The present invention relates to a safety confinement equipment for laser radiation, including a safety confinement chamber (EN) having two laterally opposite openings (01, 02) through which at least one metal strip (B) can pass, the chamber including first and second jaw devices (M11, M12 M12s; M21, M22, M22s) for clamping the strip arranged on the path of travel of the strip between the two openings, wherein said jaws are transversely arranged at least over the width of the strip, a head (TL) of cutting or welding equipment emitting a beam of laser radiation to be confined, wherein said beam can be moved transversely between a pair of jaws (M11, M12) arranged opposite each other on one side of a surface of the strip, wherein, in the position in which the jaws clamp the strip, the engagement of the jaws (M11, M12, M12s; M21, M22, M22s) on the surfaces of the strip induces the formation of a physical screen (F1b) against the laser radiation, which prevents said radiation from passing through the two openings of the chamber.
B23K 26/42 - Traitement préliminaire; Opérations ou appareillage auxiliaires (B23K 26/16 a priorité);;
B23K 26/26 - Soudage de joints continus rectilignes
B23K 26/08 - Dispositifs comportant un mouvement relatif entre le faisceau laser et la pièce
B23K 37/00 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe
B23K 26/12 - Travail par rayon laser, p. ex. soudage, découpage ou perçage sous atmosphère particulière, p. ex. dans une enceinte
F16P 1/06 - Dispositifs de sécurité indépendants de la commande ou du fonctionnement de toute machine spécialement conçus pour le soudage à l'autogène
2.
EQUIPMENT AND METHOD FOR COLD-ROLLING A METAL STRIP
The invention relates to a rolling mill and to a cold-rolling method, wherein said rolling mill includes: an upper assembly of n rolls located in a recess of the rolling mill above a plane (P) along which a strip (9) to be rolled moves, and a lower assembly of n rolls located in another recess of the rolling mill opposite the upper assembly and below the plane (P) along which the strip (9) moves, wherein said upper and lower assemblies are to cooperate so as to apply a rolling force onto said strip (9); each of the assemblies including a working roll (1) contacting the strip (9) to be rolled and being supported by supporting cylinders (2) which are in turn supported by bearing cylinders (3) which are in turn supported by rows of bearing rollers (4); each row of bearing rollers (4) including a plurality of bearing rollers (4) mounted on a single roller-supporting axle (41); and at least one row of bearing rollers (4) of the upper assembly being actuated by a plurality of bearing-roller actuators (42) in a direction substantially perpendicular to the plane (P) along which the strip (9) moves, characterized in that: each bearing-roller actuator (42) is capable of applying a local force, along said direction substantially perpendicular to the plane along which the strip moves, directly onto the roller-supporting axle (41) of said row of rolls; in that the number of bearing-roller actuators (42) capable of applying said local force onto the supporting axle of a single row of bearing rollers is at least equal to the number of bearing rollers (4) of said row; and in that it comprises a control device (8) capable of controlling each of the actuators (42) such that the sum of the local forces applied by each of the actuators of the rolling mill is substantially equal to said rolling force.
B21B 13/14 - Cages de laminoirs, c.-à-d. ensembles composés d'un châssis, de cylindres et d’accessoires ayant des dispositifs de contre-pression agissant sur les cylindres pour les empêcher de ployer sous l'effort
B21B 29/00 - Dispositif de contre-pression agissant sur les cylindres pour les empêcher de ployer sous l'effort, p. ex. cylindres d'appui
B21B 37/16 - Commande de l'épaisseur, de la largeur, du diamètre ou d'autres dimensions transversales
B21B 37/30 - Commande de la planéité ou du profil pendant le laminage de bandes, de feuilles ou de tôles utilisant une commande du bombé des cylindres
3.
EQUIPMENT AND METHOD FOR CHANGING CYLINDERS AND/OR CLUSTERS OF A ROLL STAND; LOCKING AND CLAMPING SYSTEM; AND ROLL STAND COMPRISING SUCH SYSTEMS
The present invention relates to disassembly equipment and to a method for changing at least one cylinder and/or a cluster of a laterally supported six-high roll stand, said disassembly equipment including: a handling frame (1), including positioning and moving means for moving and positioning same; a mobile shuttle (2) capable of moving over said frame (1), characterized in that said shuttle (2) includes an extraction device (26) which can be moved by a moving member and which can disassemble the roll stand or mount a cluster and/or a lateral supporting cylinder thereon, said extraction device (26) including an upper crossbeam (265) rigidly connected, via a movable strut (267), to a lower crossbeam (266), each of said crossbeams having, at each of the ends thereof, a movable gripping plate (261) including at least one locking bolt (262), the gripping plates (261) of a single crossbeam being intended to grip at least one cluster and/or at least one lateral supporting cylinder by actuating said locking bolt (262).
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 13/02 - Cages de laminoirs, c.-à-d. ensembles composés d'un châssis, de cylindres et d’accessoires dont les axes des cylindres sont disposés horizontalement
The present invention relates to a device for inspecting a moving metal strip, including: a first electromagnetic acoustic transducer (EMAT) (2) including a first ultrasonic-wave emitter, said waves being emitted from the emitter so as to be incident on a first edge of a surface of the strip, wherein the emitter is not in contact with the strip; a second electromagnetic acoustic transducer (EMAT) (3a) including an ultrasonic-wave receiver, the wave being received by means of the emergence thereof from an area of the surface of the strip toward the receiver, wherein the receiver is not in contact with the strip; and a processing unit coupled to the second electromagnetic acoustic transducer (EMAT) so as to provide at least one inspection criterion using at least one signature of the ultrasonic waves measured at the second electromagnetic acoustic transducer (EMAT), characterized in that the area is located on the strip such that a wave path between the first edge of the strip and said area is aligned in a linear direction and is mainly transverse to the moving direction of the strip.
The present invention proposes a method and a device (C1) for controlling a thermal cycle of a weld to join one end of a first strip to another end of a second strip, suited to a joining machine (M1) of a strip treatment plant, said control device (C1) comprising: - connection means (C15) intended to connect said control device (C1) to a central automation system (A1) of said strip treatment plant and to said joining machine (M1) respectively, so as respectively to allow an exchange of at least one strip data item and an exchange of at least one operating data item; - a computer (C11) capable of computing, from said strip and operating data items, at least one thermal parameter of said weld; - weld control and characterization means (C14) capable of controlling said welding as a function of said thermal parameter.
B23K 31/02 - 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 relatifs au brasage ou au soudage
B23K 31/12 - 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 relatifs à la recherche des propriétés, p. ex. de soudabilité, des matériaux
B23K 9/025 - Soudage de joints continusSupportsPièces rapportées pour des joints rectilignes
B23K 11/00 - Soudage par résistanceSectionnement par chauffage par résistance
B23K 26/26 - Soudage de joints continus rectilignes
B21B 15/00 - Systèmes permettant d'effectuer des opérations auxiliaires pour le travail des métaux, spécialement combinés, disposés ou adaptés pour être associés aux laminoirs
B21C 51/00 - Dispositifs de mesure, de calibrage, d'indication, de comptage ou de marquage, spécialement conçus pour être utilisés dans la production ou la manipulation des matériaux concernés par les sous-classes
B21C 37/02 - Fabrication de tôles, barres, fils, tubes ou profilés métalliques ou de produits semi-finis similaires, non prévue ailleursFabrication de tubes de forme particulière des tôles
6.
