In the present invention, plate-bending processing in which a metal plate is bent into a cylindrical shape is performed. A butting left end surface (2a) and a butting right end surface (2b) of the metal plate (12) are subsequently tack welded by subjecting, to spot welding or the like, a side surface of a butt section (1). Thereafter, an end mill is used to subject the butt section (1) to joint processing, and an interval between the end surfaces is uniformly formed. The outer peripheral surface of the metal plate (12) which has been subjected to joint processing is then pressed by pressing bolts provided to a C-shaped fixation jig (7), to hold a gap in a reduced state. Thereafter, a laser beam welding device (6a) is used to perform laser beam welding on the butt section (1), and, as a result, the butt section (1) is joined, and the metal plate (12) bent into the cylindrical shape is formed into the cylindrical shape. Accordingly, a plate-bending hollow roll can be efficiently produced at low cost, while exhibiting a sufficient facility production capacity, said plate-bending hollow roll enabling the conveyance of steel plate with high surface quality, without having to imprint a roll-surface shape onto the steel plate to be conveyed.
In the present invention, plate-bending processing in which a metal plate is bent into a cylindrical shape is performed. A butting left end surface (2a) and a butting right end surface (2b) of the metal plate (12) are subsequently tack welded by subjecting, to spot welding or the like, a side surface of a butt section (1). Thereafter, a groove is provided to the inner peripheral side of both of the butting ends. Joint processing is subsequently performed on the butt section (1), and an interval between the end surfaces is uniformly formed. The outer peripheral surface of the metal plate (12) which has been subjected to joint processing is then pressed by pressing bolts provided to a C-shaped fixation jig (7), to hold a gap in a reduced state. Thereafter, a laser beam welding device (6a) is used to perform laser beam welding on the butt section (1). High heat input welding is further performed using a welding material, and, as a result, the butt section (1) is joined, and the metal plate (12) bent into the cylindrical shape is formed into the cylindrical shape. Accordingly, a plate-bending hollow roll can be efficiently produced at lost cost, while exhibiting a sufficient facility production capacity, said plate-bending hollow roll enabling the conveyance of steel plate with high surface quality, without having to imprint a roll-surface shape onto the steel plate to be conveyed.
A gear spindle (3) obtained by inclining the axis of a spindle inner tube (10) provided at one end with an external cog inner tube gear section (40) at 0.6 degrees to 1.6 degrees with respect to the axis of a spindle outer tube (20) provided with an internal cog outer tube gear section (50) that meshes the inner tube gear section (40). On the teeth of the inner tube gear section (40) having a face width (B), a crowning of radius (Cr) is provided so that the center in the face width direction is expanded and both tooth ends are thin. The face width (B) and the crowning radius (Cr) are set within an area that is enclosed by graphs of (Cr) = 1200 [mm], (Cr) = 4000 [mm], (B) = 0.0272 x (Cr) + 28 [mm], (B) = 59.04 x exp(0.0005 x (Cr)) [mm], and (B) = 32 x (Cr)0.274 [mm].
B21B 35/14 - Broches d'accouplement ou d'entraînement, ou supports de broches spécialement adaptés aux laminoirs ou spécialement disposés dans ceux-ci
B21B 35/12 - Mécanismes à roues dentées spécialement adaptés aux laminoirsCarters ou garnitures de ces mécanismes
F16D 3/18 - Joints universels dans lesquels la flexibilité est réalisée par pivots ou organes de liaisons coulissants ou roulants les pièces d'accouplement comportant des dents d'engrènement coulissant
Provided is a gear spindle that is optimal for reducing diameter, that is capable of maintaining adequate strength and a high torque transmission capacity, and that maintains the sealing properties of an oil seal and prevents said oil seal from being damaged during operation at a high rotational speed. In order to achieve this, outer cylinder gear sections (11) are each integrally formed on the inner peripheral surface of a spindle outer cylinder ((10), more specifically a large-diameter cylinder section (10a)) and inner cylinder gear sections (14) are each integrally formed on the outer peripheral surface of a spindle inner cylinder (13), and an oil seal (27) that seals in the lubricating oil (20) for each of the aforementioned gear sections comprises: a seal body (29) that has a channel-shaped cross section and that is interposed in the peripheral gap between the inner peripheral surface of the spindle outer cylinder ((10), more specifically the large-diameter cylinder section (10a)) and the outer peripheral surface of the spindle inner cylinder (13); and a seal mounting member (30) that comprises a band, a spring, or the like that tightens and fixes the seal body to the outer peripheral surface of the spindle inner cylinder (13) such that expansion of the seal body in the axial direction is possible in the aforementioned peripheral gap.
