Provided is a straight polarity MAG-welding technology capable of not only reducing spatter generation, but also achieving an excellent bead shape when preforming MAG welding. The technology involves a welding wire for use in straight polarity MAG welding; this welding wire has a composition containing: in mass %, C: 0.020 to 0.080%, Si: 0.50 to 0.97%, Mn: 1.50 to 2.00%, P: 0.001 to 0.050%, S: 0.001 to 0.025%, Ti: 0.10 to 0.30%, Al: 0.010 to 0.050%, Cr: 0.05 to 0.20%, Ni: 0.01 to 0.10%, Mo: 0.05 to 0.30%, Ca: 0.0016% or less, REM: 0.020 to 0.055%, B: 0.0005 to 0.0030%, N: 0.0100% or less, and a balance consisting of Fe and inevitable impurities. If necessary, the composition may further contain at least one selected from, in mass %, Nb: 0.050% or less, V: 0.050% or less, Zr: 0.300% or less, and K: 0.0150% or less.
B23K 35/30 - Emploi de matériaux spécifiés pour le soudage ou le brasage dont le principal constituant fond à moins de 1550 C
B23K 9/173 - Soudage ou découpage à l'arc utilisant des gaz de protection et une électrode consommable
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
2.
FERRITIC STAINLESS STEEL FOR SOLID OXIDE ELECTROCHEMICAL CELLS
Provided is a stainless steel having excellent oxidation resistance, Cr poisoning resistance, and electric conductivity, not only in use environments for SOFCs but also in use environments for SOECs. In the present invention, the composition of components is appropriately controlled, and, in particular, is set to contain 0.60-1.50 mass% of Al, 0.20-0.45 mass% of Nb, 20.0-30.0 mass% of Cr, and 0.05-0.50 mass% of Si, and to satisfy the relationships of formulae (1) and (2). (1): 0.03 × [Cr] + [Al] ≤ 2.20 (2): 0.44 × [Si] + [Al] ≤ 1.52
Provided is a technology capable of sorting and taking out scrap and transporting the scrap to another location. This scrap transport device selects and transports a scrap group (1) composed of a plurality of pieces of scrap (2), the scrap transport device comprising: an imaging device (3) that images the scrap group (1); an image analysis unit (4) that, when considering a collection of one or more pieces of scrap (2) present in a region among one or more regions located in the scrap group (1) as detected scrap, analyzes the captured image captured by the imaging device (3) and estimates scrap information that includes sorting information that specifies the location of the detected scrap and the content of the pieces of scrap (2) that constitute the detected scrap; a selection calculation unit (5) that refers to the estimated selection information and selects the detected scrap that satisfies a preset selection condition; and a transfer device (6) that takes out and transports the pieces of scrap (2) from the region in which the detected scrap selected by the selection calculation unit (5) is located.
The purpose of the present invention is to provide: a steel sheet having excellent ductility and expansion formability, and having a yield strength (YP) of 450 MPa or more; and a method for manufacturing the same. The steel sheet has a component composition containing 0.05-0.13 mass% C, 0.01-0.04 mass% Si, 0.1-0.6 mass% Mn, 0.02 mass% or less P, 0.02 mass% or less S, 0.01-0.10 mass% Al, 0.0005-0.0040 mass% N, 0.005-0.030 mass% Ti, 0.005-0.030 mass% Nb, 0.01-0.05 mas % Mo, and 0.0005-0.0050 mass% B, the remainder consisting of iron and unavoidable impurities. The steel sheet has a ferrite structure having an area ratio of 90% or more as a microstructure, and the total amount of Ti and Nb present as a carbonitride in all of the Ti and Nb is 0.005 mass% or more.
Provided are a foreign matter separation system, a foreign matter separation method, a program, and a computer-readable recording medium storing a program, capable of reducing the amount of scrap that is removed together with foreign matter in a scrap group. A foreign matter separation system (1) comprises: a conveyance device (20) that lifts and conveys a part of a scrap group (SS); a conveyance scrap foreign matter detection means (30) for detecting foreign matter (D) in the scrap group (SS) lifted by the conveyance device (20); and a control device (40) that, when the foreign matter (D) in the lifted scrap group (SS) is detected by the conveyance scrap foreign matter detection means (30), specifies the position of the foreign matter in the lifted scrap group (SS), and controls the conveyance device (20) so as to cause the scrap (S) and the foreign matter (D) in the lifted scrap group (SS) to fall to different locations on the basis of the specified position of the foreign matter (D).
The objective of the present invention is to provide a seed-coating agent, coated seeds and a seed-coating method that enable to shorten the operation time for forming a coating layer by promoting rusting in a seed-coating technique using an iron-based powder. More specifically, the seed-coating agent contains an iron-based powder used for coating a seed surface, wherein the iron-based powder contains 0.6 mass % or more and 15 mass % or less of Si, and 25 mass % or more of an iron powder relative to the seed-coating agent. Furthermore, coated seeds are obtained by coating the surface of the seeds with the seed-coating agent.
A foreign matter detection device (10) for detecting foreign matter contained in scrap, said device comprising: an image acquisition unit (131) for acquiring images captured by a camera that moves so as to follow a work unit performing prescribed work on the scrap and captures images of the surroundings of the work unit; and a determination unit (132) for detecting candidates for the foreign matter on the basis of the images and determining the presence/absence of foreign matter on the basis of detection results for the candidates for the foreign matter.
This method for testing metal plate shearing includes: a process (P1) in which the forming of a sheared end section 103 of a shearing material 101 is reproduced by shearing a test piece 121; and a process (P3) in which the residual stress distribution on a sheared-end-section-side surface 127 of the sheared end section 123 formed by shearing the test piece 121 is calculated. A strain history and a spin history of the sheared-end-section-side surface 127 during deformation of the sheared end section 123 by the shearing of the test piece 121 are acquired (S10), stress on the sheared-end-section-side surface 127 is successively updated and calculated from the start of deformation to the end of deformation of the sheared end section 123 (S20), and a residual stress distribution on the sheared-end-section-side surface 127 at the end of deformation is calculated (S30).
The present invention provides an Ni brazing material which exhibits excellent corrosion resistance in a brazed part, while having excellent brazability. This Ni brazing material has a component composition that contains, by mass%, 8.0-25.0% of Cr, 3.0-20.0% of Fe, 2.0-7.0% of Mo, 1.50-5.00% of B, and 0.10-1.00% C, with the balance being made up of Ni and inevitable impurities, while satisfying formula (1). (1): 2.00 ≤ B + C ≤ 5.50 In formula (1), B and C indicate the content (mass%) of each element.
B23K 35/30 - Emploi de matériaux spécifiés pour le soudage ou le brasage dont le principal constituant fond à moins de 1550 C
C22C 19/03 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel
C22F 1/00 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid
C22F 1/10 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid du nickel ou du cobalt ou de leurs alliages
Provided is a looper installation capable of inhibiting a defect of a steel sheet even when meandering occurs to an extent that the steel sheet comes into contact with the looper installation. A looper installation according to the present invention comprises: a plurality of conveyance rolls; at least one fixed roll; a frame; at least one looper car; and at least one pair of vertical rolls provided at a specific position.
B21C 49/00 - Dispositifs pour accumuler temporairement les matériaux
B21B 45/02 - Dispositifs pour le traitement de surface des pièces spécialement combinés aux laminoirs, disposés dans les laminoirs, ou adaptés pour être utilisés avec les laminoirs pour lubrifier, refroidir ou nettoyer
The present invention provides a steel component which is free from slab cracking during continuous casting and is excellent in terms of wear resistance and surface properties. This steel component having a predetermined component composition, wherein: the number density of cementite particles having a particle diameter of 0.090 μm or more is 200,000 particles/mm2 or more; and the Cr amount in the cementite particles having a particle diameter of 0.090 μm or more is 2.5 mass% or more.
An automotive body side structure includes collision energy absorptive parts provided on the outer peripheral side of a battery pack in a vehicle width direction in a protruding shape toward a vehicle outside in the vehicle width direction, and a recessed portion formed in the side sill to secure a space between the collision energy absorptive parts and the side sill. When a collision load is input to the side portion of the side sill, the timing at which the side sill and the collision energy absorptive parts contact each other is delayed, the collision load input to the side sill is transferred to the floor cross member until the side sill contacts the collision energy absorptive parts, after the side sill and the collision energy absorptive parts contact each other, the collision energy absorptive parts absorb the collision energy to reduce a load transferred to the battery pack.
B60K 1/04 - Agencement ou montage des ensembles de propulsion électriques des dispositifs d'emmagasinage de l'énergie électrique pour la propulsion
B62D 21/02 - Châssis, c.-à-d. armature sur laquelle une carrosserie peut être montée comprenant des éléments d'armature disposés longitudinalement ou transversalement
B62D 21/15 - Châssis, c.-à-d. armature sur laquelle une carrosserie peut être montée comportant des moyens amortisseurs de chocs, p. ex. châssis conçus pour changer de forme ou de dimensions d'une façon définitive ou temporaire à la suite d'une collision avec un autre corps
A method of manufacturing a grain-oriented electrical steel sheet includes sequentially subjecting a slab for grain-oriented electrical steel sheet to hot rolling, cold rolling, decarburization annealing, final annealing after applying an annealing separator to a surface of the steel sheet, and flattening annealing. After the cold rolling and before the applying of an annealing separator, resist ink is applied to one side of the steel sheet. A laser is repeatedly scanned across a rolling direction of the steel sheet on the applied surface to remove resist ink. Electrolytic etching is applied on the removed areas to form grooves that extend linearly across the rolling direction and are lined up at intervals in the rolling direction. The scanning of the laser is performed with an irradiation energy of the laser being less than 30 J/m and a temperature of the steel sheet being 40° C. to 200° C.
