SKIN PASSED FLAT PRODUCT
The invention relates to a roller, in particular a skin pass roller, with a surface structure with stochastically distributed structure elements (3) of stochastic size, in particular for producing flat products from a metal material, in particular from a steel material, by way of which flat products with an improved oil retention capability and oil distribution can be skin passed, since the structure elements (3) have a height in the range from 20 to 300 µm, the structure elements (3) have a width in the range from 60 to 600 µm, and the structure elements (3) have a number of from 5 to 60 per mm². The invention also relates to a flat product made from a metal material, in particular skin passed by way of an above-mentioned roller (1), with a surface structure with stochastically distributed depressions (4) of stochastic size, in which method an improved oil retention capability and oil distribution are achieved by virtue of the fact that the depressions (4) have a depth in the range from 15 to 90 µm, the depressions (4) have a width in the range from 50 to 400 µm, the depressions (4) have a number of from 4 to 60 per mm², and the sum of the area of the depressions projected onto the flat product has an area proportion of 0.41 or greater.
The invention relates to a planishing roll having a surface structure, in particular for producing flat products from a metallic material, in particular from a steel material. In order to devise an improved planishing roll having a surface structure, the surface structure according to the invention has a material ratio of 2% at a depth of 0.2 µm to 9 µm, preferably at a depth of 0.8 µm to 5.5 µm, the depth is measured, starting from a zero line, in the direction of an axis of rotation of the planishing roll, the zero line runs parallel to the axis of rotation of the planishing roll and, starting from the surface of the planishing roll, the zero line is displaced in the direction of the axis of rotation of the planishing roll until the material ratio of the planishing roll is 0.1%. The invention further relates to a method for planishing a flat product made of a metallic material, in particular from a steel material, by using said planishing roll, and to a flat product produced by said method.
B21B 1/22 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilésSéquence des opérations dans les trains de laminoirsInstallation d'une usine de laminage, p. ex. groupement de cagesSuccession des passes ou des alternances de passes pour laminer des bandes ou des feuilles en longueurs indéfinies
B21B 27/00 - CylindresLubrification, refroidissement ou chauffage des cylindres en cours d'utilisation
59.
ALUMINIUM-BASED COATING FOR STEEL SHEETS OR STEEL STRIPS AND METHOD FOR THE PRODUCTION THEREOF
The invention relates to an aluminium-based coating for steel sheets or steel strips, the coating comprising an aluminium-based coat applied in a hot-dip coating method, a covering layer containing aluminium oxide and/or hydroxide being arranged on the coat. The aim of the invention is to provide an aluminium-based coating which is highly suitable for hot forming and cold forming. To this end, the covering layer is produced by means of plasma oxidation and/or hot water treatment at temperatures of at least 90°C, advantageously at least 95°C, and/or steam treatment at temperatures of at least 90°C, advantageously at least 95°C. Alternatively, the covering layer containing aluminium oxide and/or hydroxide can be produced by anodic oxidation, the coat being produced in a molten bath with a Si content of between 8 and 12 wt. %, and an Fe content of between 1 and 4 wt. %, the remainder being aluminium. The invention also relates to a method therefor and to a method for producing press-hardened components therewith, and to the associated press-hardened component.
C23C 8/36 - Diffusion à l'état solide uniquement d'éléments non métalliques dans la couche superficielle de matériaux métalliquesTraitement chimique de surface par réaction entre le matériau métallique de la surface et un gaz réactif, laissant dans le revêtement des produits de la réaction, p. ex. revêtement de conversion, passivation des métaux au moyen de gaz au moyen de gaz ionisés, p. ex. nitruration ionique
The invention relates to a metal/plastic composite component in which the metallic component is materially bonded to a thermoplastic plastic material applied thereto. Said metallic component, on the surface areas coming into contact with the plastic material, comprises a corrosion protective coating, made of a phosphate coating, for a bonded adhesive composite between the metallic component and the plastic material.
B29C 65/00 - Assemblage d'éléments préformésAppareils à cet effet
C23C 22/07 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p. ex. revêtement par conversion, passivation des métaux au moyen de solutions aqueuses au moyen de solutions aqueuses acides d'un pH < 6 contenant des phosphates
C23C 22/36 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p. ex. revêtement par conversion, passivation des métaux au moyen de solutions aqueuses au moyen de solutions aqueuses acides d'un pH < 6 contenant des fluorures ou des fluorures complexes et des phosphates
C23C 22/42 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p. ex. revêtement par conversion, passivation des métaux au moyen de solutions aqueuses au moyen de solutions aqueuses acides d'un pH < 6 contenant des molybdates, des tungstates ou des vanadates et des phosphates
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
61.
COMPOSITE PIPE CONSISTING OF A CARRIER PIPE AND AT LEAST ONE PROTECTIVE PIPE, AND METHOD FOR THE PRODUCTION THEREOF
The invention relates to a composite pipe consisting of a carrier pipe (2) and at least one protective pipe (3), wherein the carrier pipe (2) is produced from a non-corrosion resistant steel, which has at least a partially austenitic structure, with the following chemical composition (in wt.%): C: 0.005 to 1.4; Mn: 5 to 35; the remainder being iron including unavoidable elements accompanying steel, with the optional alloying of the following elements (in wt.%): Ni: 0 to 6; Cr: 0 to 9; Al: 0 to 15; Si: 0 to 8; Mo: 0 to 3; Cu: 0 to 4; V: 0 to 2; Nb: 0 to 2; Ti: 0 to 2; Sb: 0 to 0.5; B: 0 to 0.5; Co: 0 to 5; W: 0 to 3; Zr: 0 to 4; Ca: 0 to 0.1; P: 0 to 0.6; S: 0 to 0.2; N: 0.002 to 0.3. The invention also relates to a method for producing such a composite pipe (1) of this type, wherein the carrier pipe (2) and the at least one protective pipe (3) are mechanically or metallurgically connected to one another.