A partially-reduced iron producing apparatus includes: a supplying device laying ignition raw-material pellets on an endless-grate; a heating furnace heating the ignition raw-material pellets; another supplying device laying the raw material pellets on the ignition raw-material pellets; and an exhaust gas circulation device supplying an oxygen-containing gas to the raw-material pellets. The oxygen containing gas is made by circulating part of an exhaust gas discharged from the raw-material pellets and mixing it with air. A partially-reduced iron is produced by thermally reducing the raw-material pellets in a bed height direction thereof through separate combustion and heating regions. The combustion region formed on an upstream side in a travelling direction of the endless grate by supplying the oxygen-containing gas having a high oxygen concentration. The heating region formed downstream of the combustion region in the travelling direction of the endless grate by supplying the oxygen-containing gas having a low oxygen concentration.
C21B 11/00 - Fabrication de la fonte brute autrement que dans les hauts fourneaux
F27D 17/00 - Dispositions pour l'utilisation de la chaleur perdueDispositions pour l'utilisation ou pour l'élimination des gaz résiduaires
C21B 13/00 - Fabrication de fer spongieux ou d'acier liquide par des procédés directs
C21B 13/10 - Fabrication de fer spongieux ou d'acier liquide par des procédés directs dans des fours à réverbère
F27B 9/24 - Fours dans lesquels la charge est déplacée mécaniquement, p. ex. du type tunnel Fours similaires dans lesquels la charge se déplace par gravité caractérisés par le trajet de la charge pendant le traitementFours dans lesquels la charge est déplacée mécaniquement, p. ex. du type tunnel Fours similaires dans lesquels la charge se déplace par gravité caractérisés par le procédé de déplacement de la charge pendant le traitement la charge se déplaçant sur un trajet sensiblement rectiligne sur un transporteur
F27B 9/30 - Parties constitutives, accessoires ou équipement spécialement adaptés à ces types de fours
In order to provide a hot rolling facility with which an improvement in the manufacturability and the quality of a thin plate material can be achieved with little facility investment, this hot rolling facility is equipped with a first rolling line (A), which directly performs finishing rolling with multiple rolling mills (12a, 12b) on a thin slab (Wa) cast with a continuous-casting machine (10), and a second rolling line (B), which, with a roughing mill (21), reversibly rolls a thick slab (Wb) heated in a batch-type heating furnace (20), with an intermediate material (Wc) that has been rolled with the second rolling line (B) being transported to the first rolling line (A) and undergoing finishing rolling at the first rolling line (A) to produce a final product (S). The multiple rolling mills (12a, 12b) respectively comprise an upstream rolling mill (12a) and a downstream rolling mill (12b), each of which is formed with at least one rolling mill stand. A crop shear device (30) that cuts and evens up the front and rear ends of the slabs (Wa, Wc) rolled with the upstream rolling mill (12a) is installed on an intermediate table between these rolling mills (12a, 12b).
B21B 1/26 - 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 continu par laminage à chaud
B21B 1/46 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilésSéquence des opérations dans les trains de laminoirsInstallation d'une usine de laminage, p. ex. groupement de cagesSuccession des passes ou des alternances de passes pour laminer du métal immédiatement après la coulée continue
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
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
B22D 11/12 - Accessoires pour le traitement ultérieur ou le travail sur place des barres coulées
In order to provide a hot rolling facility with which the manufacturability of a thin plate material can be effectively increased with little facility investment, this hot rolling facility is equipped with a first rolling line (A), which directly performs finishing rolling with a multi-stage rolling mill (12) on a thin slab (Wa) cast with a continuous-casting machine (10), and a second rolling line (B), which is arranged parallel to the first rolling line (A) and, with a roughing mill (21), reversibly rolls a thick slab (Wb) heated in a batch-type heating furnace (20), with an intermediate material (Wc) that has been rolled with the second rolling line (B) being transported to the first rolling line (A) and undergoing finishing rolling at the first rolling line (A) to produce a final product (S). A slab sizing press (24) that reduces the width of the thick slab (Wb) heated in the batch-type heating furnace (20) is installed in the second rolling line (B).