METHOD AND INSTALLATION FOR ULTRASOUND INSPECTION OF BUTT-WELDING OF TWO TRANSVERSE ENDS OF TWO METAL STRIPS
The present invention describes a method of inspecting butt-welding (1c) of two transverse ends of two metal strips (1a, 1b), said ends being respectively brought together and held between a first and a second jaw (2a, 2b) thus disposed along each of the transverse ends, characterized in that - the first and the second jaws exhibit at least a spacing such that a gap (54, 55) is formed so as to allow through a first channel (52) for transmitting incident waves capable of generating ultrasound waves on a surface of the first strip and to allow through a second channel (61) for transmitting emergent waves coming out on the surface of the second strip; - the incident waves of the first channel are generated by means of laser pulses under a regime at least designed for an implementation of a third channel of ultrasound waves generated on the surface of the first strip, passing through the weld and emerging into the second channel; - on the basis of a step (7) of analyzing the regime related to the pulses and of at least one measurement of a signature of a vibratory state of the surface of the second strip upon the emergence of the ultrasound waves into the second channel, weld inspection characteristics are extracted for identification. An installation allowing the implementation of this method of inspection is also proposed.
B23K 37/04 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe pour maintenir ou mettre en position les pièces
7.
MACHINE FOR JOINING THE ENDS OF STEEL STRIPS WHICH MACHINE IS SUITED TO THE INDUCTION HEAT TREATMENT OF JOINING WELDS
The present invention relates to a joining machine intended for joining the ends of successive strips (11, 12) in a strip treatment installation, said joining machine comprising the device that welds a first end of a strip (11) to a second end of another strip (12), two pairs of respectively symmetrically arranged clamping jaws (21, 22, 31, 32), a first pair of clamping jaws (21, 31) comprising a first upper clamping jaw (21) and a first lower clamping jaw (31) which are capable of gripping said first end of strip (11), and a second pair of clamping jaws (22, 32) comprising a second upper clamping jaw (22) and a second lower clamping jaw (32) which are capable of gripping said second end of strip (12), said clamping jaws (21, 22, 31, 32) being intended to hold and to position said first end of strip (11) facing said second end of strip (12) so that said ends of strip (11, 12) can be welded together, characterized in that at least two clamping jaws (21, 22, 31, 32) of said two pairs of clamping jaws each comprise a part (222, 322, 212, 312) capable of contacting one of said ends of strip (11) that is intended to be welded to another end of strip (12), said part (222, 322, 212, 312) being characterized by a geometry and at least one constituent material each of which is able to reduce the strength of the eddy currents likely to be created in said clamping jaw as a result of electromagnetic induction.
B23K 26/26 - Soudage de joints continus rectilignes
B23K 26/42 - Traitement préliminaire; Opérations ou appareillage auxiliaires (B23K 26/16 a priorité);;
B23K 31/02 - 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 relatifs au brasage ou au soudage
The present invention relates to a roll stand, including two working rollers (1) capable of surrounding a strip to be rolled, two intermediate rollers (2), two bearing rollers (3), and at least one side bearing member (7) capable of laterally supporting said working roller (1); the invention also relates to a method for operating a roll stand, said roll stand being characterized in that at least one camber block (9) for cambering said intermediate rollers (2) is capable of vertical movement relative to the posts (6) of the roll stand and of supporting said side bearing member (7).
B21B 13/14 - Cages de laminoirs, c.-à-d. ensembles composés d'un châssis, de cylindres et d’accessoires ayant des dispositifs de contre-pression agissant sur les cylindres pour les empêcher de ployer sous l'effort
9.
EQUIPMENT AND METHOD FOR PREHEATING A CONTINUOUSLY MOVING STEEL STRIP
The invention relates to equipment and a method for preheating a continuously moving steel strip, in particular before feeding same into a continuous annealing or hot-dip galvanizing furnace. The preheating equipment involves the continuous movement of the steel strip in a preheating chamber including a preheating circuit consisting of at least one preheating tube, the inner surface of which is in contact with externally-recovered burnt gases (e.g. from the furnace). A portion of the outer surface of the preheating tube is arranged directly opposite a surface of the strip in order to provide a first preheating mode by irradiating heat onto the strip and the walls of the chamber, and a second preheating mode, mainly by means of convection, of a gas constituting a controlled atmosphere in the preheating chamber.
F27B 9/28 - Fours dans lesquels la charge est déplacée mécaniquement, p. ex. du type tunnel Fours similaires dans lesquels la charge se déplace par gravité pour traiter des longueurs ininterrompues du matériau travaillé
F27D 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
C21D 9/56 - Fours continus pour bandes ou fils métalliques
F23C 3/00 - Appareils à combustion caractérisés par la forme de la chambre de combustion
10.
METHOD FOR RESTORING A PORTION OF A METAL BODY AND EQUIPMENT FOR IMPLEMENTING SAME
The invention relates to a method and to an equipment for restoring a portion (11) of a metal body (1), said equipment including: an anode; a cathode; a current generator (7) for electrolysis between the cathode and the anode that can be submerged into an electrolytic solution (5); and characterized by at least one removable element (2) rigidly connectable to and complementary with the metal body (1) so as to form together with at least said portion (11) at least one sealed electrolysis pan (5a) for said electrolytic solution (5).
The invention relates to a machine for levelling a strip of material, comprising: a lower stationary back plate (1) from which extend a plurality of vertical beams (2a, 2b) located on either side of a longitudinal axis along which the strip of material travels; a lower stationary levelling chassis (5b) which, during the operation of the levelling machine, rests on the stationary base (1); and an upper levelling chassis (5a), each chassis comprising a plurality of rollers (51a, 51b) spaced apart from one another and rotatably mounted in bearings (52) having axes perpendicular to the longitudinal axis (P) along which the material moves. The invention is characterised in that the levelling machine also comprises: an upper stationary back plate (11) solidly connected to the vertical beams (2a, 2b) and rigidly secured to the upper end of each beam (2a, 2b); and moving coupling means (9) for coupling the upper levelling chassis (5a) to the upper back plate (11), allowing the movement of the upper levelling chassis. The invention also includes means (10) allowing the vertical translational movement of the upper levelling chassis (5a) in relation to the upper stationary back plate (11) between a rest position in which the rollers (51a) of the upper levelling chassis (5a) are moved away from the rollers (51b) of the lower levelling chassis (5b) and a levelling position in which the rollers of the upper levelling chassis are moved towards the rollers of the lower levelling chassis so that the strip is forced to travel along an undulating path.
B21D 1/02 - Redressage, remise en forme ou élimination des distorsions locales des tôles ou d'objets déterminés faits à partir de tôlesÉtirage des feuilles métalliques combiné avec le laminage au moyen de rouleaux matriceurs
B21D 37/12 - Équipements particuliers de guidageAménagements particuliers pour l'interconnexion ou la coopération des matrices
12.
DEVICE FOR SUPPLYING HYDRAULIC FLUID TO A LEVELLING UNIT
The invention relates to a device for supplying hydraulic fluid to a levelling unit, in which a product to be levelled passes between the interlocking levelling rollers (51, 61) of a roller leveller (P), comprising: a rigid structure that allows an upper levelling chassis (6) to move in relation to a lower levelling chassis (5), each chassis being provided with a plurality of levelling rollers (51, 61) that can come into direct contact with the product to be levelled; and a hydraulic system responsible for ensuring, controlling and ordering at least the movement of the chassis (5, 6). The invention is characterised in that an upper sub-divided chassis beam (9), intended to be disposed above the rigid structure, can be used to house a hydraulic fluid that supplies the hydraulic system of the levelling unit.
B21D 1/02 - Redressage, remise en forme ou élimination des distorsions locales des tôles ou d'objets déterminés faits à partir de tôlesÉtirage des feuilles métalliques combiné avec le laminage au moyen de rouleaux matriceurs
The present invention relates to a method and device for adjusting an offset (O) of a pair of working rolls (2, 2') relative to a pair of support rolls (3, 3') in rolling equipment, said offset (O) being defined in that a plane (P') containing the axes of rotation of said working rolls (2, 2') is offset relative to a plane (P) which is perpendicular to the traveling plane of a strip (1) to be rolled and through which the axes of said support rolls (3, 3') of said working rolls (2, 2') pass, characterized in that the device includes: a module (8) for identifying rolling parameters; a module (9) for determining, from said rolling parameters, at least one first offset value (O) enabling a reduction in the stresses parallel to a traveling plane of a strip (1) on the working rolls (2, 2'); an offset controller (10) for maintaining said offset at said first offset value throughout the duration of a rolling program, unless at least one other offset value has been predetermined.