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
B21C 37/06 - Fabrication de tôles, barres, fils, tubes ou profilés métalliques ou de produits semi-finis similaires, non prévue ailleursFabrication de tubes de forme particulière des tubes ou tuyaux métalliquesProcédés combinés pour fabriquer des tubes, p. ex. pour fabriquer des tubes à parois multiples
B21C 37/15 - Fabrication de tubes de formes particulièresFabrication de garnitures de tubes
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/18 - Alliages ferreux, p. ex. aciers alliés contenant du chrome
C22C 38/34 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de silicium
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C22C 38/40 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
F16L 58/00 - Protection des tuyaux ou des accessoires pour tuyaux contre la corrosion ou l'entartrage
62.
HIGH-TENSILE MANGANESE STEEL CONTAINING ALUMINIUM, METHOD FOR PRODUCING A SHEET-STEEL PRODUCT FROM SAID STEEL AND SHEET-STEEL PRODUCT PRODUCED ACCORDING TO THIS METHOD
The invention relates to a high-tensile manganese steel containing aluminium, said steel having the following chemical composition (in % by weight): C: 0.01 to ឬ 0.3; Mn: 4 to ឬ 10; Al: ᡶ 1 to 4; Si: 0.01 to 1; Cr: 0.1 to 4; Mo; 0.02 to 1; P: ឬ 0.1; S: ឬ 0.1; N: ឬ 0.3; the remainder being iron with unavoidable elemental inclusions associated with steel, and with optional alloying of one or more of the following elements (in % by weight): V: 0.01 to 1; Nb: 0.01 to 1; Ti: 0.01 to 1; Sn: 0 to 0.5; Cu: 0.005 to 3; W: 0.03 to 3; Co: 0.05 to 3; Zr: 0.03 to 0.5 and Ca: 0.0005 to 0.1. Said steel has an excellent combination of strength-, strain- and deformation characteristics. The invention also relates to a method for producing a sheet-steel product from said steel and to a sheet-steel product produced according to this method.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/18 - Alliages ferreux, p. ex. aciers alliés contenant du chrome
C22C 38/20 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du cuivre
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/24 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du vanadium
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/30 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du cobalt
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
63.
HIGH-TENSILE STEEL CONTAINING MANGANESE, USE OF SAID STEEL FOR FLEXIBLY-ROLLED SHEET-STEEL PRODUCTS, AND PRODUCTION METHOD AND ASSOCIATED SHEET-STEEL PRODUCT.
The invention relates to a high-tensile steel containing manganese, in particular for producing a flexibly-rolled sheet-steel product in the form of a hot- or cold-rolled strip, with the following chemical composition (in % by weight): C: 0.005 to 0.6; Mn: 4 to 10; Al: 0.005 to 4; Si: 0.005 to 2; P: 0.001 to 0.2; S: up to 0.05; N: 0.001 to 0.3; the remainder being iron with unavoidable elemental inclusions associated with steel, and with optional alloying of one or more of the following elements (in % by weight): Sn: 0 to 0.5; Ni: 0 to 2; Cu: 0.005 to 3; Cr: 0.1 to 4; V: 0.005 to 0.9; Nb: 0.005 to 0.9; Ti: 0.005 to 0.9; Mo: 0.01 to 3; W: 0.1 to 3; Co: 0.1 to 3; B: 0.0001 to 0.05; Zr: 0.005 to 0.5; Ca: 0.0002 to 0.1. Said steel has an excellent combination of strength-, strain- and deformation characteristics. The invention also relates to the use of said steel for producing a flexibly-rolled sheet-steel product, to a method for producing a sheet-steel product from said steel and to a sheet-steel product produced according to this method.
C23C 2/02 - Pré-traitement du matériau à revêtir, p. ex. pour le revêtement de parties déterminées de la surface
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/18 - Alliages ferreux, p. ex. aciers alliés contenant du chrome
C22C 38/20 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du cuivre
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/40 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel
C22C 38/42 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cuivre
C22C 38/44 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
64.
HIGH-ALLOY STEEL AND METHOD FOR PRODUCING PIPES FROM SAID STEEL BY MEANS OF INTERNAL HIGH-PRESSURE SHAPING
The invention relates to a high-alloy steel, in particular for producing pipes shaped by means of internal high pressure, having high cold formability, TRIP and/or TWIP properties, a partially or completely austenitic microstructure having at least 5% residual austenite, and having the following chemical composition (in wt%): Cr: 7 to 20; Mn: 2 to 9; Ni: up to 9; C: 0.005 to 0.4; N: 0.002 to 0.3; the remainder being iron including unavoidable steel-accompanying elements, with optional addition of the following elements (in wt%): Al: 0 to 3; Si: 0 to 2; Mo: 0.01 to 3; Cu: 0.005 to 4; V: 0 to 2; Nb: 0 to 2; Ti: 0 to 2; Sb: 0 to 0.5; B: 0 to 0.5; Co: 0 to 5; W: 0 to 3; Zr: 0 to 2; Ca: 0 to 0.1; P: 0 to 0.6; S: 0 to 0.2. The invention further relates to a method for producing pipes from said steel, said pipes being shaped by means of internal high pressure.
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/10 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de corps tubulaires
C22C 38/18 - Alliages ferreux, p. ex. aciers alliés contenant du chrome
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
C21D 9/08 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour corps tubulaires ou tuyaux
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
B23K 35/30 - Emploi de matériaux spécifiés pour le soudage ou le brasage dont le principal constituant fond à moins de 1550 C
The invention relates to a formable lightweight steel having improved mechanical properties and high resistance to delayed hydrogen-induced cracking and hydrogen embrittlement, comprising the following elements (in wt.%): C 0.02 to ≤1.0; Mn 3 to 30; Si ≤4; P max. 0.1; S max. 0.1; N max. 0.03; Sb 0.003 to 0.8, particularly advantageously to 0.5, as well as at least one or more of the following carbide-forming elements in the specified proportions (in wt.%): Al ≤15; Cr ᡶ0.1 to 8; Mo 0.05 to 2; Ti 0.01 to 2; V 0.005 to 1; Nb 0.00 to 1; W 0.005 to 1; Zr 0.001 to 0.3; with the remainder consisting of iron including the usual steel-accompanying elements, with the optional addition of the following elements in wt.%: Ni max. 5, Co max. 10, Ca max. 0.005, B max. 0.01 and Cu 0.05 to 2. The invention also relates to a method for producing said lightweight steel.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
C22C 38/18 - Alliages ferreux, p. ex. aciers alliés contenant du chrome
C22C 38/34 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de silicium
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C22C 38/60 - Alliages ferreux, p. ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
66.