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
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
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
A high strength steel plate having excellent ammonia SCC resistance and low-temperature toughness for use in storage tanks and the like used to contain liquefied gas in energy transport ships. The steel plate has a defined chemical composition and has hardness properties such that, at a 0.5 mm depth position from the surface of the steel plate, average hardness is 210 HV or less and variation of the average hardness is 50 HV or less, and a metallic microstructure where, at a 0.5 mm depth position from the surface of the steel plate, a volume fraction of bainitic microstructure is 90% or more and, at a ½ thickness position of the steel plate, a volume fraction of bainitic microstructure is 20% or more and a total volume fraction of ferritic microstructure and bainitic microstructure is 60% or more.
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 38/00 - 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
15.
FOREIGN MATTER SEPARATION SYSTEM, FOREIGN MATTER SEPARATION METHOD, PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM STORING PROGRAM
Provided is a foreign matter separation system, for example, capable of reducing scrap which is removed together with foreign matter in a scrap group by automatically removing the foreign matter contained in the scrap group. A control device (30) in a foreign matter separation system (1) identifies position information of foreign matter (D) in a scrap group (SS) and identification information of the foreign matter (D) when the foreign matter (D) in the scrap group (SS) is detected from a captured image (G) captured by an imaging device (10), sets a movement condition of a conveyance device (20) on the basis of the identified position information of the foreign matter (D), and sets a condition for conveying the foreign matter (D) by the conveyance device (20) on the basis of the identification information of the identified foreign matter (D). The control device (30) controls the conveyance device (20) so that the conveyance device (20) moves under the movement condition of the conveyance device (20) and so that the conveyance device (20) lifts up and conveys the placed foreign matter (D) to a foreign matter placement location (52) under the condition for conveying the foreign matter (D) by the conveyance device (20).
This grinding system comprises: a shape measurement device for measuring the three-dimensional shape and orientation of a material to be ground; a detection device for detecting the position and shape of a grinding target part on the surface of the material to be ground; a grinding device (6) having a grinding tool for grinding the grinding target part; a movement mechanism for moving the material to be ground relative to the shape measurement device and the grinding device; a grinding tool control device (5) that, on the basis of the three-dimensional shape and orientation of the material to be ground measured by the shape measurement device and the position and shape of the grinding target part detected by the detection device, generates a trajectory of the grinding tool for grinding the grinding target part, and controls the grinding device so that the grinding tool moves along the trajectory; and a movement mechanism control device (12) that controls the movement mechanism so that the material to be ground moves relative to the shape measurement device and the grinding device during measurement of the material to be ground by the shape measurement device and during the grinding of the grinding target part by the grinding tool.
B24B 49/12 - Appareillage de mesure ou de calibrage pour la commande du mouvement d'avance de l'outil de meulage ou de la pièce à meulerAgencements de l'appareillage d'indication ou de mesure, p. ex. pour indiquer le début de l'opération de meulage impliquant des dispositifs optiques
B24B 5/18 - Machines ou dispositifs pour meuler des surfaces de révolution des pièces, y compris ceux qui meulent également des surfaces planes adjacentesAccessoires à cet effet possédant des moyens "sans centre" pour supporter, guider, soutenir ou mettre en rotation la pièce
H01L 21/304 - Traitement mécanique, p. ex. meulage, polissage, coupe
17.
SEED-COATING AGENT, COATED SEEDS AND SEED-COATING METHOD
The objective of the present invention is to provide a seed-coating agent made of an iron-based powder, enabling easy determination of a coating state even outdoors, and enabling satisfactory coating through rusting. Also provided are coated seeds coated with the seed-coating agent, and a seed-coating method using the seed-coating agent. More specifically, the seed-coating agent contains an iron-based powder used for coating a seed surface, wherein the seed-coating agent contains a carbon powder having a specific surface area of 900 m2/g or less, and the amount of carbon in the seed-coating agent is 0.6 mass % or more and 21.0 mass % or less relative to the iron-based powder.
Provided is an electric-resistance-welded steel pipe having excellent corrosion resistance. The electric-resistance-welded steel pipe comprises a base and an electric-resistance-welded joint by which one end of the base and the other end of the base are connected to each other. The base and the electric-resistance-welded joint of the electric-resistance-welded steel pipe contain at least one of Cr, Mo, and Cu. The concentrations of Cr, Mo, and Cu in the base and the concentrations of Cr, Mo, and Cu in the electric-resistance-welded joint satisfy a given relationship. The electric-resistance-welded steel pipe of the present invention has excellent corrosion resistance.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
B21C 37/08 - Fabrication de tubes à joints soudés ou brasés
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 38/38 - 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
19.
COLD-ROLLED STEEL SHEET AND METHOD FOR MANUFACTURING SAME
According to the present invention, a cold-rolled steel sheet containing carbon at a high content ratio of 0.80 to 1.25 mass% achieves both excellent machinability and excellent punching workability. Disclosed is a cold-rolled steel sheet which has a specific component composition, wherein: the average particle diameter of cementite particles having an area of 0.06 μm2or more is 0.65 μm or less; the A value is 2.0 mass% or more; the number density of voids having an area of 0.01 μm2or more is 50,000 voids/mm2 or more; and the Vickers hardness is 200 HV to 400 HV inclusive.
A steel continuous casting method effectively reducing center segregation occurring inside a cast piece includes cooling of a cast piece performed with a water volume density per surface area of the cast piece in a first section set within a range of 50 to 2000 L/(m2×min) or lower. The first section is a range along a cast piece withdrawing direction in a continuous casting machine, from a start point at which an average value of a solid phase ratio along a thickness direction at a final solidified part in a cast piece width direction is 0.8 or lower to an end point at which the average value of the solid phase ratio along the thickness direction at the final solidified part in the cast piece width direction is higher than the solid phase ratio at the start point but not higher than 1.0.
Provided are: a method for manufacturing an oriented electromagnetic steel sheet, the method being capable of significantly improving manufacturability; and a facility capable of realizing the same. This method for manufacturing an oriented electromagnetic steel sheet involves a series of steps of: hot-rolling a steel slab having a predetermined component composition; then annealing the hot-rolled sheet; performing cold rolling once or at least twice so that the total rolling reduction from the thickness of the obtained hot-rolled sheet to the thickness of a product after the cold rolling is at least 80%; performing primary recrystallization annealing; subsequently, applying an annealing separation agent onto the surface of the steel sheet; and then performing final finish annealing and flattening annealing for flattening, wherein the occupancy rate of carbides at crystal grain boundaries of recrystallized grains in the hot-rolled sheet before the cold rolling and after the annealing of the hot-rolled sheet is set to at least 80%, and then the first reduction in the cold rolling is performed under the conditions in which the strain rate is at most 200/sec, the rolling reduction is at most 30%, and the steel sheet temperature when biting into a roll is at most 90ºC.
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 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du 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
H01F 1/147 - Alliages caractérisés par leur composition
22.
HALBACH ARRAY MAGNET, ELECTROMAGNETIC ULTRASONIC SENSOR, DEFECT MEASUREMENT APPARATUS, DEFECT MEASUREMENT METHOD, METAL MATERIAL MANUFACTURING METHOD, METAL MATERIAL QUALITY CONTROL METHOD, METAL MATERIAL MANUFACTURING FACILITY, SOLIDIFICATION POSITION MEASUREMENT APPARATUS, SOLIDIFICATION POSITION MEASUREMENT METHOD, AND CASTING FACILITY
A Halbach array magnet includes: a magnet unit in which a plurality of magnets is arranged in a Halbach array; a fixing jig that is one or a plurality of non-magnetic materials, the fixing jig being configured to at least fix each of the magnets of the magnet unit; and a yoke that is a magnetic material and is provided on a different side of biased magnetic field formed by the magnet unit.
Provided is a way to inhibit propagation of edge cracks. A method of producing a grain-oriented electrical steel sheet including, before final annealing, local strain with an indentation amount from the steel sheet surface of 5 μm to 30 μm is applied to a linear region that, when coiled and the coil is charged into a final annealing furnace, is separated from the axial end of the coil that comes into contact with a coil receiving base of the final annealing furnace by 5 mm or more and 20 mm or less in the axial direction of the coil and that extends continuously or discontinuously in a direction on that intersects the axial direction, in order to produce crystal grains having a misorientation angle of 15° or more from Goss orientation grains along 50% or more of the total length of the linear region.
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
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
24.
NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR PRODUCING THE SAME
A non-oriented electrical steel sheet as a steel material from which both a rotor core material having excellent fatigue properties and a stator core material having excellent magnetic properties after core annealing is performed can be obtained. The steel sheet is produced by hot-rolling a steel material including predetermined amounts of C, Si, Mn, and Al, followed by hot-band annealing, cold rolling, and cold-band annealing.
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C21D 1/30 - Recuit d'homogénéisation pour détruire les tensions internes
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
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 38/00 - 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 38/08 - Alliages ferreux, p. ex. aciers alliés contenant du nickel
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 38/34 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de silicium
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
H01F 1/147 - Alliages caractérisés par leur composition
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateursAppareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
H02K 1/02 - Détails du circuit magnétique caractérisés par le matériau magnétique
25.
METHOD FOR MANUFACTURING GRAIN-ORIENTED ELECTRICAL STEEL SHEET, AND GRAIN-ORIENTED ELECTRICAL STEEL SHEET
This disclosure discloses a method for manufacturing a grain-oriented electrical steel sheet and a grain-oriented electrical steel sheet manufactured by the method. The method comprises heating a slab having a predetermined composition by induction heating in a frequency range of 20 to 1000 Hz under predetermined conditions, where the average current flowing in the coil is monotonically decreased as time passes during slab heating; subjecting the slab to finish rolling performed with the rolling finish temperature set to 950° C. or lower at one or both of the leading or trailing end; soaking the hot-rolled sheet at 750° C. or higher for 5 to 90 seconds to obtain a hot band annealed sheet; then cold rolling the annealed sheet once, or twice or more with intermediate annealing performed therebetween to obtain a cold-rolled sheet having a final sheet thickness; and subjecting the cold-rolled sheet to primary and secondary recrystallization annealings.