B21B 1/26 - 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 continu par laminage à chaud
B21B 1/46 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilésSéquence des opérations dans les trains de laminoirsInstallation d'une usine de laminage, p. ex. groupement de cagesSuccession des passes ou des alternances de passes pour laminer du métal immédiatement après la coulée continue
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
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
B22D 11/12 - Accessoires pour le traitement ultérieur ou le travail sur place des barres coulées
In order to provide a hot rolling facility with which an improvement in the manufacturability and the quality of a thin plate material can be achieved with little facility investment, this hot rolling facility is equipped with a first rolling line (A), which directly performs finishing rolling with multiple rolling mills (12) on a thin slab (Wa) cast with a continuous-casting machine (10), and a second rolling line (B), which is arranged parallel to the first rolling line (A) and, with a roughing mill (21), reversibly rolls a thick slab (Wb) heated in a batch-type heating furnace (20) , with an intermediate material (Wc) that has been rolled with the second rolling line (B) being transported to the first rolling line (A) and undergoing finishing rolling at the first rolling line (A) to produce a final product (S). A crop shear device (30) that cuts and evens up the front and rear ends of the intermediate material (Wc) rolled with the roughing mill (21) is installed in the second rolling line (B).
B21B 1/26 - 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 continu par laminage à chaud
B21B 1/46 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilésSéquence des opérations dans les trains de laminoirsInstallation d'une usine de laminage, p. ex. groupement de cagesSuccession des passes ou des alternances de passes pour laminer du métal immédiatement après la coulée continue
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
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
B22D 11/12 - Accessoires pour le traitement ultérieur ou le travail sur place des barres coulées
In order to provide a highly versatile hot rolling facility with which an improvement in the manufacturability and the quality of a thin plate material can be achieved and with which thick plate materials also can be manufactured with little facility investment, the present invention is equipped with: a first rolling line (A), which directly performs finishing rolling with multiple rolling mills (12a, 12b) on a thin slab (Wa) cast with a continuous-casting machine (10), and then takes up this thin slab with multiple down-coilers (13); a second rolling line (B), which is arranged parallel to the first rolling line and, with a roughing mill (21), reversibly rolls a thick slab (Wb) heated in a batch-type heating furnace (20); transport furnaces (22, 22A), which are capable of transporting the intermediate material (Wc) that has been rolled with the second rolling line to the first rolling line so as to perform finishing rolling on said intermediate material and produce a final product (S) with the first rolling line; and dispensing means (22A, 40), which are capable of directly dispensing a slab (Wc) that has been rolled with the second rolling line, without transporting the slab as an intermediate material to the first rolling line.
B21B 1/26 - 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 continu par laminage à chaud
B21B 1/46 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilésSéquence des opérations dans les trains de laminoirsInstallation d'une usine de laminage, p. ex. groupement de cagesSuccession des passes ou des alternances de passes pour laminer du métal immédiatement après la coulée continue
B22D 11/12 - Accessoires pour le traitement ultérieur ou le travail sur place des barres coulées
10.
COLD ROLLING MILL, TANDEM ROLLING FACILITY, REVERSING ROLLING FACILITY, METHOD FOR MODIFYING ROLLING FACILITY, AND METHOD FOR OPERATING COLD ROLLING MILL
In order to reduce the diameter of the work rolls of a six-stage rolling mill and thus to enable rolling of a steel plate having unprecedented hardness and to enable rolling of a steel plate having conventional hardness but with a higher rolling reduction, and to prevent a decrease in production due to the use of a mill with a small work roll, such as a cluster-type multi-stage rolling mill, a cold rolling mill (51), which rolls a metal plate (1) having a minimum plate width of 600 mm or greater and a maximum plate width of 1,500-1,900 mm, is equipped with: a pair of work rolls (2), upper and lower, which roll the rolled material (1); a pair of intermediate rolls (3), upper and lower, which respectively support the work rolls (2); a pair of reinforcing rolls (4), upper and lower, which respectively support the intermediate rolls (3); axial direction shift devices (23) for the intermediate rolls (3); and bending devices (10, 11) for the work rolls (2) and the intermediate rolls (3). The diameter of the work rolls (2) is set between 300-400 mm, and the diameter of the intermediate rolls (3) is set between 560-690 mm.
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 13/14 - 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
11.