METHOD FOR PRODUCING A HOT-ROLLED STRIP COMPOSED OF A BAINITIC MULTI-PHASE STEEL AND HAVING A ZN-MG-AL COATING, AND CORRESPONDING HOT-ROLLED STRIP
The invention relates to a method for producing a hot-rolled strip composed of a bainitic multi-phase steel and having a Zn-Mg-Al coating, comprising the following steps: melting a steel melt containing (in weight percent): C: 0.04 - 0.11, Si: ឬ= 0.7, Mn: 1.4 - 2.2, Mo: 0.05 - 0.5, Al: 0.015 – 0.1, P: up to 0.02, S: up to 0.01, B: up to 0.006, and at least one element from the group Nb, V, Ti in accordance with the following condition: 0.02 ឬ= Nb + V + Ti ឬ= 0.20, the remainder being iron including unavoidable steel-accompanying elements resulting from the melting process, casting the steel melt into a preliminary material, in particular a slab or a block or a thin slab, hot rolling the preliminary material into a hot-rolled strip having a final rolling temperature in the range of 800 to 950 °C, cooling the hot-rolled strip to a winding temperature less than 650 °C, winding the hot-rolled strip at a winding temperature less than 650 °C, cooling the wound hot-rolled strip to room temperature in still air, wherein the microstructure of the wound hot-rolled strip then has a bainite fraction greater than 50% after the hot rolling, heating the hot-rolled strip to a temperature greater than 650 °C and less than Ac3, in particular less than Ac1 + 50 °C, cooling the hot-rolled strip to zinc bath temperature, hot-dip coating the heated hot-rolled strip in a zinc alloy molten bath containing (in weight percent): Al: 1.0 – 2.0, Mg: 1.0 – 2.0, the remainder being zinc and unavoidable impurities. The invention further relates to the hot-rolled strip produced in accordance with the method above and to shaped, dynamically highly loadable components, in particular motor vehicle parts, that are produced from said hot-rolled strip and that are resistant to corrosive and abrasive influences.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
The invention relates to an ultrahigh strength multiphase steel with a dual-phase microstructure or a complex-phase microstructure and with a low content of residual austenite in particular for lightweight vehicle construction, to a method for producing cold-rolled steel strips from such a steel, and to steel strips produced using said method. The aim of the invention is a novel alloy concept with which the processing window for the continuous annealing of cold strips can be extended. According to the invention, this is achieved by a multiphase steel with a minimum tensile strength of 980 MPa containing (contents in wt.%): C ≥ 0.075 to ≤ 0.115, Si ≥ 0.400 to ≤ 0.500, Mn ≥ 1.900 to ≤ 2.350, Cr ≥ 0.250 to ≤ 0.400, Al ≥ 0.005 to ≤ 0.060, N ≥ 0.0020 to ≤ 0.0120, S ≤ 0.0020, Nb ≥ 0.005 to ≤ 0.060, Ti ≥ 0.005 to ≤ 0.060, B ᡶ 0.0005 to ≤ 0.0010, Moᡶ 0.200 to ≤ 0.300, Ca ᡶ 0.0010 to ≤ 0.0060, Cu ≤ 0.050, Ni ≤ 0.050, and residual iron, including customary steel-accompanying smelting-related impurities, wherein the total content of Mn+Si+Cr is ≥ 2.500 to ≤ 3.250 with a view to a processing window which is as wide as possible during the annealing process, in particular during the continuous annealing process, of cold strips of said steel.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/32 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du bore
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C21D 9/52 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour fils métalliquesTraitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour bandes métalliques
C22C 38/40 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel
C22C 38/42 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cuivre
C22C 38/48 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 38/50 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
68.
DEFORMATION-HARDENED COMPONENT MADE OF GALVANIZED STEEL, PRODUCTION METHOD THEREFOR AND METHOD FOR PRODUCING A STEEL STRIP SUITABLE FOR THE DEFORMATION-HARDENING OF COMPONENTS
The invention relates to a deformation-hardened component made of galvanized steel, a method for producing a steel strip that is suitable for the deformation-hardening of components and a method for the production of a deformation-hardened component made of this steel strip. The deformation-hardened component made of galvanized steel, wherein first a plate is cut from a steel strip or steel sheet coated with zinc or a zinc-based alloy, subsequently heated to a deformation temperature above Ac3 and deformed and also hardened, having an at least partly martensitic transformation structure after having been shaped, wherein the steel has the following chemical composition in wt. %: C: 0.10 - 0.50, Si: 0.01 - 0.50, Mn: 0.50 - 2.50, P <0.02, S <0.01, N <0.01, Al: 0.015 - 0.100, B <0.004, remainder: iron, including inevitable melting and steel associated elements, having at least one element of the group Nb, V, Ti, wherein the sum of the Nb+V+Ti content is in a range of 0.01 to 0.20 wt. %, wherein the structure of the steel after the deformation hardening process has an average grain size of the former austenite grains of <15.