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C21D 6/00 - Traitement thermique des alliages ferreux
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
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 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
To provide MnZnCo—based ferrite with small magnetic losses over a wide frequency range and a wide temperature range. Disclosed is MnZnCo—based ferrite containing basic components and auxiliary components, in which the basic components are Fe2O3: 51.00 mol % or more and less than 58.00 mol %, ZnO:6.00 mol % or more and less than 13.00 mol %, and CoO:more than 0.10 mol % and 0.50 mol % or less, with the balance being MnO, and the auxiliary components are 50 mass ppm to 500 mass ppm of Si in terms of SiO2, 200 mass ppm to 2000 mass ppm of Ca in terms of CaO, 85 mass ppm to 500 mass ppm of Nb in terms of Nb2O5, and 5 mass ppm to 20 mass ppm of K, relative to the basic components.
C04B 35/26 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base d'oxydes à base de ferrites
H01F 1/34 - 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 substances non métalliques, p. ex. ferrites
27.
METHOD FOR PRODUCING MANGANESE CARBIDE AND METHOD FOR PRODUCING MANGANESE-CONTAINING STEEL
2mm. It is preferable to adjust the grain diameter of the manganese ore to 3-100 mm, to treat the manganese ore in a rotary kiln, and to supply the hydrocarbon gas from a position where the temperature inside the rotary kiln is 700°C or higher. The present invention is also a method for producing manganese-containing steel, the method including a step for adding the obtained manganese carbide to molten steel.
There is provided a high-strength steel sheet having a tensile strength of 1180 MPa or more. The high-strength steel sheet having a component composition containing C: 0.090 mass % or more and 0.390 mass % or less, Si: 0.01 mass % or more and 2.00 mass % or less, Mn: 2.00 mass % or more and 4.00 mass % or less, P: 0.100 mass % or less, S: 0.0200 mass % or less, Al: 1.000 mass % or less, N: 0.0100 mass % or less, and O: 0.0100 mass % or less, with a remaining part consisting of Fe and inevitable impurities; and a microstructure. In the microstructure, an area ratio of martensite is 70% or more, an area ratio of ferrite is 10% or less, an area ratio of retained austenite is 10% or less, and a proportion of the number of martensite blocks in which metastable carbides are present to the number of martensite blocks is 2% or more.
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
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 38/08 - 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 38/32 - 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 38/60 - 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
29.
STAINLESS STEEL POWDER, STAINLESS STEEL MEMBER AND METHOD FOR MANUFACTURING STAINLESS STEEL MEMBER
A stainless steel powder is provided. The stainless steel powder has a chemical composition including, in % by mass: C: 0.20% or less; Si: 2.0% or less; Mn: 2.0% or less; P: 0.040% or less; S: 0.010% or less; Cr: 18.0 to 35.0%; Ni: 1.0% or less; Cu: 0.50 to 4.0%; Nb: 0.7 to 3.0%; Mo: 6.0% or less; W: 6.0% or less; N: 0.030% or less; and O: 0.10% or less, the balance being Fe and incidental impurities, and the composition satisfying the following inequality (1): (Mo+W)≥2.0 (1) where Mo and W represent the contents (% by mass) of Mo and W, respectively.
A wound core 10 is configured by winding a grain-oriented electrical steel sheet 11 in a rolling direction. The wound core 10 has a width of a shear region of 100-400 μm in a region on the outer peripheral side of the wound core 10 from the center of the thickness of the grain-oriented electrical steel sheet 11 in a cross-section parallel to the rolling direction at bent portions of corner sections 12 of the wound core 10.
A wound core 10 is configured such that a grain-oriented electromagnetic steel sheet 11 is wound in the rolling direction. The wound core 10 has, in a cross section thereof parallel to the rolling direction at a bent portion of a corner part 12, KR of 1.05-1.6 as defined by the formula KR=Kin/Kout, where the average value of KAM values in the region between the outer peripheral side of the wound core 10 and the center of the plate thickness of the grain-oriented electromagnetic steel sheet 11 is defined as Kout, and the average value of KAM values in the region between the inner peripheral side of the wound core 10 and the center of the plate thickness of the grain-oriented electromagnetic steel sheet 11 is defined as Kin.
Provided is an alloyed hot-dip galvanized steel sheet comprising a steel sheet and an alloyed hot-dip galvanized layer and having a tensile strength of 980 MPa or more and excellent ductility and microcrack resistance. In the component composition of the steel sheet, the carbon equivalent Ceq is 0.520 to less than 0.700, and the total Nb and Ti content is 0.010-0.080 mass%. At a position at 1/4 of the thickness of the steel sheet, the martensite area ratio is more than 30% to 70%. In a region from the surface of the steel sheet to a depth of 20 μm, the martensite area ratio is more than 30% to 70%, the prior austenite grain size when the martensite area ratio is 50% or more is 3.0 μm or less, the total Nb and Ti content in precipitate having a size of 100 nm or less is 50 mass ppm or more, and the total Nb and Ti content in precipitate having a size greater than 100 nm is 350 mass ppm or less. In a region from the surface of the steel sheet to a depth of 1 μm, the sizes of the long sides of Si and Mn oxides present on the crystal grain boundary are 200 nm or less.
C23C 2/28 - Post-traitement thermique, p. ex. par traitement dans un bain d'huile
33.
DECARBURIZATION TREATMENT END DETERMINATION METHOD, DECARBURIZATION TREATMENT END DETERMINATION DEVICE, VACUUM DEGASSING TREATMENT OPERATION METHOD, AND MOLTEN STEEL PRODUCTION METHOD
This decarburization treatment end determination method includes: molten steel carbon concentration estimation steps (S3, S4) for estimating the carbon concentration of molten steel; and a decarburization treatment end determination step (S5) for determining the end of a decarburization treatment when the estimated carbon concentration is equal to or less than a target value. In the molten steel carbon concentration estimation steps, the decarburization treatment is divided into a plurality of stages, and the carbon concentration is estimated by using a different molten steel carbon concentration estimation model in each stage. The molten steel carbon concentration estimation model for the final stage expresses the decarburization reaction rate as a differential equation having a term that is proportional to the product of the decarburization reaction capacity coefficient ak and the linear expression of the molten steel carbon concentration Cv of a portion of the molten steel, said portion having been placed under a reduced pressure environment. The decarburization reaction capacity coefficient ak is determined to be a linear expression of the logarithm of the pressure P in a vacuum tank.
A method for manufacturing a carbonaceous material-containing agglomerate ore and a method for manufacturing molten pig iron, with which a highly-reducible raw material can be obtained, and the amount of a reducing material used when manufacturing molten pig iron in a countercurrent moving bed can be reduced. The method for manufacturing a carbonaceous material-containing agglomerate ore includes: a step of collecting carbon by bringing a carbon-containing gas that contains carbon monoxide into contact with a porous material; and an agglomeration step of performing agglomeration by mixing a carbon-containing raw material that contains the carbon collected into an iron-containing raw material.
A side sill structure 1 according to the present invention has: an impact absorption structure 20 which is disposed in a side sill 10 thereof, has a vehicle interior-side width-directional end 20a connected to a vertical surface 11a of a side sill inner 11, and absorbs an impact applied to the side sill 10 during a lateral collision of a vehicle; and a recess 30 which is provided to the vertical surface 11a of the side sill inner 11 and which restrains the vehicle interior-side end 20a in the vehicle vertical direction. The impact absorption structure 20 is provided with a pair of waveform components 21, 23 that are disposed in the vehicle vertical direction and that have a wave shape in which projections and recesses are continuously alternated in the vehicle longitudinal direction. Recesses 21b of an upper waveform component 21 and recesses 23b of a lower waveform component 23 are arranged facing each other and are joined together such that the facing recesses 21b, 23b are positioned out of alignment with each other in the vehicle longitudinal direction.
This pipe surface inspecting device, for inspecting an inner surface of a pipe as an inspection target region, comprises an imaging unit which includes an imaging element having a visual field on the surface of the inner surface, and two distinguishable light sources, and which is disposed on an axis of the pipe such that the imaging element is sandwiched between the two distinguishable light sources, a processing unit which acquires images obtained by imaging reflected light from each light source, generates a differential image of the two acquired images, and detects a surface defect in the inspection target region from the generated differential image, and a scanning unit for causing the imaging unit to scan in the axial direction of the pipe, wherein the two distinguishable light sources emit illuminating light onto the same prescribed inspection target region, and the imaging element captures images of the prescribed inspection target region.
G01N 21/954 - Inspection de la surface intérieure de corps creux, p. ex. d'alésages
G01N 21/84 - Systèmes spécialement adaptés à des applications particulières
37.
LIGHT SOURCE FOR SIMULATING MOLTEN METAL LEAKAGE, METHOD FOR SIMULATING MOLTEN METAL LEAKAGE, METHOD FOR CONFIRMING OPERATION OF MOLTEN METAL LEAKAGE DETECTION DEVICE, AND METHOD FOR SETTING MOLTEN METAL LEAKAGE DETECTION DEVICE
Provided is a light source for simulating molten metal leakage that allows easy simulation of molten metal leakage such as breakouts from facilities handling molten metal. The light source for simulating molten metal leakage used for simulating molten metal leakage from facilities handling molten metal has a light emitting unit capable of adjusting the coordinates of the color space of light to be emitted.