B21B 13/14 - Cages de laminoirs, c.-à-d. ensembles composés d'un châssis, de cylindres et d’accessoires ayant des dispositifs de contre-pression agissant sur les cylindres pour les empêcher de ployer sous l'effort
B21B 37/00 - Dispositifs ou procédés de commande spécialement adaptés aux laminoirs ou aux produits laminés
14.
METHOD AND DEVICE FOR THE SPECTRAL ANALYSIS OF A METAL COATING LAYER DEPOSITED ON THE SURFACE OF A STEEL STRIP
The present invention relates to a method for the spectral analysis of a metal coating layer deposited on the surface of a steel strip (1), characterised by the following steps: said strip is moved along an arc of the outer surface (813) of a rotating roller (8) with a cylindrical wall guiding the strip by contact; a so-called ablation laser beam is guided into an internal cavity of the cylindrical wall in order to be placed in optical incidence under a normal axis (41) on the outer surface of the roller on a targeted contact point (11) of the strip and the roller, said beam passing through the wall via a wall opening (811), which is transparent to the beam; a plasma spectral emission distribution from the laser ablation to the contact point is collected by optical feedback in the direction of the normal axis (41) on the outer surface of the roller and through the opening in order to be guided towards a spectral measurement unit; and the normal axis on the outer surface for the optical incidence and feedback is placed in synchronous rotation with the roller. The invention also relates to a device with a plurality of embodiments for implementing the method of the invention, as well as to the advantageous uses thereof.
G01N 21/89 - Recherche de la présence de criques, de défauts ou de souillures dans un matériau mobile, p. ex. du papier, des textiles
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
G01N 21/71 - Systèmes dans lesquels le matériau analysé est excité de façon à ce qu'il émette de la lumière ou qu'il produise un changement de la longueur d'onde de la lumière incidente excité thermiquement
G01B 11/06 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer la longueur, la largeur ou l'épaisseur pour mesurer l'épaisseur
15.
DEVICE FOR TURNING OVER A FLATTENING ELEMENT, AND FLATTENING ELEMENT ENGAGING WITH SAID DEVICE
The invention relates to a device for turning over a flattening element (20), the flattening element comprising a plurality of cylinders (43) spaced apart from each other and rotatably mounted on a frame (44) and means (22) for securing the same to the turning-over device (10), the turning-over device being characterised in that it comprises: two uprights (12) extending vertically from a base (14), supporting and securing means (16) for the flattening element engaging with the securing means (22) of the flattening element (20), the supporting and securing means (16) being arranged between the uprights (12), means (19) for rotating the supporting and securing means (16) about a horizontal axis between a first position in which, when the flattening element (20) is connected to the turning-over device (10), the cylinders (43) of the flattening element (20) are oriented downward, and a second position in which, when the flattening element (20) is connected to the turning-over device (10), the cylinders (43) of the flattening element (20) are oriented upward, and driving means (18) for vertically translating the supporting and securing means (16), each translation means (18) being connected to one of the uprights (12).
B21D 1/02 - Redressage, remise en forme ou élimination des distorsions locales des tôles ou d'objets déterminés faits à partir de tôlesÉtirage des feuilles métalliques combiné avec le laminage au moyen de rouleaux matriceurs
The invention relates to a machine for levelling a strip of material (M), comprising: a fixed supporting frame (20); an upper levelling device (28) and a lower levelling device (30), each levelling device forming a cassette comprising a plurality of separated rollers (34, 36), rotatably mounted on a frame (38, 40) of a means (47) for rotating the rollers (34, 36) connected to at least some of the rollers (34, 36) by an extender (44, 46), each extender (44, 46) having one end provided with a removable coupling member (48, 50) with one end (52, 53) for rotating the roller (34, 36), and a means (101, 102, 103) for locking each removable coupling member (48, 50) by clamping, wherein the means for locking by clamping (101, 102, 103) comprises a means (108, 109, 1013, 1014) suitable for translatably moving the removable coupling members (48, 50) in the direction of travel of the material (M) and in the opposite direction.
B21D 1/02 - Redressage, remise en forme ou élimination des distorsions locales des tôles ou d'objets déterminés faits à partir de tôlesÉtirage des feuilles métalliques combiné avec le laminage au moyen de rouleaux matriceurs
The invention relates to a spraying method and device for a plant for rolling a strip (1), said plant comprising at least one rolling stand, said device including: a pair of working rolls (2a, 2b) between which the strip (1) runs; a plane (P) perpendicular to the running direction of the strip; at least one pair of supporting rolls (3a, 3b) for said working rolls (2a, 2b); two pairs of bearing rolls (5a, 5'a, 5b, 5'b), each of said pairs having the rolls (5a, 5'a, 5b, 5'b) thereof substantially symmetrically arranged on either side of the working rolls (2a, 2b) in a plane substantially parallel to the strip so as to transfer, to said working rolls (2a, 2b), a force for maintaining said working rolls in a predetermined position relative to the supporting roll; a support for said bearing rolls (5a, 5'a, 5b, 5'b) in the form of two rows including a plurality of bearing rollers (6) mounted side by side; at least one nozzle system for spraying at least a portion of the strip and at least a portion of said rolls, characterised in that at least one of the nozzle systems is capable of directly spraying at least a portion of the working rolls on either side of said plane which is perpendicular to the running direction of the strip.
Method for assembling a machine for converting a metal strip and assembled converting machine, the latter comprising: at least one unwinding device (4) at the start of the conversion and at least one winding device (14) at the end of the conversion; at least one strip conversion module (5-11); at least one strip gathering device (13); at least one central control system (15); linking units (3) for linking the aforementioned components successively and linearly, each component comprising a control unit for detecting the type of connection and configuring said connection; and said components being able to communicate and interact with each other by means of said linking and control units.
B23Q 37/00 - Machines ou combinaisons de machines pour le travail des métaux réalisées à partir d'unités conçues de telle façon que quelques-unes au moins de ces unités soient en mesure de tenir lieu d'éléments de différentes machines ou combinaisonsCes unités tant que la caractéristique d'interchangeabilité en est importante
B23P 21/00 - Machines pour l'assemblage de nombreuses pièces différentes destinées à composer des ensembles, avec ou sans usinage de ces pièces avant ou après leur assemblage, p. ex. à commande programmée
A21B 1/24 - Fours chauffés par des agents circulant à l'intérieur de ceux-ci
B21C 49/00 - Dispositifs pour accumuler temporairement les matériaux
19.
METHOD AND DEVICE FOR MEASURING A CHEMICAL COMPOSITION OF A LIQUID METAL SUITABLE FOR COATING A STEEL STRIP
Method and device for measuring a chemical composition of a liquid metal suitable for coating a steel strip. The present invention describes a method for measuring a chemical composition of a liquid metal (1) suitable for coating a steel strip for which the liquid metal is formed continuously in a first cavity (2), and the composition of said liquid metal is measured on a direct measurement surface (6) thereof, for which a specimen of the liquid metal reaching the measurement surface is heated (at 7) to a chosen temperature so as to isolate principally iron-based impurities from said measurement surface. Several embodiments of devices suitable for implementing said method according to the invention are also presented.
C23C 20/00 - Revêtement chimique par décomposition soit de composés solides, soit de suspensions des composés constituant le revêtement, ne laissant pas de produits de réaction du matériau de la surface dans le revêtement
G01N 21/71 - Systèmes dans lesquels le matériau analysé est excité de façon à ce qu'il émette de la lumière ou qu'il produise un changement de la longueur d'onde de la lumière incidente excité thermiquement
20.