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/08 - Alliages ferreux, p. ex. aciers alliés contenant du nickel
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
The invention relates to a method for producing a hot or cold strip from a steel having an increased copper content, comprising the steps: melting a steel melt having the following chemical composition (in wt.%) C: up to 0.4, Mn: up to 3, AI: up to 2, Si: up to 2, Cu: more than 0.8, P: up to 0.2, S: up to 0.05 and N: up to 0.3, with optional addition of one or more of the elements Sn, Ni, Cr, V, Nb, Ti, Mo, W, B, Co, Sb and Zr, the remainder being iron including unavoidable steel-accompanying elements; casting the melt under an inertising or reducing or oxidising atmosphere, having an oxygen content of less than 10 vol.%, by means of a near-net-shape casting method, in particular horizontal strip casting or vertical casting according to the two-roll method, into a pre-strip having a thickness in the range between 1 mm and 30 mm, preferably 1 mm to 20 mm; cooling the cast pre-strip at a cooling rate of at least 100 K/s at the actively cooled strip surface until forming a rigid boundary layer, and further steps.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
B22D 11/00 - Coulée continue des métaux, c.-à-d. en longueur indéfinie
B22D 11/06 - Coulée continue des métaux, c.-à-d. en longueur indéfinie dans des moules dont les parois se déplacent, p. ex. entre des rouleaux, des plaques, des courroies, des chenilles
B22D 11/106 - Protection de l'écoulement du métal fondu
B22D 11/124 - Accessoires pour le traitement ultérieur ou le travail sur place des barres coulées pour le refroidissement
B22D 11/14 - Installations pour la coulée continue, p. ex. pour tirer la barre vers le haut
B22D 11/22 - Commande ou régulation des opérations ou du fonctionnement du refroidissement des barres coulées ou des moules
B22D 15/00 - Coulée utilisant un moule ou un noyau dont une partie importante, pour le procédé, est de conductibilité thermique élevée, p. ex. coulée contre refroidisseursMoules ou accessoires spécialement adaptés à cette technique
B22D 37/00 - Commande ou régulation de la coulée de métal liquide à partir d'un récipient de maintien d'un bain de fusion
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
HIGH-STRENGTH AIR-HARDENING MULTI-PHASE STEEL COMPRISING OUTSTANDING PROCESSING PROPERTIES AND METHOD FOR THE PRODUCTION OF A STEEL STRIP FROM SAID STEEL
The invention relates to a high-strength air-hardening multi-phase steel which has a minimum tensile strength of 750 MPa and has outstanding processing properties, consisting of a composition defined in claim 1, in which, with a view to a possibly broad process window in the continuous annealing of warm or cold strips from said steel, according to the produced strip thickness, the total content of Mn+Si+Cr+Mo is adjusted as follows: up to 1.00 mm, total of Mn+Si+Cr+Mo ≥ 2.450 and ≤ 2.800 weight %; over 1.00 up to 2.00 mm, total of Mn+Si+Cr+Mo ≥ 2.600 and ≤ 3.150 weight %; over 2.00 mm, total of Mn+Si+Cr+Mo ≥ 3.000 and ≤ 3.450 weight %.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/52 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour fils métalliquesTraitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour bandes métalliques
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/32 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du bore
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C22C 38/40 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel
C22C 38/42 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cuivre
C22C 38/48 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 38/50 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
C22C 38/54 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du bore
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
71.
HIGH-STRENGTH AIR-HARDENING MULTIPHASE STEEL HAVING EXCELLENT PROCESSING PROPERTIES, AND METHOD FOR MANUFACTURING A STRIP OF SAID STEEL
The invention relates to a high-strength air-hardenable multiphase steel which has excellent processing properties and consists of a composition defined in claim 1 and in which, in order to allow for a process window that is as large as possible for the continuous annealing of hot and cold strips from said steel, the combined content of Mn+Si+Cr is adjusted as follows in accordance with the strip thickness obtained: up to 1.00 mm: sum of Mn+Si+Cr ≥ 2.350 and ≤ 2.500 wt% more than 1.00 and up to 2.00 mm: sum of Mn+Si+Cr > 2.500 and ≤ 2.950 wt% more than 2.00 mm: sum of Mn+Si+Cr > 2.950 and ≤ 3.250 wt%.
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/32 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du bore
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
72.
ULTRA HIGH-STRENGTH AIR-HARDENING MULTIPHASE STEEL HAVING EXCELLENT PROCESSING PROPERTIES, AND METHOD FOR MANUFACTURING A STRIP OF SAID STEEL
The invention relates to a high-strength air-hardenable multiphase steel which has excellent processing properties and consists of a composition defined in claim 1 and in which, in order to allow for a process window that is as large as possible for the continuous annealing of hot and cold strips from said steel, the combined content of Mn+Si+Cr is adjusted as follows in accordance with the strip thickness obtained: up to 1.00 mm: sum of Mn+Si+Cr ≥ 2.800 and ≤ 3.000 wt%; more than 1.00 and up to 2.00 mm: sum of Mn+Si+Cr ≥ 2.850 and ≤ 3.100 wt%; more than 2.00 mm: sum of Mn+Si+Cr ≥ 2.900 and ≤ 3.200 wt%.
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/32 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du bore
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
73.
METHOD FOR PRODUCING A COMPONENT BY SUBJECTING A SHEET BAR OF STEEL TO A FORMING PROCESS
The invention relates to a method for producing a component by subjecting a sheet bar of steel to a forming process according to the preamble of patent claim 1, which makes it possible for cold-hardened mechanically separated edges of sheet to undergo forming and, independently of the forming into a component, at any desired point in time after the cutting to size of the sheet bar and any further stamping or cutting operations, the edges of sheet that have been cold-hardened by the cutting or punching operations and undergo subsequent cold working in the production of the component are heated to a temperature of at least 600°C, and the time of the temperature exposure is at most 10 seconds.
The invention relates to a steel product for protecting electrical components from mechanical damage and electrical short circuit resulting therefrom, produced from a lightweight steel comprising 6 to 30 wt% manganese, up to 12.0 wt% aluminum, up to 6.0 wt% silicon, 0.04 to 2.0 wt% carbon, and additionally one or more of the elements chromium, titanium, vanadium, niobium, boron, zirconium, molybdenum, nickel, copper, tungsten, cobalt at up to 5.0 wt% each and up to 10.0 wt% in total, the remainder iron, including common steel tramp elements, as hot-rolled strip or cold-rolled strip, sheet metal, or pipe, wherein the steel product is provided with an electrically non-conductive coating at least one side, on the side later facing the electrical components.