Provided is a molten metal leakage detection device capable of suppressing erroneous detection of molten metal leakage. This molten metal leakage detection device for detecting leakage of molten metal from molten metal handling equipment includes: an imaging unit for imaging the molten metal handling equipment at predetermined time intervals to generate image data; a data acquisition unit for acquiring time series data of the number of pixels indicating a specific color included in a prescribed region of the image data; and a detection unit for using the time series data to detect that the molten metal has leaked.
Provided is an alloyed hot-dip galvanized steel sheet comprising a steel sheet and an alloyed hot-dip galvanized layer and having a tensile strength of 590 MPa or more and excellent ductility and microcrack resistance. In the component composition of the steel sheet, the carbon equivalent Ceq is 0.370 to less than 0.520, and the total Nb and Ti content is 0.010-0.080 mass%. At a position at 1/4 of the thickness of the steel sheet, the martensite area ratio is 5-30%. In a region from the surface of the steel sheet to a depth of 20 μm, the martensite area ratio is 5-30%, the prior austenite grain size when the martensite area ratio is 50% or more is 3.0 μm or less, the total Nb and Ti content in precipitate having a size of 100 nm or less is 50 mass ppm or more, and the total Nb and Ti content in precipitate having a size greater than 100 nm is 350 mass ppm or less. In a region from the surface of the steel sheet to a depth of 1 μm, the sizes of the long sides of Si and Mn oxides present on the crystal grain boundary are 200 nm or less.
Provided is a method for separating and recovering carbon dioxide, the method making it possible to separate and recover carbon dioxide obtained by removing hydrogen sulfide and carbonyl sulfide from a raw-material gas containing the carbon dioxide, the hydrogen sulfide, and the carbonyl sulfide. This method for separating and recovering carbon dioxide from a raw-material gas G01 containing carbon dioxide, hydrogen sulfide, and carbonyl sulfide by using a pressure swing adsorption method includes a dehumidification step for removing moisture in the raw-material gas G01 to form a dehumidified raw-material gas, and a carbon dioxide recovery step for separating and recovering the carbon dioxide gas from the dehumidified raw-material gas by using a pressure swing adsorption method, wherein the method also includes a carbonyl sulfide hydrolysis step for reacting the carbonyl sulfide with the moisture to hydrolyze the carbonyl sulfide into hydrogen sulfide and carbon dioxide, and a desulfurization step for separating the hydrogen sulfide.
B01D 53/14 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par absorption
B01J 20/06 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des oxydes ou des hydroxydes des métaux non prévus dans le groupe
C07C 1/22 - Préparation d'hydrocarbures à partir d'un ou plusieurs composés, aucun d'eux n'étant un hydrocarbure à partir de composés organiques ne renfermant que des atomes d'oxygène en tant qu'hétéro-atomes par réduction
C07C 29/15 - Préparation de composés comportant des groupes hydroxyle ou O-métal liés à un atome de carbone ne faisant pas partie d'un cycle aromatique à six chaînons par réduction exclusivement des oxydes de carbone
A hot pressed member that has excellent corrosion resistance after coating, in particular when a zirconium chemical conversion treatment is applied, and with reduced microcracks. The hot pressed member includes a steel sheet, a coated or plated layer containing FeAl, Fe2Al5, and Zn distributed over at least one side of the steel sheet, and a Zn-containing oxide layer distributed over the coated or plated layer. The solute Zn content in the FeAl is less than 10 mass %.
The purpose of the present invention is to provide: an electric resistance welded steel pipe having excellent welded section quality; and a method for manufacturing the same. Provided is an electric resistance welded steel pipe having a base material and an electric resistance welded section, wherein: the base material has a component composition including, in terms of mass%, 0.10-0.50% of C, 0.15-0.35% of Si, 0.60-0.90% of Mn, 0.001-0.1% of Al, 0.03% or less of P, 0.03% or less of S, 0.90-1.20% of Cr, 0.15-0.30% of Mo, and 0.25% or less of Ni, with the balance consisting of Fe and unavoidable impurities; in the component composition, Mn/(Si + Cr) is 0.52-0.85; and formula (1) is satisfied in a flattening test of the electric resistance welded steel pipe. Formula (1): h/D ≤ 0.5, where h is the flat crack height (mm) at which a first crack is found in the electric resistance welded section, and D is the outer diameter (mm) of the steel pipe.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
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 38/44 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/54 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du bore
43.
METHOD, DEVICE, AND PROGRAM OF DESIGNING PRESS FORMING DIE, AND METHOD OF MANUFACTURING PRESS FORMED PART
A designing method of a press forming die reduces a press forming load and includes: making a die model in which a surface of the press forming die is provided with a virtual thickness by a nonrigid two-dimensional element; setting stiffness distributions of the die model by making a boundary condition of the two-dimensional element vary depending on a portion of the die model; acquiring a press forming load by performing a press forming analysis by using the die model in which the stiffness distributions are set; determining whether the press forming load is within a predetermined range of the press forming load; determining the set stiffness distributions of the die model as design stiffness distributions of the press forming die in a case where it is determined that the press forming load is within the predetermined range of the press forming load.
A quenching apparatus that is configured to cool a metal sheet, the quenching apparatus including: a cooling device that is configured to perform quenching by cooling the metal sheet with a cooling fluid; a plurality of shape correction rolls that includes at least a front shape correction roll and a back shape correction roll that are configured to be respectively provided at a front surface and a back surface of the metal sheet and press, in a thickness direction of the metal sheet, the metal sheet before being quenched; and a pressing processor that is configured to set, based on a shape of the metal sheet before quenching, a pressing quantity of each shape correction roll of the plurality of shape correction rolls.
A quenching apparatus that is configured to cool a metal sheet, the quenching apparatus including: a cooling device that includes a plurality of jet nozzles that is configured to spray a cooling fluid onto a front surface and a back surface of the metal sheet; and a flow rate adjustment processor that that is configured to set a flow rate of the cooling fluid that is sprayed from the plurality of jet nozzles onto the front surface and the back surface of the metal sheet based on a shape of the metal sheet before quenching.
Provided are: a transport roll regeneration method with which an adhering substance on the outer peripheral surface of a transport roll can be efficiently removed; a steel plate manufacturing method; and a transport roll regeneration device. The transport roll regeneration method is for regenerating a transport roll provided in an annealing furnace in order to transport a steel plate, wherein the outer peripheral surface of the transport roll is formed from ceramic, and an adhering substance on the outer peripheral surface of the transport roll is removed by bringing an alkali aqueous solution into contact with the outer peripheral surface of the transport roll.
Provided is a technology for improving productivity while suppressing defects when forming a high-strength steel sheet. A method for manufacturing a press-formed product according to the present invention is a method for press-forming a blank material to manufacture a press-formed product including a top plate portion having an outer peripheral edge portion including a curved portion, a vertical wall portion continuous with the outer peripheral edge portion of the top plate portion, and a flange portion continuous with the vertical wall portion, characterized in that a step for forming a curved vertical wall portion of the vertical wall portion that is continuous with the curved portion includes: a pre-forming step for generating a curved vertical wall portion having a stepped shape in which a lower vertical wall portion, from a stepped portion provided at a prescribed position in a height direction of the curved vertical wall portion to the flange portion, protrudes to the flange portion side relative to an upper vertical wall portion from the stepped portion to the top plate portion; and a main forming step for using a die having a cam structure to flatten the curved vertical wall portion having a stepped shape to the curved vertical wall portion having a flat shape.
The present invention provides a high-strength hot-dip galvanized steel sheet that has excellent plating appearance, plating adhesion during intense processing, and LME cracking resistance. Provided is a method for producing a high-strength hot-dip galvanized steel sheet having, at a plating adhesion amount of 20-120 g/m222 and 0.5-10.0 vol ppm HCl.
SURFACE TREATMENT LIQUID FOR GALVANIZED STEEL SHEETS, METHOD FOR PRODUCING GALVANIZED STEEL SHEET WITH SURFACE TREATMENT COATING FILM, AND GALVANIZED STEEL SHEET WITH SURFACE TREATMENT COATING FILM
The present invention provides a surface treatment liquid for galvanized steel sheets, which has excellent storage stability and is capable of producing a galvanized steel sheet with a surface treatment coating film excellent in terms of long-term perspiration resistance, flat plate part corrosion resistance, and the like. A surface treatment liquid for galvanized steel sheets according to the present invention is characterized by including a first surface treatment liquid (X) and a second surface treatment liquid (Y), and is also characterized in that: the first surface treatment liquid (X) contains a silane coupling agent (A) which has a glycidyl group, a tetraalkoxysilane (B), a zirconium carbonate compound (C), sodium silicate (D1), a vanadium compound (E), a molybdic acid compound (F), and water, and the contents of the components satisfy a specific relationship; and the second surface treatment liquid (Y) contains sodium silicate (D2), an anionic polyurethane resin (G), and water, and the contents of the components satisfy a specific relationship.
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
C09D 1/00 - Compositions de revêtement, p. ex. peintures, vernis ou vernis-laques, à base de substances inorganiques
C09D 1/02 - Compositions de revêtement, p. ex. peintures, vernis ou vernis-laques, à base de substances inorganiques silicates de métaux alcalins
C09D 5/00 - Compositions de revêtement, p. ex. peintures, vernis ou vernis-laques, caractérisées par leur nature physique ou par les effets produitsApprêts en pâte
C09D 183/06 - Polysiloxanes contenant du silicium lié à des groupes contenant de l'oxygène
C23C 22/60 - 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 alcalines d'un pH > 8
Provided is a management method for managing information about a plurality of piles of granular materials or powdered materials, the method comprising: a map generation step (S1, S2) for generating a three-dimensional map representing the positions and shapes of a plurality of piles; an association step (S3 to S7) for associating the positions of the plurality of piles in the three-dimensional map with information about the plurality of piles; and an output step (S8, S9) for, when a display terminal is pointed at a target pile of the plurality of piles, outputting information about the target pile in order to display the information together with an image of the target pile on the display terminal.