METHOD AND DEVICE FOR CONTROLLING THE INTRODUCTION OF SEVERAL METALS INTO A CAVITY DESIGNED TO MELT SAID METALS
The present invention describes a method and a device for controlling the introduction of several metals into a cavity designed to melt said metals in the form of ingots. In particular, the method according to the invention is designed to control the introduction of several metals into a cavity (2, 3) for melting said metals so as to dip-coat a steel strip (1) with said metals in liquid metal form, whereby a first metal is introduced in the form of at least a first ingot (10) having a high content of said first metal and a second metal is introduced in the form of at least a second ingot (11) consisting of an alloy of the first metal and the second metal, characterized in that the second metal content of the second ingot is chosen from a range of significant contents for ensuring an intended overall flowrate for combined melting of the ingots, the range of significant contents being chosen in a limited interval of sequentially increasing values so as to minimize differences between melting points of the ingots.
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
21.
METHOD AND DEVICE FOR HONING METAL STRIP OF ARBITRARY WIDTH IN CONTINUOUS MOTION
The present invention describes a method and device for honing a metal strip of arbitrary width in continuous motion, allowing honing that is free of artefacts and automated of a suspended portion of at least one side of a metal strip. The said device comprises: a means of vertically positioning an abrasive element at the surface of the said strip, a means of horizontally moving the abrasive element transversely to the motion of the said strip, the said means being couplable to the vertical-positioning means and able to move back and forth from one edge of the strip to the other, a first means allowing uniform pressure to be applied to press the abrasive element against the metal strip, and is characterized in that the said first means allows a uniform pressure to be applied to a suspended portion of strip in motion and can be coupled to a second means that allows the said pressure to be adjusted according to the longitudinal tension of the suspended portion of strip.
B24B 7/00 - Machines ou dispositifs pour meuler les surfaces planes des pièces, y compris ceux pour le polissage des surfaces planes en verreAccessoires à cet effet
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
22.
FURNACE FOR A CONTINUOUSLY-RUNNING STEEL STRIP THERMAL PROCESSING PLANT, AND ASSOCIATED METHOD
The invention relates to a furnace for the thermal processing of a continuously-running rolled steel strip, said furnace comprising a preheating section, a temperature-maintaining section and a cooling section (26). The cooling section (26) sequentially comprises, along the path of the strip (2), in the running direction thereof and in the vicinity of each of the surfaces of the strip: a first quenching device (62) that does not oxidise the strip and has an adjustable transfer power; and a second quenching device (64) that oxidises the strip and has an adjustable transfer power; characterised in that the furnace comprises a control and actuation means (65) for adjusting the transfer power of each of the first and second quenching devices based on a desired cooling rate and on the size characteristics of the strip.
Device and method for setting up an installation for the conversion of steel strip as a function of an arbitrary thickness of the said steel strip. The present invention describes a device and a method for setting up an installation for converting, in continuous progression, (unwound) steel strip of arbitrary thickness making use of components that are simple to add/use and in any event, of components that partially already exist in the surroundings of the installation. The said device comprises: a module that measures a thickness of the said steel strip; a signal for setting up the installation, originating from the measurement module, the said signal comprising information regarding the measured thickness of the strip and acting proactively, in particular, for example, via a member that controls the operation of the installation, on the setup of the installation, or even from several modules arranged in sequence in the installation, and for which: the conversion installation is arranged according to the progression of the strip, downstream of the measurement module; the measurement module can be coupled to a strip guide means positioned in the upstream part of the conversion installation, the said measurement means being coupled to at least one of the mechanical elements of the said guide means.
The present invention describes a method for the electrolytic tinning of a continuously running steel strip (1) in an electrodeposition unit (3) with an insoluble anode (23) in an electrolyte and having, in line, an electrodissolution reactor (6) intended to recharge the electrolyte with tin ions by selective separation through an electrodialysis or electrolysis membrane (10) which divides said electrodissolution reactor (6) into an anodic compartment (6b) comprising a first electrode (122b) connected to the positive terminal of an electric current supply circuit (12) and a cathodic compartment (6a) comprising a second electrode (121a) connected to the negative terminal of the same electric circuit, and for which a control member of the electrodissolution reactor engages a first change in the polarity of the electric current supply of each of the two electrodes, the control member ensuring, in a manner adjoining the first change, a second change of the circulation of the electrolyte between each of the two compartments of the electrodissolution reactor and the electrodeposition unit, the adjoining and periodic changes in the polarity of the electric current supply of the electrodissolution unit and of the circulation of the electrolyte returning to the electrodeposition unit ensure a continuous withdrawal of the electrolyte via alternating cycles from one or the other of the two compartments by attributing to said compartment an anodic electrodissolution function by means of a soluble electrode, two alternating cycles of continuous withdrawal are defined by similar durations. An installation that implements this electrolytic tinning method is also presented. A major objective of the invention is for the continuity in the recharging of the electrolyte to be effectively ensured.
Method and installation for electrolytic tinning of a continuously running steel strip in an electrodeposition unit. The present invention describes a method for the electrolytic tinning of a continuously running steel strip (1) in an electrodeposition unit (3) with an insoluble anode (23) in an electrolyte and having, in line, an electrodissolution reactor (6) intended to recharge the electrolyte with tin ions by selective separation through an electrodialysis or electrolysis membrane (10) which divides said electrodissolution reactor (6) into an anodic compartment (6b) comprising a first electrode (122b) connected to the positive terminal of an electric current supply circuit (12) and a cathodic compartment (6a) comprising a second electrode (121a) connected to the negative terminal of the same electric circuit, and for which a control member of the electrodissolution reactor engages a first change in the polarity of the electric current supply of each of the two electrodes, the control member ensuring, in a manner adjoining the first change, a second change of the circulation of the electrolyte between each of the two compartments of the electrodissolution reactor and the electrodeposition unit, the adjoining and periodic changes in the polarity of the electric current supply of the electrodissolution unit and of the circulation of the electrolyte returning to the electrodeposition unit ensure a continuous withdrawal of the electrolyte via alternating cycles from one or the other of the two compartments by attributing to said compartment an anodic electrodissolution function by means of a soluble electrode, two alternating cycles of continuous withdrawal are defined by similar durations. An installation that implements this electrolytic tinning method is also presented. A major objective of the invention is for the continuity in the recharging of the electrolyte to be effectively ensured.
LE CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (France)
L'INSTITUT POLYTECHNIQUE DE GRENOBLE (France)
Inventeur(s)
Grenier, Benjamin
Hardy, Jean-Jacques
Ernst, Roland
Fautrelle, Yves
Abrégé
The present invention relates to a method and to a device for draining liquid coating metal, at the outlet of a tempering metal coating tank, from the two sides of a longitudinally continuously running steel strip. The method of the invention particularly comprises transferring the strip coated with liquid coating metal, as it runs at the tank outlet, from a region not subjected to a magnetic field to another region subjected to a static magnetic field generated between the poles of magnetic members arranged opposite each other on either side of the strip and having field lines, or at least a main shell of said field lines, intersecting with said strip over at least one minimum longitudinal extent so that the liquid coating metal is correlatively subjected to a magnetic field variation generating on said liquid metal a force opposite to the running direction thereof with the strip. Due to the low field variation, this magnetic braking effect generates little Foucault current in the strip. The power radiated in order to reach an efficient draining effect of the liquid film is thus very low and the heating of the strip is very advantageously negligible, amongst other advantages.
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 2/24 - Élimination de l'excès des revêtements fondusCommande ou régulation de l'épaisseur du revêtement en utilisant des champs magnétiques ou électriques
27.