The invention relates to a method for calculating the combination of properties of phase components and of mechanical properties being established of a predefined alloy composition for a deformable lightweight steel having the elements in percent by weight C 0.02 to ≤ 1.0, Al 2.5 to ≤ 8.0, Si 0.0 to ≤ 1.5, Mn ≥ 5.0 to ≤ 35.0, Cr > 1.0 to ≤ 14.0, total content of N, S, P ≤ 0.1, the remainder iron and other steel-accompanying elements with some contents of Cu, Mo, Ni, and Zn of up to 1.0 wt% in total by using specific formulas on the basis of the manganese content, wherein, in the formulas, the alloy contents are used as absolute numbers without dimensions, and the calculated, dimensionless values are assigned the units MPa for Rm and Rp and % for A80. The invention further relates to a method for the further processing of a lightweight steel produced having a predefined alloy composition to form a hot-rolled strip.
B22D 11/06 - Coulée continue des métaux, c.-à-d. en longueur indéfinie dans des moules dont les parois se déplacent, p. ex. entre des rouleaux, des plaques, des courroies, des chenilles
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
76.
ZINC-BASED ANTI-CORROSION COATING FOR STEEL SHEETS, FOR PRODUCING A COMPONENT AT AN ELEVATED TEMPERATURE BY HOT FORMING DIE QUENCHING
The invention relates to a zinc-based anti-corrosion coating for steel sheets or steel strips, which for the purpose of hardening are at least in parts heated to a temperature above Ac3 and then cooled at a temperature situated at least partially above the critical cooling speed, the anti-corrosion coating being a coating applied by hot dipping. In addition to at least 75% by weight zinc and possible unavoidable impurities, the coating also contains 0.5 to 15.0 % by weight manganese and 0.1 to 10.0 % by weight aluminium.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C21D 9/48 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles tôles embouties
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C21D 1/68 - Revêtements temporaires ou matériaux d'enrobage appliqués avant ou pendant le traitement thermique
C23C 2/28 - Post-traitement thermique, p. ex. par traitement dans un bain d'huile
C21D 1/673 - Dispositifs pour trempe pour la trempe en coquille
77.
METHOD FOR PRODUCING STRIPS MADE OF STEEL, IN PARTICULAR FOR PRODUCING CUTTING AND MACHINING TOOLS HAVING IMPROVED SERVICE LIFE
The invention relates to a method for producing strips made of steel, in particular for producing cutting and machining tools having improved service life, wherein a preliminary strip is produced from a melt of a hardenable steel in a casting process and then rolled out into a hot-rolled strip and then, if necessary, annealed and cold rolled. The preliminary strip is produced in a horizontal strip casting system, wherein the melt is discharged from a feed vessel onto a cooled conveyor belt circulating over two deflecting rollers and is cast, with a killed flow and without bending, into a preliminary strip in the range between 6 and 40 mm, then rolled into hot-rolled strip having a degree of deformation of at least 50%, wherein the cooling rate on the top side and the bottom side of the preliminary strip is set differently for the purpose of residual solidification outside of the centre of the strip.
B22D 11/06 - Coulée continue des métaux, c.-à-d. en longueur indéfinie dans des moules dont les parois se déplacent, p. ex. entre des rouleaux, des plaques, des courroies, des chenilles
B22D 11/22 - Commande ou régulation des opérations ou du fonctionnement du refroidissement des barres coulées ou des moules
B21B 1/46 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilésSéquence des opérations dans les trains de laminoirsInstallation d'une usine de laminage, p. ex. groupement de cagesSuccession des passes ou des alternances de passes pour laminer du métal immédiatement après la coulée continue
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/18 - Alliages ferreux, p. ex. aciers alliés contenant du chrome
C22C 38/34 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de silicium
78.
MICRO-ALLOYED HIGH-STRENGTH MULTI-PHASE STEEL CONTAINING SILICON AND HAVING A MINIMUM TENSILE STRENGTH OF 750 MPA AND IMPROVED PROPERTIES AND METHOD FOR PRODUCING A STRIP FROM SAID STEEL
The invention relates to a high-strength multi-phase steel having minimum tensile strengths of 750 MPa and preferably having a dual-phase microstructure for a cold- or hot-rolled steel strip, in particular for lightweight vehicle construction, said high-strength multi-phase steel having improved forming properties and a ratio of yield point to tensile strength of at most 73%. The high-strength multi-phase steel consists of the elements specified in claim 1 (contents in mass %), the remainder iron, including typical elements accompanying steel that are not mentioned above, which represent contamination resulting from smelting.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/24 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du vanadium
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/32 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du bore
79.
METHOD FOR PRODUCING A COMPONENT BY HOT FORMING A PRE-PRODUCT MADE OF STEEL
The invention relates to a method for producing a component by hot forming a pre-product made of steel. The pre-product is heated to a forming temperature and is then reshaped, said component having a bainitic microstructure with a minimum tensile strength of 800 MPa after the forming process. In the process, the pre-product with the specified alloy composition is heated to a temperature below the Ac1 transformation temperature, said pre-product already consisting of a steel with a microstructure made of at least 50% bainite.
The invention relates to a method for producing components from an austenitic lightweight steel which is metastable in its initial state, by forming of a sheet, a circuit board or a pipe in one or more steps, exhibiting a temperature-dependent TRIP and/or TWIP effect during forming. To obtain a component with, in particular, high toughness, the forming is carried out at a temperature above room temperature, at 40 to 160°C, which avoids the TRIP/TWIP effect, and to achieve in particular high component strength, the forming is carried out at a temperature below room temperature, at -65 to 0°C, which enhances the TRIP/TWIP effect.