B65G 63/00 - Transfert ou transbordement aux zones de stockage, aux gares de marchandises ou aux portsInstallations de gares de triage
G01B 11/24 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes
51.
SCALE REMOVAL FACILITY FOR STEEL SHEET, PRODUCTION FACILITY FOR STEEL SHEET, METHOD FOR REMOVING SCALES FROM STEEL SHEET, AND METHOD FOR PRODUCING STEEL SHEET
A scale removal facility according to the present invention removes scales from a steel sheet that is being conveyed. The scale removal facility includes, in the order from the upstream side in the conveyance direction of the steel sheet, a first acid pickling device that performs first acid pickling on the steel sheet using a first acid solution, a destruction device that mechanically destroys the scales, and a second acid pickling device that performs second acid pickling on the steel sheet using a second acid solution.
B21B 45/06 - Dispositifs pour le traitement de surface des pièces spécialement combinés aux laminoirs, disposés dans les laminoirs, ou adaptés pour être utilisés avec les laminoirs pour décaper, p. ex. décalaminer des bandes de métal
C23G 1/04 - Nettoyage ou décapage de matériaux métalliques au moyen de solutions ou de sels fondus avec des solutions acides avec emploi d'inhibiteurs
The present invention provides: a welded joint for a floating offshore wind turbine composed of a tower member, a floating body member, and a bracket, wherein the welded joint improves the fatigue strength of a welded part by extending a weld bead on the floating body member; and a method for manufacturing the same. A welded joint according to the present invention has a first weld bead, a second weld bead, and a third weld bead. The first weld bead is formed along one short side of a rectangular contact surface through which the bracket contacts the floating body member. The second weld bead and the third weld bead are formed along both long sides of the rectangular contact surface, and are formed covering a starting end section or a terminal end section of the first weld bead and extended on the floating body member. In addition, M/N, which represents the ratio of the distance M between the leading end of the second weld bead and the leading end of the third weld bead to the length N of an extended part of the second weld bead or the third weld bead, is preferably 2.0 or less.
B23K 31/00 - Procédés relevant de la présente sous-classe, spécialement adaptés à des objets ou des buts particuliers, mais non couverts par un seul des groupes principaux
B23K 9/02 - Soudage de joints continusSupportsPièces rapportées
53.
METHOD OF MANUFACTURING GRAIN-ORIENTED ELECTRICAL STEEL SHEET
Provided is a method of manufacturing a grain-oriented electrical steel sheet with a well-formed base film and excellent magnetic properties. After subjecting a steel sheet to cold rolling and decarburization annealing, an annealing separator containing Ti oxide in a predetermined ratio to MgO is applied to the steel sheet surface and dried, and then the steel sheet is held as a coil in a final annealing furnace and subjected to final annealing, where in a heating process of the final annealing, the atmosphere is set to H2: 100 vol % when the maximum temperature of the coil reaches 1100° C., and within 15 hours after the maximum temperature of the coil reaches 1100° C., and after a temperature difference between the maximum temperature and the minimum temperature of the coil becomes 75° C. or less, the atmosphere is changed to a H2 atmosphere containing 5 vol % or more of N2.
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
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
54.
CARBON-COATED NON-GRAPHITIZABLE CARBON, LITHIUM ION SECONDARY BATTERY NEGATIVE ELECTRODE, AND LITHIUM ION SECONDARY BATTERY
Carbon-coated non-graphitizable carbon used for a negative electrode for a lithium-ion secondary battery, a negative electrode for a lithium-ion secondary battery using the carbon-coated non-graphitizable carbon, and a lithium-ion secondary battery including the negative electrode for a lithium-ion secondary battery are disclosed. The carbon-coated non-graphitizable carbon is carbon-coated non-graphitizable carbon comprising: non-graphitizable carbon; and a carbon coating layer provided on a surface of the non-graphitizable carbon, wherein an average thickness of the carbon coating layer is 4 nm or more and 30 nm or less, and a minimum value of a thickness of the carbon coating layer is 70% or more of a maximum value of the carbon coating layer.
H01M 4/583 - Matériau carboné, p. ex. composés au graphite d'intercalation ou CFx
H01M 4/02 - Électrodes composées d'un ou comprenant un matériau actif
H01M 10/0525 - Batteries du type "rocking chair" ou "fauteuil à bascule", p. ex. batteries à insertion ou intercalation de lithium dans les deux électrodesBatteries à l'ion lithium
55.
CRANE, TRANSPORTATION METHOD, AND PLATE MEMBER MANUFACTURING METHOD
A crane, a transportation method, and a plate member manufacturing method are disclosed. There is provided a crane for performing handling and transportation of a plate member, and the crane includes: a holding mechanism configured to lift and hold the plate member; a drive mechanism configured to move the holding mechanism at least horizontally; an image acquisition mechanism configured to acquire an image of the plate member such that the image includes a feature portion of the plate member; and a control mechanism configured to detect the feature portion from the image, calculate a position of the plate member from a position of the feature portion, and adjust a horizontal position of the holding mechanism based on the position of the plate member.
Provided are a steel sheet; a related member; and methods for manufacturing the same. The steel sheet has a chemical composition including, in mass %, C: 0.06 to 0.25%, Si: 0.4 to 2.5%, Mn: 1.5 to 3.5%, P: 0.02% or less, S: 0.01% or less, sol. Al: less than 1.0%, and N: less than 0.015%, the balance being Fe and incidental impurities, the steel sheet being such that the steel sheet includes a steel microstructure including, in area fraction, polygonal ferrite: 10% or less (including 0%), tempered martensite: 40% or more, fresh martensite: 20% or less (including 0%), bainitic ferrite having 20 or less internal carbides per 10 μm2: 3 to 40%, and, in volume fraction, retained austenite: 5 to 20%, and the steel sheet has SC≥0.5/SC≥0.3×100 of 20% or more.
With this invention, a deposit under a belt of a belt conveyor provided with a mobile machine is collected and moved to the outside of a rail. Provided is a cleaning device for cleaning a deposit having accumulated under a belt of a belt conveyor, the cleaning device including a collection means which is mounted on a mobile machine traveling on a rail provided along a conveyance direction of the belt conveyor, collects the deposit under the belt, and moves the deposit to the outside of the rail.
B65G 43/02 - Dispositifs de commande, p. ex. de sécurité, d'alarme ou de correction des erreurs détectant une condition physique dangereuse des porte-charges, p. ex. pour stopper l'entraînement en cas d'échauffement
B65G 45/14 - Dispositifs de nettoyage comportant des raclettes des raclettes mobiles
Provided is a pressure vessel for high-pressure hydrogen gas capable of large-capacity hydrogen storage with a single pressure vessel while being easy to produce, transport, and install. A pressure vessel for high-pressure hydrogen gas comprises a steel container that is composed of two or more steel pipes or tubes connected by screw threads.
F17C 1/14 - Récipients sous pression, p. ex. bouteilles de gaz, réservoirs de gaz, cartouches échangeables en aluminiumRécipients sous pression, p. ex. bouteilles de gaz, réservoirs de gaz, cartouches échangeables en acier amagnétique
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 38/42 - 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
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 38/52 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cobalt
C22C 38/54 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du bore
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
59.
COAL ANALYZER, COAL ANALYSIS METHOD, MIXED COAL PREPARATION METHOD, AND COKE PRODUCTION METHOD
An information processing device including a target person information acquisition unit configured to acquire target person information about a target person, an exercise evaluation information acquisition unit configured to acquire exercise evaluation information indicating evaluation of an exercise of the target person, a storage unit configured to store a trained model that outputs instruction content in which, when the target person information and the exercise evaluation information are input, evaluation of exercise information of the target person is estimated to be improved, and a report output unit configured to input the target person information and the exercise evaluation information to the trained model and output an instruction report including the instruction content output from the trained model.
C10B 57/04 - Autres procédés de carbonisation ou de cokéfactionCaractéristiques générales des procédés de distillation destructive utilisant des charges de composition spéciale
C10L 5/04 - Matière première à utiliserSon prétraitement
G01N 21/27 - CouleurPropriétés spectrales, c.-à-d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en utilisant la détection photo-électrique
G01N 21/84 - Systèmes spécialement adaptés à des applications particulières
Provided is a non-oriented electrical steel sheet with low high-frequency iron loss without addition of a large amount of alloying elements such as Cr, which causes a decrease in magnetic flux density, and without reduction of the sheet thickness, which causes a decrease in productivity. A non-oriented electrical steel sheet comprises a certain chemical composition containing 0.0005 mass % to 0.0050 mass % of Co, wherein an amount of N existing as AlN in a range from a surface of the non-oriented electrical steel sheet to a depth of 1/20 of a sheet thickness is 0.003 mass % or less, the surface has an oxide layer containing Fe and one or both of Al and Si, and an interface between the oxide layer and a steel substrate has an oxide film consisting of one or both of Al oxide and Si oxide.
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C21D 6/00 - Traitement thermique des alliages ferreux
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 38/00 - Alliages ferreux, p. ex. aciers alliés
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
The purpose of the present invention is to provide a method for producing a friction stir welded joint. The present invention is a method for producing a friction stir welded joint, in which a tool tip is inserted into a butt surface of joining workpieces and the tool is moved in the joining direction while being rotated in order to effect stir welding between the joining workpieces. The joining workpieces are steel sheet having a component composition comprising, in mass%, C: 0.01-0.15%, Si: 0.01-0.50%, Mn: 0.05-1.00%, and Ni: 6.5-10.0%. In the friction stir, using A for the tool rotational speed (rpm) and B for the welding speed (mm/min), welding conditions are satisfied at which the value of X, which represents A/B for each pass, is 0 < X ≤ 8.0 and 50 ≤ A ≤ 500.