METHOD AND DEVICE FOR ADJUSTING THE COOLING AND ENERGY RECOVERY OF A STEEL STRIP IN AN ANNEALING OR GALVANISATION PHASE
The invention relates to a method and a device for adjusting the cooling of a steel strip in an annealing or galvanisation phase. The device is suitable for the forced cooling of a steel strip (B) continuously running in a plant adapted for the continuous annealing or the continuous tempering galvanisation, and comprises: at least one exchange member (51, 5142) for transferring the heat of the steel strip to a cooling water and including an outlet (51422) for the cooling water thus heated up; at least one cooling unit (52) comprising a sealed enclosure (521) connected to the outlet (51422) of the exchange member (5142) and including at least one outlet (5211) to a Venturi effect device such as a vapour outlet ejector (522), and in which the cooling water itself is subjected to a vacuum-vaporisation cooling; and an auxiliary outlet (5213) of the sealed enclosure (521) connected to an inlet (51421) of the exchange member (51, 5142).
The invention relates to a device for installing at least one roller in a liquid zinc bath in a galvanising line used for the galvanisation of a continuously-moving steel strip (B), comprising a beam (117) to which a first pair of arms (1132) is attached, said first pair of arms (1132) bearing a bottom roller (113). The aforementioned bottom roller is intended to be submerged in the liquid zinc bath (112) towards a bottom roller operation position (P1), relative to the naturally submerged position (P2) of the bottom roller, by means of a movement provided together with a first cylindrical bearing (1171) supporting the first pair of arms, said first cylindrical bearing (1171) being attached to each of the two ends of the beam (117). The invention is characterised by: (a) a second cylindrical bearing (1172) attached to each of the two ends of the beam (117) and separate from the first cylindrical bearing (1171) on the same beam end section (117); and (b) a push device (11614) which interacts with at least one of the first and second cylindrical bearings (1171, 1172) such that, in the operation position, the first and second cylindrical bearings (1171, 1172) are maintained in a single predetermined plane and such that the first cylindrical bearing (1171) is disposed under the second cylindrical bearing (1172) at a minimum supporting height along said vertical plane.
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
The present invention describes a device for cleaning a roll (1) of a steel strip conversion plant, which device is designed to move parallel to an axis (5) of said roll (1), comprising: at least an even number N (> 0) of parallel spray nozzles, said nozzles being perpendicular to the axis (5) of the roll, a first number N/2 of the nozzles (311, 312) being fixed to a first arm (31) of a supporting member (3) and a second number N/2 of nozzles (321, 322) being fixed to a second arm (32) of the supporting member (3), said supporting member (3) being coupled to an actuator (4), the actuator (4) having a travel of at least 1/N of the length of the roll (1).
The invention relates to a method for changing rollers in a roll stand (C) adapted for bearing at least one working roller for a continuously-running steel-strip roll mill, wherein said stand (C) is part of a plurality (N) of roll stands arranged in series along the roll mill in the continuous running direction (D), wherein a rolling standby function in a free clamping position of the roller (s) is allocated to at least one dedicated stand (CA) among the plurality (N) of stands, origin setpoint values controlling an adjustment of the roller clamping are individually allocated to the other stands in an active rolling position, and in the case of a roller change when passing into the free clamping position of the cage (C), the origin setpoint value of said cage (C) and the origin setpoint values of the cages remaining in an active rolling position are redistributed individually among each of said cages, including the dedicated cage (CA).
Device for lopping a steel strip on the fly as it moves comprising two rotary blade-carrying drums between which the strip moves, the drums rotating in different directions each at the same peripheral drum speed equal to the speed of the strip, characterized in that the lopping device comprises at least a first rotary support element (4a), the first element applying a first normal force to the first drum, at least a second rotary support element (4b), the second element applying a second normal force to the second drum, the first (4a) and the second (4b) element pressing radially against the first and second drums respectively and comprising a relief groove (41) of a width, depth and inclination which are sized in such a way that a lopping blade (3), situated at the periphery of the first (2a) and of the second (2b) drum respectively and having a cutting direction that is radial to each drum, can freely enter the groove on each revolution of the drum.
The present invention relates to a device and a method for positioning two baffles in the vicinity of each of two edges of a moving steel strip exiting a continuous line for dip-galvanising a strip in a liquid galvanising product such as liquid zinc. Said baffles control turbulence to the side of the two strip edges. Each of the wipers is supported by a beam that is also longer than the strip width. The baffles are arranged on an arm having a width greater than the strip width, said arm having two movable ends, wherein each movable end adjacent to a strip edge is coupled, via two synchronisation devices, to each of the respective adjacent ends of the two beams so that the movable end is instantly centred between the two adjacent ends.
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
33.
SYSTEM AND METHOD FOR GUIDING A GALVANISING PRODUCT WIPING DEVICE
The invention relates to a system for guiding a mobile carriage in a frame, wherein: the frame comprises three parallel linear-guiding tracks including a first track extending centrally on the frame and second and third tracks arranged laterally relative to the first track; the carriage has at least two rotation axles, a first axle driving at least a first wheel in the first guiding track and a second axle driving at least a second wheel and at least a third wheel, respectively, in the second and third guiding tracks; and the two rotation axles are perpendicular. The invention also relates to an associated method. A major aim of the invention is to enable the end of a mobile beam, such as a beam carrying a device for wiping a galvanising product off a steel strip, to perform a guided movement with a high degree of freedom while minimising mechanical stresses.
C23C 2/16 - Élimination de l'excès des revêtements fondusCommande ou régulation de l'épaisseur du revêtement en utilisant des fluides sous pression, p. ex. par des lames d'air
The present invention relates to a method of drying and/or curing an organic coating on a continuously running metal strip (2), which comprises the heating of the strip (2) by electromagnetic induction in a tunnel oven (1), comprising an enclosure (11) with hot internal walls (12), and the heating of the enclosure (11). According to the invention, the heating of the strip (2) by electromagnetic induction is coupled with heating by infrared radiation and heating by convection by means of a combustion gas, and the heating of the enclosure (11) of the oven (1) is performed by convection by means of the same combustion gas as that used for heating said strip (2) by convection. The present invention also relates to a facility (1) for implementing the method of the invention.
F26B 3/28 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par radiation, p. ex. du soleil
F26B 3/34 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par dégagement de chaleur dans le matériau ou les objets à sécher utilisant des effets électriques
F26B 13/10 - Aménagements pour l'alimentation, le chauffage ou la tenue du matériauCommande du mouvement, de la tension ou de la position du matériau
B05D 3/02 - Traitement préalable des surfaces sur lesquelles des liquides ou d'autres matériaux fluides doivent être appliquésTraitement ultérieur des revêtements appliqués, p. ex. traitement intermédiaire d'un revêtement déjà appliqué, pour préparer les applications ultérieures de liquides ou d'autres matériaux fluides par cuisson
B05D 7/14 - Procédés, autres que le flocage, spécialement adaptés pour appliquer des liquides ou d'autres matériaux fluides, à des surfaces particulières, ou pour appliquer des liquides ou d'autres matériaux fluides particuliers à du métal, p. ex. à des carrosseries de voiture
35.
DEVICE AND METHOD FOR WINDING SHEARED WASTE FROM STEEL BAND EDGES
The invention relates to a device and method for winding sheared waste obtained from the edges of continuously moving steel bands, including: an edge shear (CR) which diverts the edges into a chute (G1) that conveys same to an accumulation chamber (2) in which the edge waste is stored in the form of a ball (1); a bundling drum (7) including a winding axis located between two side faces of said drum; and a handling means (4) designed to direct the end of the ball from the accumulation chamber to the winding axis in order to initiate the winding of the ball. According to the invention, the device also includes a winding mandrel (6) which can be inserted along the winding axis of the drum through a central opening in one of the side faces of the drum. In mandrel insertion mode, a counter pressure element (722, 723) engages coaxially with the mandrel and the end of the ball is clamped between said counter pressure element and mandrel.