HOT PLATE MATERIAL MANUFACTURING FACILITY AND HOT PLATE MATERIAL MANUFACTURING METHOD
In order to provide a hot plate material manufacturing facility and a hot plate material manufacturing method which enable endless rolling on the basis of multiple strands and with which the amount of production of a thin plate material can be increased, this hot plate material manufacturing facility is equipped with: a mill front hearth (16) arranged on the extended line of a rolling line on the entry side of a roughing mill (18), and having a length equal to or greater than the slab length corresponding to one coil; a transport hearth (15) arranged on the entry side of the mill front hearth (16), and capable of transporting a slab (W) to the mill front hearth (16); multiple slab production lines arranged on the entry side of the transport hearth (15); a joining machine (17) arranged on the exit side of the mill front hearth (16); a continuous casting machine exit-side hearth (14) arranged on the entry side of the transport hearth (15) of at least one of the slab production lines, and having a length equal to or greater than the slab length corresponding to multiple coils; and a slab casting machine (12) arranged on the entry side of the continuous casting machine exit-side hearth (14).
B22D 11/00 - Coulée continue des métaux, c.-à-d. en longueur indéfinie
B21B 1/46 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilésSéquence des opérations dans les trains de laminoirsInstallation d'une usine de laminage, p. ex. groupement de cagesSuccession des passes ou des alternances de passes pour laminer du métal immédiatement après la coulée continue
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
B22D 11/12 - Accessoires pour le traitement ultérieur ou le travail sur place des barres coulées
Provided is a cooling device, wherein water is drained appropriately to cope with even an increase in the water volume density of cooling water to thereby ensure high cooling capability. A cooling device is provided with a plurality of cooling nozzles which are disposed downstream from a hot finished rolling mill line, are capable of supplying cooling water toward a pass line from above, and are arranged in the direction of the pass line, and an upper surface guide which is disposed between the pass line and the cooling nozzles. The cooling device is characterized in that when the water volume density of the cooling water to be jetted is set to qm (m3/(m2·sec)), the pitch between the cooling nozzles in the direction of the pass line is set to L (m), the distance between the lower surface of the upper surface guide and the pass line is set to hp (m), the homogeneous cooling width is set to Wu (m), and the cross-sectional area of a virtual flow path of drainage water flowing in the direction of the width of a steel sheet per pitch between the cooling nozzles in the direction of the pass line is set to S (m2), a predetermined relationship is established.
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
[Solution] With this continuous hot-dip plating equipment, a steel plate (2) is continuously immersed into a molten metal bath (1), a wiping gas is sprayed from wiping nozzles (5) to the steel plate (2) pulled out of the bath so as to remove excessive molten zinc, and an electromagnetic force is acted upon the steel plate (2) by corrective force generators (8) which are provided above the wiping nozzles (5) in order to contactlessly correct camber of the steel plate (2) at the position of the wiping nozzles (5). The continuous hot-dip plating equipment is characterized in that the corrective force generators (8) comprise electromagnets (80) capable of deforming, to a predetermined degree, the steel plate (2) of a predetermined thickness that passes through said equipment (8), and that the distance between the corrective force generators (8) and the wiping nozzles (5) satisfies the Equation (1)given below. C × A - D < B … Equation (1)
In order to perform friction stir welding with excellent economy and high weld strength and reliability, a rotating tool (3) has a tool body (3a) having a shoulder face (3b) formed in the distal end portion thereof and a pin-shaped projection (3d) formed so as to protrude from the shoulder face (3b), and a backing tool (4) has a tool body (4a) having a pressure maintaining face (4b) formed in the distal end portion thereof and a cavity (4d) for receiving a distal end part of the projection (3d). The rotating tool (3) and the backing tool (4) are arranged opposite each other on the front side and back side of a weld zone (J) of a metal plate. The rotating tool (3) is moved toward the backing tool (4) while the backing tool (4) is held and the rotating tool is rotated, the distal end of the projection (3d) of the rotating tool is inserted into the cavity (4d) of the backing tool so that the weld zone is interposed, and the shoulder face (3b) of the rotating tool is pressed against the front side of the weld zone. In this state, the rotating tool (3) and the backing tool (4) are moved along the weld zone, and the entire area of the weld zone in the plate thickness direction is friction-stirred by the rotating tool (3).