C21D 6/04 - Durcissement par refroidissement au-dessous de 0° C
C21D 7/02 - Modification des propriétés physiques du fer ou de l'acier par déformation par travail à froid
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
81.
METHOD FOR IMPROVING THE WELDABILITY OF HIGH-MANGANESE-CONTAINING STEEL STRIPS AND COATED STEEL STRIP
The invention relates to a method for improving the weldability of high-manganese-containing steel strips which contain (in % by weight) from 6 to 30% of manganese, up to 1% of carbon, up to 15% of aluminium, up to 6% of silicon, up to 6.5% of chromium, up to 4% of copper and also total additions of titanium and zirconium of up to 0.7% and total additions of niobium and vanadium of up to 0.5%, balance iron including unavoidable steel-accompanying elements and are coated with a zinc-containing corrosion protection layer.
C23C 28/02 - Revêtements uniquement de matériaux métalliques
C23C 30/00 - Revêtement avec des matériaux métalliques, caractérisé uniquement par la composition du matériau métallique, c.-à-d. non caractérisé par le procédé de revêtement
C25D 5/10 - Dépôt de plusieurs couches du même métal ou de métaux différents
The invention relates to a high-strength multiphase steel with minimum tensile strengths of 580 MPa, preferably a dual-phase structure for a cold-rolled or hot-rolled steel strip with improved forming properties, particularly for lightweight vehicle construction. The multiphase steel consists of the elements (contents in mass-%): C 0.075 to ≤ 0.105; Si 0.600 to ≤ 0.800; Mn 1.000 to ≤ 2.250; Cr 0.280 to ≤ 0.480; AI 0.010 to ≤ 0.060; P ≤ 0.020; N ≤ 0.0100; S ≤ 0.0150, remainder iron, including typical steel-accompanying elements not mentioned above, which are impurities introduced by smelting, with the condition that the Mn content is preferably ≤ 1.500% for strip thicknesses up to 1 mm, the Mn content is preferably ≤ 1.750% for strip thicknesses of 1 to 2 mm, and the Mn content is preferably ≥ 1.500% for strip thicknesses ≥ 2 mm.
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/18 - Alliages ferreux, p. ex. aciers alliés contenant du chrome
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
83.
METHOD FOR PRODUCING A COMPONENT FROM STEEL BY HOT FORMING
The invention relates to a method for producing a component from transformable steel by hot forming, in which a plate first is cut out of a strip or sheet as the pre-material, and is then heated to forming temperature and pre-formed, having an at least partially martensitic transformation structure after forming. Instead of a press mould hardening, the at least partially martensitic transformation structure is created in the pre-material, or in the plate to be formed, by austenitisation and quenching already before forming, and then the thus-conditioned plate is reheated after forming, while maintaining the at least partially martensitic transformation structure, to a temperature below the Ac1 transformation temperature, and formed at this temperature.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C21D 9/48 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles tôles embouties
The invention relates to a high-strength multi-phase steel having tensile strengths of no less than 580 MPa, preferably with a dual-phase structure for a cold-rolled or hot-rolled steel strip having improved forming properties, in particular for lightweight vehicle construction, consisting of the following elements (contents in % by mass): C 0.075 to ≤ 0.105; Si 0.200 to ≤ 0.300; Mn 1.000 to ≤ 2.000; Cr 0.280 to ≤ 0.480; Al 0.10 to ≤ 0.060; P ≤ 0.020; Nb ≥ 0.005 to ≤ 0.025; N ≤ 0.0100; S ≤ 0.0050; the remainder iron, including conventional steel-accompanying elements not mentioned above. The invention further relates to a method for producing a cold-rolled or hot-rolled steel strip from said steel.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C21D 1/18 - DurcissementTrempe avec ou sans revenu ultérieur
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/18 - Alliages ferreux, p. ex. aciers alliés contenant du chrome
85.
NON-SCALING HEAT-TREATABLE STEEL AND METHOD FOR PRODUCING A NON-SCALING COMPONENT FROM SAID STEEL
The invention relates to a non-scaling heat-treatable steel with particular suitability for producing hardened or die-hardened components, characterised by the following chemical composition in % by weight: C 0.04-0.50; Mn 0.5-6.0; Al 0.5-3.0; Si 0.05-3.0; Cr 0.05-3.0; Ni less than 3.0; Cu less than 3.0; Ti 0.010-≤0.050; B 0.0015-≤0.0040; P less than 0.10; S less than 0.05; N less than 0.020; remainder iron and unavoidable impurities. The invention further relates to a method for producing a non-scaling hardened component from the steel and a method for producing a hot strip from a steel.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
86.
HOT-ROLLED STRIP FOR MANUFACTURING AN ELECTRIC SHEET, AND PROCESS THEREFOR
The invention relates to a hot-rolled strip for manufacturing an electric sheet, consisting of the following alloy composition in wt%: C 0.001 to 0.08; Al 4.8 to 20; Si 0.05 to 10; B up to 0.1; Zr up to 0.1; Cr 01. to 4; the iron rest and contaminants caused by smelting.
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
C22C 38/18 - Alliages ferreux, p. ex. aciers alliés contenant du chrome
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/32 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du bore
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
87.
ULTRAHIGH-STRENGTH MULTIPHASE STEEL HAVING IMPROVED PROPERTIES DURING PRODUCTION AND PROCESSING
The invention relates to an ultrahigh-strength multiphase steel having a particular composition and also a process for producing a cold- or hot-rolled steel strip of this steel, in which the required multiphase microstructure is generated during continuous heat treatment. According to the invention, the cold- or hot-rolled steel strip is heated in the continuous heat treatment furnace to a temperature in the range from 700 to 950°C and the heat-treated steel strip is subsequently cooled from the heat treatment temperature at a cooling rate of from 15 to 100°C/s to a first intermediate temperature of from 300 to 500°C followed by cooling at a cooling rate of from 15 to 100°C/s to a second intermediate temperature of from 200 to 250°C; the steel strip is subsequently cooled at a cooling rate of from 2 to 30°C/s in air to room temperature or the cooling at a cooling rate of from 15 to 100°C/s is maintained from the first intermediate temperature to room temperature.