The present invention describes a measuring method and device adapted for the positioning of a wheel adapted for mash seam resistance welding for the purpose of butt-joining strips of steel on continuous processing lines, comprising the following steps: positioning a rotating roller (34) which is fastened to a movable frame (3) in a measuring position, the measuring position being vertically below a reference wheel (MS); continuously vertically lowering (A) the reference wheel (MS) so that its lower surface comes into contact with the rotating roller (34) and produces a bearing force on the roller (34); continuously moving the roller (34) in the direction of lowering (A); repeatedly measuring a distance (D2) between an index (37), which is secured to a measuring arm (33) of the frame (3), and an articulated column (32) of the frame (3) during the continuous movement; comparing the distance (D2) with a distance threshold for each of the repeated measurements until the wheel (MS) reaches a first operating position in which the distance (D2) is equal to a predefined factor of the distance threshold; and recording the first operating position as a reference point in a system for the vertical movement of the reference wheel (MS).
The invention relates to a rolling plant comprising a reversible rolling mill having two stands (2, 4). Each upright (22, 24) of the stands (2, 4) rests on a support structure (25) via a bearing surface and is fastened thereto by a rod (80) integral with the structure and cooperating with the upright via a removable fastening means (82). The plant is characterized in that the bearing surface of each upright is provided on the lower face (28, 48) of the upright, without extending beyond the lateral faces (26, 46) directed along the rolling direction (A) of the uprights, and includes a hole (64, 74) opening into a hollow housing (62, 72) provided in the upright and having an orifice opening onto a lateral face (26, 46) of the upright. The rod (80) extends through the hole and projects into the housing, and the removable fastening means (82) is placed inside the housing.
The invention relates to the pickling of continuously running steel strip and more particularly to a pickling method, which includes centralized control of all of the pickling operations, and to the apparatus (1) for implementing it.
The invention relates to a method for the hardened galvanisation of a continuously-running rolled steel strip, in which the strip is immersed in a coating tank containing a bath of a liquid metal mixture, e.g. zinc and aluminium, to be deposited on the strip, and permanently circulated between said coating tank and a preparation device, in which the temperature of the liquid mixture is deliberately lowered in order to reduce the iron solubility threshold and sufficiently high for initiating, in said preparation device, the fusion of at least one Zn-Al ingot in an amount necessary for compensating for the liquid mixture used for deposition on the strip. The device is implemented so that the circuit for circulating the liquid mixture is thermally optimised.
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
40.
PLANT FOR THE HARDENED GALVANISATION OF A STEEL STRIP
The invention relates to a plant for the hardened galvanisation of a continuously-running rolled steel strip, in which the strip is immersed in a coating tank containing a liquid metal mixture including, for example, zinc and aluminium to be deposited on the strip. The liquid mixture is permanently circulated between said coating tank and a preparation device, in which the temperature of the liquid mixture is deliberately lowered in order to reduce the iron solubility threshold and sufficiently high for initiating the fusion of at least one ingot comprising a zinc-aluminium Zn-Al alloy in a so-called fusion area of said preparation device, in an amount necessary for compensating for the liquid mixture used for deposition on the strip. According to several embodiments, the plant includes a circuit for circulating the liquid mixture that is thermally optimised.
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
41.
DEVICE FOR MEASURING GEOMETRICAL CHARACTERISTICS OF A ROLLED STRIP IN A HOT REVERSIBLE ROLLING MILL
The invention relates to a device for measuring the geometrical characteristics, in particular the thickness and the profile, of a rolled strip (1) in a hot reversible rolling mill. The device (gauge) can be used for measuring said characteristics using a C-shaped frame (81), including an X-ray transmitter (811) and receiver (812) each positioned on one of the two ends of the frame, along the entire width of a rolled strip (1) running between the transmitter (81) and the receiver. A protection structure (84) is also provided between the transmitter and the receiver in a plane parallel to the strip (1), the structure including a first oblong opening (841) along the entire width of the strip (1) and a superimposed shutter that itself comprises a second oblong opening having the same size as the first oblong opening. The shutter, based on its position, can be used on the one hand for blocking the first oblong opening (841) for preventing interference of the strip (1) with the measuring device and, on the other hand, for permitting the free flow of the X-rays through the strip in order to make a measure.
B21B 38/04 - Procédés ou dispositifs de mesure spécialement adaptés aux laminoirs, p. ex. détection de la position, inspection du produit pour mesurer l'épaisseur, la largeur, le diamètre ou d'autres dimensions transversales du produit
G01B 15/02 - Dispositions pour la mesure caractérisées par l'utilisation d'ondes électromagnétiques ou de radiations de particules, p. ex. par l'utilisation de micro-ondes, de rayons X, de rayons gamma ou d'électrons pour mesurer l'épaisseur
The invention relates to a device for rotating at least one mandrel (4a, 4b) coupled to a secondary reduction gear (10) that can in turn be coupled to a primary reduction gear (8) and supplies a torque to the mandrel, wherein: the primary reduction gear is driven by at least one driving motor (7a, 7b), the primary and secondary reduction gears (10) are mechanically similar and can be coupled via at least one torque transmission means rotated by the primary reduction gear along a rotation axis (ax), the torque transmission means (9) includes at least one coupling tube with two section ends. Furthermore, in the assembled configuration, the primary and secondary reduction gears define a unitary assembly integrally encapsulating the torque transmission means that can be removed from the unitary assembly in the permanent assembled configuration through an opening (04) of the unitary assembly formed in at least one of the walls of the primary and secondary reduction gears opposite the section ends of the torque transmission means.
The invention relates to a device for inspecting a metal strip (M), that successively comprises a processing section (A), shears (14), a coiler (2) with at least two coiling mandrels (21, 21') rotating about an axis (20) orthogonal to the running direction in order to alternatively shift each mandrel (21, 21') from a coiling start position (E1) to a coiling end position (E2), a means (4) for guiding the strip (M) after shearing towards the mandrel in the coiling start position (E1), and an inspection device (5) including means for conveying a sample (M1) collected on the strip (M) towards an inspection table (5), characterised in that, when in the coiling start position (E1), the mandrel (21) is located substantially at the level of a running plane (P) of the strip (M) downstream from the shears (14) while, when in the coiling end position (E2), the mandrel (21') is located above said running plane (P) so that the traction force (T) applied by the strip (M) is always directed downwards, and in that the sample conveying means (6) are arranged to pass above the coil (3) at any moment during the winding and independently from the diameter thereof.
B21B 38/00 - Procédés ou dispositifs de mesure spécialement adaptés aux laminoirs, p. ex. détection de la position, inspection du produit
B21C 47/24 - Manipulation des matériaux enroulés, pour les transférer vers les appareils à enrouler, les sortir de ces appareils, les mettre en position de fonctionnement dans ces appareils, ou les retirer de cette positionMoyens pour empêcher le déroulement pendant le transport
B21C 51/00 - Dispositifs de mesure, de calibrage, d'indication, de comptage ou de marquage, spécialement conçus pour être utilisés dans la production ou la manipulation des matériaux concernés par les sous-classes
B23D 33/00 - Accessoires des machines à cisailler ou des dispositifs de cisaillage
44.
EQUIPMENT AND METHOD FOR THE ELECTROLYTIC TINNING OF STEEL STRIPS USING A NON-SOLUBLE ANODE
The invention relates to an equipment (1) for the electrolytic tinning of a continuously running steel strip (2) in at least one electrodeposition tank (30) containing an acidic electrolyte. The equipment (1) further includes a tin dissolving reactor (10) and an electrodialysis cell (40) for recovering the acid produced in the electrodeposition tank (30). The present invention also relates to an electrolytic tinning method using such equipment (1).