B23K 20/12 - Soudage non électrique par percussion ou par une autre forme de pression, avec ou sans chauffage, p. ex. revêtement ou placage la chaleur étant produite par frictionSoudage par friction
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/08 - Alliages ferreux, p. ex. aciers alliés contenant du nickel
C22C 38/54 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du bore
62.
STEEL SHEET, MEMBER, AND PRODUCTION METHODS THEREOF
Provided is a steel sheet having a TS of 780 MPa or more and less than 1,180 MPa and having high YS and excellent press formability of the inside of the steel sheet and at an edge of the steel sheet. This steel sheet has a base steel sheet having a predetermined composition, and a surface soft layer having a Vickers hardness of 84% or less with respect to the 1/4 position of the sheet thickness from the surface of the base steel sheet and satisfying formula (1), wherein the surface soft layer has a structure within a specific range, the structure at the 1/4 position of the sheet thickness of the base steel sheet is within a specific range, and the steel sheet has a tensile strength of 780 MPa or more and less than 1,180 MPa. Formula (1): 20≤X≤120-3800×[Sb]-1900×[Sn], provided that in formula (1), X is the thickness (μm) of the surface soft layer; and [Sb] and [Sn] are the content (mass%) of Sb and Sn in the steel, respectively.
A high strength steel plate having excellent ammonia SCC resistance and low-temperature toughness for use in storage tanks used to contain liquefied gas in energy transport ships. The steel plate has a defined chemical composition, and has hardness properties such that, at a 0.5 mm depth position from the surface of the steel plate, average hardness is 230HV0.1 or less and hardness variation is 30HV0.1 or less, a maximum value of hardness in the thickness direction is at a position 1.0 mm or more and ¼ or less of the thickness of the steel plate from the surface of the steel plate, and hardness variation in the thickness direction is 70HV1 or less. Further, the steel plate has a metallic microstructure where, at a 0.5 mm depth position from the surface of the steel plate, a volume fraction of bainitic microstructure is 90% or more.
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
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
A high strength steel plate having excellent ammonia SCC resistance and low-temperature toughness for use in storage tanks and the like used to contain liquefied gas in energy transport ships. The steel plate has a defined chemical composition, in particular including one or more of Cu: 0.01% to 0.5 %, Cr: 0.01% to 1.0%, Sb: 0.01% to 0.50%, or Sn: 0.01% to 0.50%, and the chemical composition satisfies a defined relationship of the Cu, Cr, Sb, and Sn content. Further, a hardness property at a 1.0 mm depth position from the surface of the steel plate is 300 HV or less, and the metallic structure at a ½ thickness position of the steel plate has a volume fraction of bainitic microstructure of 20% or more and a total volume fraction of ferritic microstructure and bainitic microstructure of 60% or more.
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
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
65.
PRESS FORMING METHOD AND PRESS FORMED PART MANUFACTURING METHOD
A press forming method of forming a press formed part including: a top portion having a convex peripheral edge having a whole of or part of an outer peripheral edge curved outward in a convex shape; a side wall portion continuous to the top portion via a punch shoulder R portion; and a flange portion continuous to the side wall portion via a die shoulder R portion, the method includes: (a) forming a metal sheet into a preformed part; and (b) forming the preformed part formed in (a) into the press formed part having a target shape, wherein (a) performs forming such that a bending radius of the die shoulder R portion formed corresponding to at least the convex peripheral edge of the top portion of the preformed part is larger than a bending radius of the die shoulder R portion of the press formed part having the target shape.
A surface inspection method for a metal material according to the present invention is a surface inspection method for material in which a surface defect of the metal material is optically detected, the method including: an irradiating step of irradiating a surface of the metal material with light; an image capturing step of obtaining a plurality of images by capturing reflected light from the surface of the metal material by the light emitted in the irradiating step in two or more different wavelength bands; and a detecting step of detecting a surface defect present on the surface of the metal material from information of a relative signal intensity between the plurality of images obtained from a same position on the surface of the metal material in the image capturing step.
G01N 21/88 - Recherche de la présence de criques, de défauts ou de souillures
G01N 21/31 - CouleurPropriétés spectrales, c.-à-d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p. ex. spectrométrie d'absorption atomique
An electrical steel sheet provided with an insulating coating is disclosed. A pre-treatment liquid to be used on an electrical steel sheet having a forsterite coating on a surface thereof before applying an insulating coating treatment liquid containing a phosphate is also disclosed. When a phosphate concentration of the pre-treatment liquid is defined as A mass % in terms of H3PO4, a refractive index R of the pre-treatment liquid satisfies Formula (1):
An electrical steel sheet provided with an insulating coating is disclosed. A pre-treatment liquid to be used on an electrical steel sheet having a forsterite coating on a surface thereof before applying an insulating coating treatment liquid containing a phosphate is also disclosed. When a phosphate concentration of the pre-treatment liquid is defined as A mass % in terms of H3PO4, a refractive index R of the pre-treatment liquid satisfies Formula (1):
9.0×10−4×A+1.3340≤R (1).
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
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
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 28/04 - Revêtements uniquement de matériaux inorganiques non métalliques
68.
STEEL SHEET, MEMBER, AND PRODUCTION METHODS FOR SAME
This steel sheet is set to have a TS of not less than 1180 MPa but less than 1470 MPa, and to have high YS, excellent ductility, excellent press formability of the inside of the steel sheet and the end part of the steel sheet, and high crack propagation resistance. The steel sheet is composed of a base steel sheet as a predetermined component composition, has Vickers hardness of 84% or less at the 1/4 position in the plate thickness from the surface of the base steel sheet, and has a surface soft layer that satisfies the following formula (1). The structure in the surface soft layer is set in a specific range, and the structure at the 1/4 position in the plate thickness of the base steel sheet is set in a specific range. The crack length progressing from a bent ridge line end part in the ridge line direction as a result of a 90-degree V bending test performed at a bending radius of 0.5 mm is 200 μm or less. The steel sheet exhibits EI of 6.0% or more as a result of a notching tension test performed after subjection to heat treatment at 170°C for 20 minutes, and exhibits El of 5.0% or more as a result of the notching tension test performed after introduction of the nominal tensile strain of 2% and subjection to the heat treatment at 170°C for 20 minutes. (1): 20≤X≤120-3800×[Sb]-1900×[Sn]
Provided is a framework member that has a tensile strength between 980 MPa and 1.8 GPa (both inclusive) and is excellent in axial collapse characteristics. This framework member uses a steel sheet having a base steel sheet. A cross-sectional shape thereof includes a top plate portion extending in the width direction and two vertical wall portions extending from both ends in the width direction of the top plate portion in a direction different from the extension direction of the top plate portion. The base steel sheet of the top plate portion includes, in the surface layer, a surface layer soft layer of which the Vickers hardness is 84% or less of that at a 1/4 sheet thickness position. The thickness of the surface layer soft layer satisfies the following formula (1). The tensile strength of the framework member is between 980 MPa and 1.8 GPa (both inclusive). (1): 20 ≤ X ≤ 0.1 × t - 3800 × [Sb] - 1900 × [Sn] In the formula, X is the thickness (μm) of the surface layer soft layer, t is the thickness (μm) of the base steel sheet, and [Sb] and [Sn] are the contents (mass %) of Sb and Sn in the base steel sheet, respectively.
C22C 18/04 - Alliages à base de zinc avec l'aluminium comme second constituant majeur
70.
CARBON MATERIAL–COATED GRAPHITE PARTICLES, LITHIUM ION SECONDARY BATTERY NEGATIVE ELECTRODE, LITHIUM ION SECONDARY BATTERY, AND PRODUCTION METHOD FOR CARBON MATERIAL–COATED GRAPHITE PARTICLES
There is provided carbonaceous substance-coated graphite particles that are excellent in all of output characteristic, fast charging characteristic, and cycle characteristic when used as a negative electrode material for a lithium ion secondary battery. The carbonaceous substance-coated graphite particles include graphite particles and a carbonaceous substance covering at least part of surfaces of the graphite particles. A mass reduction starting temperature when the carbonaceous substance-coated graphite particles are heated in a water vapor atmosphere is 800°C to 980°C, and a content of the carbonaceous substance is 0.1 to 15.0 parts by mass with respect to 100.0 parts by mass of the graphite particles.
Provided is a high-strength electric resistance welded steel pipe or tube having excellent SSC resistance. An absolute value of circumferential residual stress on a pipe or tube inner surface of the electric resistance welded steel pipe or tube is 10 MPa or more, and an absolute value of shear residual stress on the pipe or tube inner surface is 300 MPa or less. In a steel microstructure at a wall thickness center of a base metal portion of the electric resistance welded steel pipe or tube, a total volume fraction of ferrite and bainite is 90% or more and an average crystal grain size is 9.0 µm or less. In a steel microstructure at a position 0.1 mm radially outward from the pipe or tube inner surface of the base metal portion, a total volume fraction of ferrite and bainite is 95% or more.
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
B21C 37/08 - Fabrication de tubes à joints soudés ou brasés
B21C 37/30 - Finition des tubes, p. ex. calibrage, polissage
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 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
72.
CARBONACEOUS MATERIAL-COATED GRAPHITE PARTICLES, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERIES, LITHIUM ION SECONDARY BATTERY, AND METHOD FOR PRODUCING CARBONACEOUS MATERIAL-COATED GRAPHITE PARTICLES
There is provided carbonaceous substance-coated graphite particles that exhibit an excellent cycle capacity maintaining characteristic when used as a negative electrode material for a lithium ion secondary battery. The carbonaceous substance-coated graphite particles include: graphite particles; and a carbonaceous substance covering at least part of surfaces of the graphite particles. An elastic modulus of the carbonaceous substance-coated graphite particles determined using a scanning probe microscope is not less than 10 GPa.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/587 - Matériau carboné, p. ex. composés au graphite d'intercalation ou CFx pour insérer ou intercaler des métaux légers
73.