The invention relates to a welding additive for electric arc welding and laser beam welding of mixed joins composed of austenitic and high-manganese-containing and ferritic steel, where the high-manganese-containing steel has a manganese content of at least 7-30% by weight. Here, the welding additive consists of the following alloy elements in % by weight: C 0.04 - 1.0; Mn 7 - 30; Si ≤ 6; Al ≤ 4; Mo ≤ 2; Ti ≤ 0.5; Zr 0.01 - 01; B 0.001 - 0.01; P < 0.005; S < 0.002; N < 0.008; balance iron and unavoidable steel accompanying elements.
A blast furnace tuyere made of copper or a copper alloy with a metallic coating having high resistance to thermal corrosion and abrasion, wherein the coating of the blast furnace tuyere consists of a base layer made of silver or a silver-containing alloy with high silver content applied to the blast furnace tuyere and a cover layer applied to the base layer, consisting of a silver matrix with particles of a hard phase embedded therein.
C23C 4/02 - Pré-traitement du matériau à revêtir, p. ex. pour revêtement de parties déterminées de la surface
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
90.
METHOD FOR PRODUCING A COMPONENT BY HOT-FORMING A STEEL PRECURSOR PRODUCT
The invention relates to a method for producing a component by hot-forming a steel precursor product, wherein the precursor product is heated to forming temperature and is then formed. The invention is characterized in that the precursor product is heated to a temperature below the Ac1 conversion temperature and undergoes an increase in strength by cold forming prior to being heated.
C21D 7/02 - Modification des propriétés physiques du fer ou de l'acier par déformation par travail à froid
C21D 7/13 - Modification des propriétés physiques du fer ou de l'acier par déformation par travail à chaud
C21D 9/08 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour corps tubulaires ou tuyaux
C21D 9/48 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles tôles embouties
The invention relates to a process for producing a cast strip of steel with material properties which are adjustable over the strip cross section and the strip length, wherein a steel melt is charged via a melting vessel onto a circulating casting belt of a horizontal strip casting installation, is solidified to form a roughed strip and is optionally then subjected to a hot-rolling operation. Furthermore, the invention relates to a device for the horizontal strip casting of steel and to a hot strip. In this case, before the melt is charged onto the casting belt, a coating composition consisting of a carrier liquid with additives incorporated therein is applied to that side of the casting belt which comes into contact with the melt, and, before the melt is charged, said coating composition is dried and is then integrally combined with the charged melt.
B22D 11/00 - Coulée continue des métaux, c.-à-d. en longueur indéfinie
B22D 11/06 - Coulée continue des métaux, c.-à-d. en longueur indéfinie dans des moules dont les parois se déplacent, p. ex. entre des rouleaux, des plaques, des courroies, des chenilles
92.
HIGH STRENGTH MULTI-PHASE STEEL HAVING EXCELLENT FORMING PROPERTIES
The invention relates to a high strength multi-phase steel for a cold- or hot-rolled steel strip having excellent forming properties, in particular for light vehicle construction, comprising the elements (contents in mass%): C 0.060 to ≤ 0.115; Al 0.020 to ≤ 0.060; Si 0.100 to ≤ 0.500; Mn 1.300 to ≤ 2.500; P ≤ 0.025; S ≤ 0.0100; Cr 0.280 to ≤ 0.480; Mo < 0.150; Ti ≥ 0.005 to ≤ 0.050; Nb ≥ 0.005 to ≤ 0.050; B ≥ 0.0005 to ≤ 0.0060; N ≤ 0.0100; the remainder being iron including the usual elements present in steel and which are not mentioned above.
C21D 1/18 - DurcissementTrempe avec ou sans revenu ultérieur
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
93.
ENERGY-STORING CONTAINER MADE OF LIGHTWEIGHT STEEL
The invention relates to an energy-storing container. The container is made of a lightweight steel having the following chemical composition (in wt%): C 0.04 - 2%; Mn 14 - 30%; Al 1.5 - 12%; Si 0.3 - 3%; Cr 0.12 - 6%, and additionally one or more of the following elements: Ti, V, Nb, B, Zr, Mo, Ni, Cu, W, Co, P, N, each at up to 5% and in total at up to 10%, wherein the remainder is Fe including common steel tramp elements, wherein the concrete alloy composition is selected in order to limit the α'-martensite fraction before or after a forming process to no more than 3%, with the stipulation that the α'-martensite equivalent according to 0.1 * wt% Mn + wt% C + 0.05 * wt% Si is between 3.4 and 10.5.
The invention relates to a method for producing workpieces from an austenitic lightweight steel having material properties that can be adjusted over the wall thickness or strip thickness and having an alloy composition (in weight percent) comprising: C 0.2 to ≤ 1.0; Al 0.05 to < 15.0; Si 0.05 to ≤ 6.0; Mn 9.0 to < 30.0; remainder iron including common steel companion elements, with the optional addition of Cr, Cu, B, Ti, Zr, V, and Nb with Cr ≤ 6.5; Cu ≤ 4.0; Ti+Zr ≤ 0.7; Nb+V ≤ 0.5; B ≤ 0.1. The method according to the invention is characterized in that the workpiece is subjected to a particular decarburizing annealing treatment in an oxidizing atmosphere.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C21D 6/00 - Traitement thermique des alliages ferreux
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C21D 1/76 - Réglage de la composition de l'atmosphère
C21D 9/42 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour plaques de blindage
95.