The invention relates to a combined annealing and galvanisation line for a metal strip (1), that successively comprises an annealing station (2) with an annealing section (22), a quenching section (23), an over-ageing section (26) and a second slow-cooling section (25), and a galvanisation station (4) ending in a tempering bath. According to the invention, the galvanisation station (4) is integrated inside the annealing station (2) between the over-ageing section (26) and the second cooling section (25) and, at the output of the over-ageing section (26), the strip is directed by selective guiding means (80) either to the galvanisation station (4) and directly to the line output device (3), or directly to the second cooling section (25) and the line output device (3). The invention also relates to a particularly simple and economical method for converting an existing continuous annealing line into a combined annealing and/or galvanisation line.
B05C 3/12 - Appareillages dans lesquels un ouvrage est mis en contact avec une grande quantité de liquide ou autre matériau fluide l'ouvrage étant immergé dans le liquide ou autre matériau fluide pour traiter un ouvrage de longueur indéfinie
C21D 9/56 - Fours continus pour bandes ou fils métalliques
C23C 2/28 - Post-traitement thermique, p. ex. par traitement dans un bain d'huile
The invention relates to equipment for coating a strip product (M) by passage in a liquid-metal bath (31), that comprises means for controlling the running of the strip (M) between the metal bath (31) and a final quenching bath (35) along a continuous running line defined by a succession of deviation cylinders and including at least three portions, respectively a first portion (T1) at the inlet of the metal bath, a second portion at the outlet of the bath (31) in an ascending direction and at least a third descending portion (T3) giving into the final quenching bath (35). According to the invention, the final quenching bath (35) is located above the metal bath (31) so that the entire running line of the strip (M) between the metal bath (31) and the final quenching bath (35) occupies an area over the ground of the same magnitude as that of the metal bath (31).
B05C 3/12 - Appareillages dans lesquels un ouvrage est mis en contact avec une grande quantité de liquide ou autre matériau fluide l'ouvrage étant immergé dans le liquide ou autre matériau fluide pour traiter un ouvrage de longueur indéfinie
The method of the invention is implemented in a reversible rolling mill that comprises at least one rolling mill cage, an unwinding device and a winding/unwinding device on a so-called input side of the cage, first and second winding/unwinding devices on the opposite so-called output side of the cage, and flying shears, the strip having, on either side of an intermediate section rolled to the desired thickness, two respectively strip-head and strip-tail service lengths wound on a mandrel of the input winding/unwinding device and the first output winding/unwinding device, respectively, wherein said method comprises during the last pass actuating the rolling mill for winding the head service length on the mandrel of the first output winding/unwinding device, shearing the moving strip when the intermediate section runs in front of said flying shears, and attaching the new head end of the strip to the mandrel of the second output winding/unwinding device while carrying on the rolling operation under tension, and at the end of the last pass, shearing the running strip in order to separate the tail service length, that remains attached to the mandrel of the input winding/unwinding device, from the rest of the strip which is rolled and wound on the mandrel of the second output winding/unwinding device in order to form a coil having a required constant thickness within given tolerances on the entire length thereof.
B21B 1/36 - 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 selon un processus non continu dans des laminoirs réversibles, p. ex. avec des bobines de stockage intermédiaires pour accumuler le matériau travaillé par laminage à froid
B21C 47/04 - Enroulement ou bobinage sur ou dans des bobines ou des tambours, sans utiliser de guide mobile
B21C 47/18 - Déroulement ou dévidage des bobines ou des tambours
48.
CONTROLLED METHOD AND DEVICE FOR OXIDATION/REDUCTION OF THE SURFACE OF A STEEL STRIP RUNNING CONTINUOUSLY THROUGH A RADIANT TUBE OVEN FOR GALVANISATION THEREOF
The invention particularly relates to a method for guaranteeing the oxidation of a strip designed to prevent the selective oxidation of alloy elements of the steel in a continuous steel strip galvanising annealing furnace having a pre-heating section and a hold section and provided only with radiant tubes, the oxidation of the strip being designed to prevent the selective oxidation of elements of the steel alloy, characterised in comprising the following steps: installation of at least one modified tube capable of injecting an oxidising medium at at least one point in the oven heating section and/or at at least one point in the hold section and injection of the oxidising medium by means of the modified tube(s), the oxidising medium having a composition such that in the conditions of the temperature of the oxidising medium and the steel strip and as a function of the chemical composition of the strip said medium has a dew point which guarantees an in-depth oxidation of the alloy elements of the steel strip.
C21D 1/76 - Réglage de la composition de l'atmosphère
C21D 9/48 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles tôles embouties
C21D 9/52 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour fils métalliquesTraitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour bandes métalliques
C21D 9/56 - Fours continus pour bandes ou fils métalliques
C23C 2/02 - Pré-traitement du matériau à revêtir, p. ex. pour le revêtement de parties déterminées de la surface
F27B 9/06 - Fours dans lesquels la charge est déplacée mécaniquement, p. ex. du type tunnel Fours similaires dans lesquels la charge se déplace par gravité chauffés sans contact entre gaz de combustion et la chargeFours dans lesquels la charge est déplacée mécaniquement, p. ex. du type tunnel Fours similaires dans lesquels la charge se déplace par gravité chauffés électriquement
C21D 9/00 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet
49.
METHOD FOR OPERATING A CONTINUOUS ANNEALING OR GALVANISATION LINE FOR A METAL STRIP
The invention relates to a method for operating a continuous annealing or galvanisation line for a metal strip, comprising a section for heating by direct flame (9) with an upstream zone (10) and a downstream zone (11), the section for heating by direct flame (9) being followed by a section for heating by radiant tubes, the metal strip being indirectly hearted in the section for heating by direct flame (9). According to the invention, the heating of the metal strip is achieved in the upstream zone (10) by combustion of a mixture of atmospheric air and fuel such that the temperature of the combustion gas is between 1250°C and 1500°C, preferably close to 1350°C and in the downstream zone(11), the heating of the metal strip is achieved by combustion of a superoxygenated sub-stoichiometric mixture of air and fuel such that the temperature of the combustion gas achieved at the end of the upstream zone (10) is maintained until the end of the downstream zone (11) of the section for heating by direct flame (9).
The invention relates to a cooling device for use following the galvanisation of a strip material (M) passing through a metal galvanising bath, the device comprising a cooling cell in the shape of a hollow chamber (5) and two side regions extending between two porous surfaces, on either side of a central region along which the strip passes, a cooling gas being introduced under pressure into the porous surfaces and circulated via said surfaces along both sides of the strip and then discharged via the central region of the cooling cell (5). According to the invention, each cooling cell (5) comprises means (7) for extracting at least most of the discharged gases at the outlet of the central region of the cooling chamber (5), said extraction means being connected to pressurised means (60) in the side regions of the chamber (5) via at least one recirculation system (6), which is provided with a means (8) for cooling the extracted gases before they are introduced under pressure into the side regions of the cooling cell (5).
The present invention relates to a plant (1) for the electrolytic tinning of a steel strip (2) travelling continuously in at least one electrodeposition tank (30) containing an acid electrolyte. The plant (1) comprises, in addition, a tin-dissolving reactor (10) and an electrodialysis cell (40), that ensures the recovery of the acid produced in the electrodeposition tank (30). The present invention also relates to an electrolytic tinning process using such a plant (1).
The invention relates to a method for the electrolytic tinning of steel bands (20), using an insoluble anode (60). The invention also relates to a unit (1) for implementing same and a module (80, 800) for recovering acid from the electrolytic bath.
The invention relates to a method for the electrolytic tinning of steel bands (2), using a soluble anode (600, 6000). The invention also relates to an electrotinning unit (1) and a removable, renewable soluble anode (600, 6000) for implementing same.
The invention relates to equipment for the electrolytic tinning (1) of a continuously running steel strip (2) in at least one coating tank (30) fitted with at least one non-soluble anode (60) and containing an acidic electrolyte. The equipment (1) further includes a tin dissolution reactor (10) including a non-soluble cathode (120) and a soluble tin anode (160). According to the invention, at least one electrodialysis or electrolysis cationic membrane (140) is provided in the reactor (10) between the tin anode (160) and the cathode (120), thus defining an anodic area (1600) and a cathodic area (1200), and an electrolyte recirculation circuit connects the electrodeposition tank (30) to the anodic area (1600) of the reactor (10). The present invention also relates to an electrolytic tinning method with a non-soluble anode using said equipment (1).