STEEL SHEET FOR HOT PRESS FORMING, METHOD OF PRODUCING STEEL SHEET FOR HOT PRESS FORMING, HOT PRESSED MEMBER, AND METHOD OF PRODUCING HOT PRESSED MEMBER
A steel sheet for hot press forming that can reduce diffusible hydrogen content introduced in hot press forming without controlling the atmosphere dew point, and may be used to obtain a hot pressed member that has excellent post-coating corrosion resistance. The steel sheet includes a base steel sheet and a coated layer on both sides of the base steel sheet. The coated layer has a chemical composition containing Si: 7 mass % to 11 mass %, Mg: 0.6 mass % to 1.9 mass %, one or both of Ca and Sr: in total, 1.0% to 10% of Mg, and Fe: 0 mass % to 30 mass %, with the balance being Al and inevitable impurity. Concentration of Mg solute in Al phase in the coated layer is less than 1 mass %, and average thickness of the coated layer is 10 μm to 30 μm on each side of the base steel sheet.
For a steel sheet for hot pressing having a coating layer to prevent scale formation, adhesion of metals to heating equipment is reduced, liquid metal embrittlement cracking during hot press forming is prevented, and excellent post-painting corrosion resistance is achieved. A coated steel sheet for hot pressing includes: a base steel sheet; and a coating layer of 7 μm to 20 μm in thickness provided on both sides of the base steel sheet, wherein the coating layer is made of Ni or a Ni-based alloy, and a Zn content in the coating layer is 0 mass % to 10 mass %.
An additive manufacturing product including a steel matrix and ceramic particles dispersed in the steel matrix. The steel matrix has a chemical composition containing, in mass %, C: 0.030% or more and 0.800% or less, Si: 0.01% or more and 2.50% or less, Mn: 0.10% or more and 8.00% or less, P: 0.100% or less, S: 0.0200% or less, Al: 0.100% or less, N: 0.1000% or less, and O: 0.5000% or less, with the balance being Fe and inevitable impurity. The steel matrix has a steel microstructure where area fraction of pores is 0.50% or less, area fraction of martensite in a region excluding pores is 90% or more, average aspect ratio of prior austenite grains is 1.5 or more, and LHA/L is 2.0 or more. Melting point of the ceramic particles is 2000° C. or more.
Provided is a steel material having excellent cold forgeability. This steel material has a predetermined component composition and a structure in which the area ratio of martensite is 10.0% or less with the remainder comprising at least bainite, wherein the number density of sulfide-based inclusions having an equivalent circle radius of 1-20 μm is at least 10.0/mm2, and the number density of sulfide-based inclusions having an equivalent circle radius of at least 1 mm is at most 0.10/mm2.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C21D 8/06 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de barres ou de fils
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
77.
ROLLING LOAD DISTRIBUTION CALCULATION METHOD, ROLLING LOAD CALCULATION METHOD, CONTACT ARC LENGTH CALCULATION METHOD, AND ROLLING METHOD
This rolling load distribution calculation method for a rolling mill 10 includes: a step in which the contact arc length of at least an elastic restoration region or an elastic reduction region is calculated on the basis of Hooke's law with a material to be rolled 1 in a state of plane strain, the balance of forces within a roll bite of the rolling mill 10, and the distribution of rolling direction stress approximated by a function dependent on positional coordinates in a rolling direction of the rolling mill 10; and a step in which the rolling load distribution for at least the elastic restoration region or the elastic reduction region is calculated on the basis of the contact arc length.
B21B 37/58 - Commande de la force de laminageCommande de l'écartement des cylindres
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 37/00 - Dispositifs ou procédés de commande spécialement adaptés aux laminoirs ou aux produits laminés
A continuous casting start timing determination method, a continuous casting facility operation method, a slab manufacturing method, a determining device, a continuous casting start determination system, and a display terminal device are provided. A continuous casting start timing determination method for determining a continuous casting start timing includes: a measurement step of measuring temperatures in a copper plate of a casting mold in the continuous casting facility, by use of a plurality of temperature sensors provided in a casting-direction determination position as a predetermined casting-direction position on the copper plate; and a determination step of determining the start timing based on a casting-direction position of a molten metal surface of molten steel, the casting-direction position being estimated based on measurement results in the measurement step and a width of a slab to be cast in the continuous casting facility.
Provided is a grain-oriented electrical steel sheet having excellent magnetic properties. In an aging treatment method of subjecting a steel sheet before final cold rolling to aging treatment in a process of producing a grain-oriented electrical steel sheet, a total aging amount of carbon during a period from completion of cooling in annealing before the final cold rolling to biting in the final cold rolling is 0.02 μm to 0.5 μm in terms of diffusion distance of carbon.
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
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
80.
HOT-DIP GALVANIZED STEEL SHEET AND PRODUCTION METHOD THEREFOR
The present invention provides a high-strength hot-dip galvanized steel sheet having a pleasing surface appearance without any missing plating and excellent delayed fracture resistance, and a production method therefor. The hot-dip galvanized steel sheet comprises: a base material steel sheet which has a component composition containing, in mass%, 0.06% to 0.30% C, 0.01% to less than 3.00% Si, 1.5% to 3.5% Mn, 0.1% or less (not including 0%) P, 0.003% or less (not including 0%) S, 0.1% or less (not including 0%) sol. Al, 0.007% or less (not including 0%) N, and 0.003% or less (not including 0%) O, with the remainder consisting of Fe and unavoidable impurities; and a zinc-based plating layer which is formed on the surface of the base material steel sheet and in which the plating coating mass per surface is 20-120 g/m2. The total hydrogen released at 200-350°C is 0.20 mass ppm or less when measured using dynamic temperature analysis.
The present invention provides a hot-dip galvanized steel sheet that is high-strength and that has a pleasing surface appearance without any missing plating and excellent delayed fracture resistance, and a production method therefor. The hot-dip galvanized steel sheet comprises: a base steel sheet which has a component composition containing specific amounts of C, Si, Mn, P, S, sol. Al, N, and O, and further containing specific amounts of specific optional elements, with the remainder consisting of Fe and unavoidable impurities; and a zinc-based plating layer which is formed on a surface of the base steel sheet. The amount of inclusion groups satisfying specific conditions in the base steel sheet is 10 groups/mm2LHH of 0.20 mass ppm or less, and the tensile strength of the hot-dip galvanized steel sheet is 780 MPa or more.
Provided is a steel bar having excellent cold forgeability after being subjected to spheroidizing annealing. In one embodiment, in a steel bar containing predetermined amounts of Cr, Ni, and Cu, the length of the major axis of a specific cementite particle having an aspect ratio of 2.0 or less when the shape of cementite particles observed in m observation fields (m being an integer of 2 or more) in a cross section perpendicular to the length direction is elliptically approximated is 10.0 μm or less in all of the m observation fields, and variations in the Cu content and the Ni content measured in the m observation fields are small. In another embodiment, in a steel bar containing predetermined amounts of Cr, Ni, and Cu, among the equivalent circle diameters of the cementite particles observed in n observation fields (n being an integer of 2 or more) in a cross section perpendicular to the length direction, the maximum value of the equivalent circle diameter is 15.0 μm or less in every observation field, and the variation in the maximum value is small.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/42 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cuivre
C22C 38/54 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du bore
C21D 8/06 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de barres ou de fils
83.
BREAKOUT PREDICTION METHOD AND METHOD FOR OPERATING CONTINUOUS CASTING MACHINE
A breakout prediction method according to the present invention comprises: a step for inputting the dimensions of a cast slab drawn out from a mold in a continuous casting machine; a step for detecting the temperature of the mold by means of a plurality of thermometers embedded in the mold; a step for executing interpolation processing on the detected temperatures detected by the plurality of thermometers, in accordance with the dimensions of the cast slab; a step for calculating the temperature change amount by comparing the temperature with the temperature before a first period; a step for acquiring a standard deviation of the temperature change amount for each of the thermometers in a second period; a step for standardizing the temperature change by dividing the temperature change amount by the standard deviation; a step for calculating, on the basis of the temperature change amount calculated by executing the interpolation processing, a component in a direction orthogonal to an influence coefficient vector obtained from the principal component analysis as a degree of deviation from a normal operation in which no breakout is occurring; and a step for predicting the breakout on the basis of the degree of deviation.
POWDER PROPERTY-MODIFYING METHOD, PRODUCTION METHOD FOR WATER-CONTAINING BULK MATERIAL, WATER-CONTAINING BULK MATERIAL, AND GRANULATION METHOD FOR RAW MATERIAL FOR SINTERING
Provided are methods for solving various problems that are attributed to moisture contents when handling water-containing powders. One method is a powder property-modifying method used when handling a water-containing bulk material including a mineral ore, coal, and limestone, and includes adding an active component of a chemical agent whose main component is at least one selected from a polymer flocculant, an inorganic flocculant, and a polymer water absorption material, in an amount of 0.001 to 0.07% by mass with respect to the mass of the bulk material, in which water inside the bulk material is retained in a bridge structure formed between the chemical agent and a powder composing the bulk material. Another method is a production method for a water-containing bulk material that is transported via at least one selected from a vessel, a transporter vehicle, a loading heavy machine, a delivering heavy machine, a conveyor belt, and a storage tank. This production method includes modifying such water-containing bulk material with the above modifying method.
Ridging caused when handling steel containing a large amount of alloying elements such as Si and Al in a low-speed hot rolling process is suppressed. A method of producing a hot-rolled steel sheet for a non-oriented electrical steel sheet comprises: producing a steel slab having a certain chemical composition and a thickness of 50 mm to 200 mm by continuous casting; conveying the steel slab to a hot rolling line while maintaining a surface temperature of the steel slab at 800° C. or more; and performing hot rolling in which the steel slab is sequentially subjected to rough rolling, reheating treatment, and finish rolling in the hot rolling line to obtain a hot-rolled steel sheet, wherein the hot rolling is performed under specific conditions.