PROCESS FOR COATING STEEL STRIPS AND COATED STEEL STRIP
The invention relates to a process for coating steel strips having the following base material composition (in % by weight): C 0.04 - 1.0; Mn 9.0 - 30.0; Al 0.05 - 15.0; Si 0.05 - 6.0; Cr ≤ 6.5; Cu ≤ 4.0; Ti+Zr ≤ 0.7; Nb+V ≤ 0.5, remainder iron including unavoidable steel-accompanying elements, in which process the steel strip is subjected to annealing and is then electrolytically coated with a coating formed from zinc or a zinc-containing alloy. Here, in the course of the annealing of the steel strip at temperatures of between 800 and 1000°C in an N2-H2-containing atmosphere, a nitride-enriched region is formed on the surface by reaction with the elements present in the steel and prevents the penetration of molten zinc into the base material during the welding of the coated steel strip.
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C21D 9/48 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles tôles embouties
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
96.
METHOD FOR PRODUCING A HOT-ROLLED STRIP BY MEANS OF STRIP CASTING, WHEREIN THE MATERIAL PROPERTIES CAN BE ADJUSTED OVER THE STRIP CROSS-SECTION
The invention relates to a method for producing hot-rolled strip made of steel and having material properties that can be adjusted over the strip cross-section, wherein a steel melt is output onto a circulating casting belt of a horizontal strip casting system by means of a gutter, wherein said steel melt solidifies to form a preliminary strip having a thickness of between 6 and 20 mm, and the preliminary strip is subjected to a hot rolling process after complete solidification. A gas jet or plasma jet composed of metal and/or non-metal elements that affect the material properties of the hot-rolled strip influences the steel melt that is still liquid and/or just at the start of solidification, wherein the concentration of the elements introduced into the melt by means of the gas jet or plasma jet and diffusing into the melt is adjusted over the strip thickness and strip width by changing the influencing kinetic energy of the partial gas pressure and/or the applied temperature.
B22D 11/06 - Coulée continue des métaux, c.-à-d. en longueur indéfinie dans des moules dont les parois se déplacent, p. ex. entre des rouleaux, des plaques, des courroies, des chenilles
B22D 11/106 - Protection de l'écoulement du métal fondu
B22D 11/117 - Affinage du métal en le traitant par des gaz
B22D 27/00 - Traitement du métal dans le moule pendant qu'il est liquide ou plastique
B22D 41/60 - Buses de coulée avec des moyens de chauffage ou de refroidissement
B22D 19/14 - Coulée dans, sur, ou autour d'objets formant partie intégrante du produit final les objets ayant la forme de filaments ou de particules
97.
METHOD FOR PRODUCING A COMPONENT FROM AN AIR-HARDENABLE STEEL AND COMPONENT PRODUCED THEREWITH
The invention relates to a method for producing a component of an air-hardenable steel. The steel is composed of the following elements (contents in mass %): C < 0.20; Al < 0.08; Si < 1.00; Mn 1.20 to < 2.50; P < 0.020; S < 0.015; N < 0.0150; Cr 0.30 to < 1.5; Mo 0.10 to < 0.80; Ti 0.010 to < 0.050; V 0.03 to < 0.20; B 0.0015 to < 0.0060; the remainder being iron including the usual elements present in steel. According to the invention, a hot- or cold-rolled sheet steel or steel pipe section is heated to a temperature of δblank = 800 to 1050 °C and is subsequently formed in a shaping tool into a component. After removal from the tool, it is cooled in air wherein, after the removal from the shaping tool, the component still has a temperature above δremoval = 200 °C and below 800 °C and achieves the required mechanical properties during the air-cooling process.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
98.
METHOD FOR PRODUCING A HOT ROLLED STRIP AND HOT ROLLED STRIP PRODUCED FROM FERRITIC STEEL
The invention relates to a method for producing a hot rolled strip from transformation-free ferritic steel, wherein a melt is cast into a preliminary strip and said strip is subsequently rolled into a hot rolled strip. For this purpose, it is provided that the melt is cast in a horizontal strip casting system into a preliminary strip in the range between 6 and 20 mm with a killed flow and free of bends and is subsequently rolled into hot rolled strip having a deformation of at least 50%.
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
B22D 11/06 - Coulée continue des métaux, c.-à-d. en longueur indéfinie dans des moules dont les parois se déplacent, p. ex. entre des rouleaux, des plaques, des courroies, des chenilles
C22C 38/18 - Alliages ferreux, p. ex. aciers alliés contenant du chrome
99.
METHOD FOR PRODUCING A HOT ROLLED STRIP AND HOT ROLLED STRIP PRODUCED FROM TRIPLEX LIGHTWEIGHT STEEL
The invention relates to a method for producing a hot rolled strip from triplex lightweight steel, wherein a melt is cast into a preliminary strip and said strip is subsequently rolled into a hot rolled strip. For this purpose, it is provided that the melt is cast in a horizontal strip casting system into a preliminary strip in the range between 6 and 20 mm with a killed flow and free of bends and is subsequently rolled into hot rolled strip having a deformation of at least 50%.
B22D 11/06 - Coulée continue des métaux, c.-à-d. en longueur indéfinie dans des moules dont les parois se déplacent, p. ex. entre des rouleaux, des plaques, des courroies, des chenilles
B21B 1/46 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilésSéquence des opérations dans les trains de laminoirsInstallation d'une usine de laminage, p. ex. groupement de cagesSuccession des passes ou des alternances de passes pour laminer du métal immédiatement après la coulée continue
100.
CASTING NOZZLE FOR A HORIZONTAL CONTINUOUS CASTING SYSTEM
The invention relates to a casting nozzle for a horizontal continuous casting system, in particular for casting steel strip, wherein the nozzle is designed as a narrow rectangular hollow block having a bottom, top and two side walls and made of fire-proof material, the outflow region being located only little above a cooled continuous strip receiving the outflowing melt. Viewed in the flow direction, it is provided that the clear cross-section of the hollow block in the outflow region reduces uniformly in the direction toward the outflow and the face of the bottom of the hollow block is designed with respect to the surface of the continuous strip such that the melt comes in contact with the continuous strip perpendicularly.
B22D 11/06 - Coulée continue des métaux, c.-à-d. en longueur indéfinie dans des moules dont les parois se déplacent, p. ex. entre des rouleaux, des plaques, des courroies, des chenilles