In the acid pickling of metal strips, especially steel strips, the strip (B) to be pickled is fed through one or more sulphuric acid baths (6) between a pay-out reel (1) and a take-up reel (13). The pickling plant comprises, in series in the travelling direction of the strip: a strip unwinder (1); at least one pickling tank (6) containing a sulphuric acid solution; a rinsing (7)/drying (8) device; and a winder (13) for taking up the pickled strip. The gaseous and liquid effluents are collected and recycled.
The invention relates to a method for pickling hot-rolled silicon-steel strips (4) continuously moving in at least one pickling tank (20, 21, 22) containing a pickling solution (30, 31, 32). According to the invention, the pickling method comprises processing the silica formed in the pickling solution (30, 31, 32) using continuous filtration. The invention also relates to pickling equipment for implementing said method.
C23G 1/36 - Régénération des liqueurs de décapage usées
C23G 3/02 - Appareils pour nettoyer ou décaper les matériaux métalliques pour le nettoyage des fils, rubans, filaments métalliques en continu
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
57.
METHOD FOR CLEANING A ROLLING MILL ROLL AND CORRESPONDING DEVICE
The invention relates to a method for cleaning a rolling mill roll (2), comprising a cleaning step in which a nozzle operates in cleaning mode while being traversed parallel to the axis of the roll at a cleaning speed. The method is essentially characterized in that it also includes a defining step in which there is defined, on the roll (2), at least one work region bounded by a start-of-work position and an end-of-work position, and in that the cleaning step is limited to the work region. It advantageously includes a travel step in which the nozzle, operating in a mode other than cleaning mode, is traversed parallel to the roll (2) axis from an end-of-work position, and/or to a start-of-work position.
The invention particularly relates to a method for the continuous deposition of a coating on strip-type substrate, in which the thickness of the coating depends on the condition of various actuators. The method of the invention includes a first preliminary phase that includes developing a pre-setting model, a second preliminary phase that includes developing an adjustment model, an intermediate pre-setting step (16) during which the actuators are set statically, a step of measuring the thickness of the coating (21), and an adjustment step (20) during which the actuators are dynamically controlled by a predictive control based on the adjustment model in order to reduce any potential difference between the coating measured thickness and a target value of said thickness.
The invention relates to a method and a device for dismantling the straightening assemblies (1, 1') of a machine for straightening a flat object, comprising a lower assembly (1') and an upper assembly (1) each forming a removable cartridge. According to the invention, the two straightening assemblies (1, 1') are removed from the frame separately as follows: the couplings (14') of the lower extension bars (36') are locked at a first level (H1), the lower cartridge (1') is removed by axially sliding same onto a withdrawal platform (4), and the lower cartridge (1') is conveyed into a maintenance position; a dismantling carriage (5) supporting the upper carriage (1) is deposited on the withdrawal platform (4)and inserted into the frame (3); the couplings (14) of the upper extension bars (36) are locked at a second level (H2), the upper carriage (1) is unlocked, the pressure frame (34) is raised and the carriage (5) supporting the upper carriage (1) is withdrawn onto the withdrawal platform (4), whereafter the upper carriage (1) is conveyed into a maintenance position.
B21D 1/02 - Redressage, remise en forme ou élimination des distorsions locales des tôles ou d'objets déterminés faits à partir de tôlesÉtirage des feuilles métalliques combiné avec le laminage au moyen de rouleaux matriceurs
The invention relates to a device for guiding a ribbon (1) through a liquid (M) contained in a trough (11), comprising an immersed deflector roller (2) mounted rotatably about an axis (20) on two aligned supporting shafts (3) extending through the two respective side walls (14) of the trough (11), and each rotating in a centring bearing (4) positioned outside of the trough (11). According to the invention, each bearing (4) of one shaft (3) of the roller (2) comprises two rotary supporting members (42, 42') mounted in a fixed housing (5) and spaced apart from each other, namely an outer supporting member (42) and an inner supporting member (42'), the housing (5) of the bearing (4) being held against a supporting plane (P) formed on the wall (14) and perpendicular to the axis (10) of the orifice (15) through which the shaft (3) passes, said wall (14) having means (61) for centring the housing (5) on said axis (10). The invention applies especially to a roller immersed in a bath of liquid metal such as zinc.
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
The invention concerns a method and an installation for inspecting the surface of a coiled metal strip, wherein a coil to be inspected (2) is unwound along a moving plane so as to cause at least part of the strip to move from a position for inspecting at least one of the surfaces. According to the invention, it consists in moving the part (20) of the strip to be inspected along a substantially vertical inspection plane (P), between an unwinding device (3) and a winding device (4) arranged on two vertically spaced apart levels (11, 13) on either side of an intermediate inspection level (12). Thus, the inspection can be visually performed on both surfaces (23, 24) of the strip by an operator 0 moving on a floor at the intermediate inspection level (12).
B65H 23/18 - Positionnement, tension, suppression des à-coups ou guidage des bandes longitudinal en commandant ou régulant le mécanisme d'avance de la bande, p. ex. le mécanisme agissant sur la bande courante
G01N 21/89 - Recherche de la présence de criques, de défauts ou de souillures dans un matériau mobile, p. ex. du papier, des textiles
The invention concerns a method and a device for controlling the overlapping of levelling rollers in a planishing machine comprising two levelling trains each bearing a series of rollers (4, 4') with parallel axes. The invention is particularly applicable to sheets and strip products of great thickness and high hardness requiring little roller overlap. The method is characterized in that it consists in measuring at least the overall value of the torques transmitted to the planishing rollers by the motors, in determining the actual value of the torques used for planishing the product, in comparing the determined value with the reference value of the torque provided by the presetting model and in acting on the members (3, 3') regulating the roller overlap to maintain the value of the thus determined torque at the reference value (Refc). The inventive device (103) for regulating the roller overlap for implementing the method is characterized in that it comprises a circuit (105) for regulating the speed of the rollers and a circuit (104) for regulating the overlap acting on the position of the rollers.
B21D 1/02 - Redressage, remise en forme ou élimination des distorsions locales des tôles ou d'objets déterminés faits à partir de tôlesÉtirage des feuilles métalliques combiné avec le laminage au moyen de rouleaux matriceurs
63.
METHOD OF MANAGING CYLINDERS IN A ROLLING FACILITY AND INSTALLATION FOR IMPLEMENTING SAME
The invention relates to a method for the in-line replacement of cylinders in a rolling mill, consisting in: moving a carriage close to a cage; actuating displacement means with which the carriage is equipped such as to extract the used chock-fitted cylinders in order to position same on a replacement chassis of the carriage; moving the carriage away from the cage; moving a shuttle device, which is provided with a first empty exchange chassis and a second exchange chassis bearing new chockless cylinders, to a first position in which the first exchange chassis is aligned with the replacement chassis of the carriage; actuating the displacement means of the carriage in order to transfer the used chock-fitted cylinders of the replacement chassis to the first exchange chassis; aligning the first exchange chassis of the shuttle device with a chock extraction device in order to detach the chocks from the used cylinders; aligning the two exchange chassis of the shuttle device with the chock extraction device in order to couple the chocks to the new cylinders positioned in the second exchange chassis; moving the shuttle device to a second position in which the second exchange chassis is aligned with the replacement chassis of the carriage; actuating the displacement means of the carriage in order to slide the new fitted cylinders from the second exchange chassis to the replacement chassis; moving the carriage forward; and actuating the cylinder displacement means in order to insert new fitted cylinders from the replacement chassis in the associated cage.
brevets