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
B22D 11/00 - Coulée continue des métaux, c.-à-d. en longueur indéfinie
C21D 6/00 - Traitement thermique des alliages ferreux
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 38/00 - 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 38/42 - 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
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 38/52 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cobalt
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
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
H01F 1/147 - Alliages caractérisés par leur composition
88.
PROJECTION WELDED JOINT AND PROJECTION WELDING METHOD
A welded joint formed by performing projection welding on a high-strength coated steel sheet and a nut, includes a content of solid solution Mn in a first region in a surface layer of the steel sheet on an outermost periphery of a weld is 40% or less of a content of solid solution Mn in a second region in a central region in a thickness direction of the steel sheet on the outermost periphery of the weld, and a content of solid solution Mn in a third region in the surface layer of the steel sheet on an innermost periphery of the weld is 40% or less of a content of solid solution Mn in a fourth region in the central region in the thickness direction of the steel sheet on the innermost periphery of the weld.
Provided are a method with which it is possible to more accurately evaluate delayed fracture at a shear end surface, and a method for manufacturing a press-molded article using the aforementioned method. A method for evaluation delayed fracture, with which the delayed fracture characteristics of a shear end surface of a metal plate are evaluated, includes: testing whether delayed fracture has occurred in the application of molding strain and load stress to the shear end surface of the metal plate; deriving, on the basis of the test, evaluation information pertaining to whether delayed fracture has occurred with respect to the molding strain and the load stress at each evaluation position from among two or more evaluation positions following the plate direction of the shear end surface; and deriving, from the derived evaluation information, an evaluation standard for a delayed fracture evaluation in which the evaluation position, the molding strain, and the load stress are used as variables.
G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression
G01N 3/20 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique en appliquant des efforts permanents de flexion
G01N 17/00 - Recherche de la résistance des matériaux aux intempéries, à la corrosion ou à la lumière
90.
HOT-PRESSED MEMBER AND STEEL SHEET FOR HOT PRESSING
A method for predicting delayed fracture in a press-molded article according to the present invention comprises: calculating the stress distribution and the strain distribution in a press-molded article (S1); calculating the stress gradient in the direction of crack propagation due to delayed fracture in sites in the press-molded article that are at risk for delayed fracture (S3); setting the hydrogen concentration distribution corresponding to the strain distribution in the press-molded article (S5); performing hydrogen diffusion analysis on the press-molded article on the basis of the stress distribution and the hydrogen concentration distribution, and calculating the hydrogen concentration distribution after hydrogen diffusion (S7); and predicting whether or not delayed fracture occurs in a delayed fracture risk site on the basis of a delay fracture determination condition that is based on stress, strain, and hydrogen concentration at the stress gradient of the delayed fracture risk site, and on the basis of stress, strain, and hydrogen concentration at the delayed fracture risk site (S9).
The present invention provides electric furnace equipment that prevents overheating of molten metal by changing heat transfer between the molten metal and slag from heat conduction to forced convective heat transfer, and that improves production yield without making the equipment oversized. This electric furnace equipment stores molten metal, slag, a metal raw material, and an auxiliary raw material in layers, and enables the discharge of the molten metal and the slag. The electric furnace equipment comprises: an arc furnace having a bottom part, a furnace wall, and a furnace lid; and an electromagnetic stirrer disposed at a prescribed position on the bottom part or a side surface of the arc furnace in order to enable stirring of the molten metal that is in the arc furnace.
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
C21B 11/10 - Fabrication de la fonte brute autrement que dans les hauts fourneaux dans des fours électriques
C21C 5/52 - Fabrication de l'acier au four électrique
A method for operating an electric furnace is provided, in which, when a raw metallic material is melted in the electric furnace to produce a molten metal, high productivity is obtained and the refractory wear is less. The method for operating an electric furnace comprises stacking and accommodating, inside the electric furnace, a molten metal, slag, a raw metallic material, and a subsidiary raw material in this order and continuously discharging a molten metal and slag, wherein: the electric furnace comprises a bottom part, furnace walls, a furnace lid, and a means for molten-metal stirring; and the input power per surface of the molten metal is 300 kW/m2 or greater and the density of the power of stirring the molten metal by the stirring means is in the range of 5-100 W/t.
A method for producing a film according to the present invention comprises: a spectral reflectance calculation step for calculating a spectral reflectance from reflected light obtained by reflecting light by means of a film; an information calculation step for calculating, from the calculated spectral reflectance, information pertaining to the number of extreme values of the spectral reflectance and the wavelength-position relationship between the extreme values in a prescribed wavelength range; and a control step for controlling a film formation condition on the basis of the calculated information.
C23C 8/14 - Oxydation de la couche superficielle de matériaux ferreux
C21D 9/56 - Fours continus pour bandes ou fils métalliques
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
C23C 2/02 - Pré-traitement du matériau à revêtir, p. ex. pour le revêtement de parties déterminées de la surface
The present invention provides a method and an apparatus for manufacturing reduced iron briquettes that reuse DRI, fine powder, or the like which failed to be compacted into HBI, and that make it possible to expect improvement of yield of an iron source compared with a related art. A method for producing reduced iron briquettes according to the present invention comprises hot compression molding and briquetting reduced iron clusters composed of pellet-shaped reduced iron containing an iron component, wherein a reduced iron-derived powder is reheated, and the reheated reduced iron-derived powder is returned to the reduced iron clusters. An apparatus for producing reduced iron briquettes according to the present invention is for producing reduced iron briquettes by hot compression molding reduced iron clusters composed of pellet-shaped reduced iron containing an iron component, the apparatus comprising: sieve equipment for sieving the manufactured reduced iron briquettes into reduced iron briquettes as a product and a reduced iron-derived powder that is not the product; and a reheating facility for reheating the reduced iron-derived powder that is not the product and returning the reheated reduced iron-derived powder to the reduced iron clusters.
2325222222222 and that has a liquid phase ratio of 10 mass% or higher at 1000°C is adhered to the surface of a Cu-Sn-containing cast slab such that the mass per unit area is in the range of 50 g/m2to 5000 g/m2, a second flux that has a liquid phase ratio of 0 mass% at 1400°C or lower is adhered to the surface of the Cu-Sn-containing cast slab such that the mass per unit area is in the range of 50 g/m2to 5000 g/m2, and then the Cu-Sn-containing cast slab is heated at a temperature of 1000-1400°C; and a hot working step in which the Cu-Sn-containing cast slab is subjected to hot working.
B21B 45/00 - Dispositifs pour le traitement de surface des pièces spécialement combinés aux laminoirs, disposés dans les laminoirs, ou adaptés pour être utilisés avec les laminoirs
B21B 1/38 - 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 feuilles de longueur limitée, p. ex. des feuilles pliées, des feuilles superposées
B21B 45/06 - Dispositifs pour le traitement de surface des pièces spécialement combinés aux laminoirs, disposés dans les laminoirs, ou adaptés pour être utilisés avec les laminoirs pour décaper, p. ex. décalaminer des bandes de métal
C21D 1/70 - Revêtements temporaires ou matériaux d'enrobage appliqués avant ou pendant le traitement thermique pendant le chauffage ou la trempe
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 38/16 - Alliages ferreux, p. ex. aciers alliés contenant du cuivre
97.
IRONWORKS OPERATION ASSISTANCE METHOD, OPERATION ASSISTANCE DEVICE, DISPLAY DEVICE, AND OPERATION ASSISTANCE PROGRAM
Provided is an operation assistance method, which is used in ironworks having a blast furnace section, a coke section, and an energy section and executed by an information processing device, comprising: inputting data of blast furnace operation specifications influencing the energy section and data of a coke quantity influencing the energy section into a learning model; estimating a total cost by the learning model on the basis of the input data of the blast furnace operation specifications and the input data of the coke quantity; and outputting the estimated total cost. The learning model is a model trained on the basis of record data including records of the blast furnace operation specifications, the coke quantity, and the total cost.
Provided is an operation assistance method, which is used in ironworks having a blast furnace section, a steel manufacturing section, and an energy section and executed by an information processing device, comprising: inputting data of blast furnace operation specifications and ion distribution influencing the steel manufacturing section and energy section into a learning model; estimating a total cost by the learning model on the basis of the input data of the blast furnace operation specifications and ion distribution; and outputting the estimated total cost. The learning model is a model trained on the basis of record data including records of the blast furnace operation specifications and the total cost.
Provided is a non-oriented electrical steel sheet with low high-frequency iron loss without addition of a large amount of alloying elements such as Cr, which causes a decrease in magnetic flux density, and without reduction of the sheet thickness, which causes a decrease in productivity. A non-oriented electrical steel sheet comprises a certain chemical composition containing 0.0005 mass % to 0.0050 mass % of Co, wherein at at least one surface of the non-oriented electrical steel sheet, an amount of N existing as AlN in a range from the surface to a depth of 1/20 of a thickness of the non-oriented electrical steel sheet is 0.003 mass % or less, and the surface has an oxide layer containing one or both of Al and Si and having a thickness of 80 nm to 200 nm.
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
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 38/00 - 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 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/30 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du cobalt
C22C 38/34 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de silicium
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 38/52 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cobalt
H01F 1/147 - Alliages caractérisés par leur composition
Provided is a grain-oriented electrical steel sheet with good film adhesion. Among the elements present at grain boundaries between ceramic particles contained in a base film of the grain-oriented electrical steel sheet, either or both of S and Se elements are contained in a range of 0.02 at % to 2.00 at %.
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
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
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
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
H01F 1/147 - Alliages caractérisés par leur composition