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
To provide a side trimmer which is capable of saving a space and energy by a size and weight reduction and making monitoring of a cutting state and a maintenance management easy, in the side trimmer (10) in which a band-shaped steel plate (W) is threaded, and the band-shaped steel plate (W) is sandwiched between a pair of upper and lower rotary blades (20a, 20b) to cut both edge portions thereof, upper and lower chocks (21a, 21b) provided with the upper and lower rotary blades (20a, 20b) are provided to a single rectangular frame (17) so as to be lifted and lowered in a cantilevered support form through linear guides (18a, 18b, 19a, 19b) disposed on two planes perpendicular to each other in a plan view of the single rectangular frame (17).
B23D 19/06 - Machines à cisailler ou dispositifs de cisaillage taillant au moyen de disques rotatifs ayant des disques de cisaillage rotatifs disposés par paires travaillant conjointement avec plusieurs paires de disques de cisaillage espacées travaillant simultanément, p. ex. pour rogner ou fabriquer des bandes
16.
ROTATE TOOL FOR FRICTION STIR WELDING, AND FRICTION STIR WELDING METHOD
The purpose of the present invention is to prevent the excess increase in temperature of a tool main body in the friction stir welding of a high-melting-point material such as a steel, thereby prolonging the service life of the tool main body. A heat-removing body (4), which is a copper ring, is fixed between metal plates (1, 2) so as to form a void space (5) between the metal plates in such a manner that the heat-removing body (4) can be attached to or detached from an outer peripheral surface (3e) of a tool main body (3) and does not contact with the metal plates (1, 2) not to generate undesired frictional resistance. With regard to the material heat-removing body (4), the material for the heat-removing body (4), the position (L) at which the heat-removing body (4) is to be attached, the volume (V) of the heat-removing body (4), and the end-face tilt angle of the heat-removing body (4) are set in such a manner that the heat-removing body (4) can exhibit a satisfactory effect of preventing the increase in temperature. During the friction stir welding, a frictional heat generated at a tip part of the tool main body (3) is transferred to the tool main body (3, 13), and is then transferred to the heat-removing body (4) and stored in the heat-removing body (4). In this manner, the increase in temperature of the tool main body (3, 13) can be prevented.
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
Provided are hot rolling equipment and a hot rolling method for precisely controlling the meandering and plate shape of a steel strip, thereby making it possible to prevent tail end squeezing of the steel strip. Hot rolling equipment (10) for this purpose, for sequentially passing a steel strip (1) through rolling machines (11, 12) and thereby rolling the metal strip (1), wherein a plurality of split rolls (63) capable of contacting the steel strip (1) is provided between the rolling machines (11, 12), and, when the split rolls (63) contact the steel strip (1), detection torques (Td, Tw) acting on the left and right ends of the split rolls (63) are detected by torque detectors (67a, 67b), the reduction leveling of the rolling machines (11, 12) being adjusted on the basis of the detected detection torques (Td, Tw) to control the meandering and plate shape of the steel strip (1).
Provided is a hot-rolled steel sheet production apparatus in which excellent drainage performance can be achieved in a hot-rolled steel sheet production line thereof. The hot-rolled steel sheet production apparatus comprises a row of hot finishing mills and a cooling device which is arranged so as to cool a steel sheet, wherein the cooling device comprises an upper-surface-side nozzle which enables the spraying of cooling water from above, a lower-surface-side nozzle which enables the spraying of the cooling water from underneath, an upper surface guide which is arranged between a pass line and the upper-surface-side nozzle, a lower surface guide which is arranged between the pass line and the lower-surface-side nozzle, and a forced drainage means which can forcibly suck the cooling water sprayed through the upper-surface-side nozzle and can discharge the sucked cooling water, and wherein the forced drainage means comprises a water-conducting passage having an opening arranged on a side from which the cooling-water flows into the water-conducting passage and an opening arranged on a side from which the cooling water flows out of the water-conducting passage and a suction unit which can forcibly discharge the cooling water that has flowed into the water-conducting passage.
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
B21B 39/14 - Guidage, présentation ou alignement des pièces travaillées
19.
MANUFACTURING DEVICE AND MANUFACTURING METHOD FOR HOT-ROLLED STEEL STRIP
In order to provide a manufacturing device and a manufacturing method for a hot-rolled steel strip, which are capable of obtaining the desired quality of material by rapid uniform cooling immediately after rolling, and improving yield by early sheet tension and sheet shape measurements, a manufacturing device for a hot-rolled steel strip is provided with a finishing rolling mill line (11), a first cooling unit (13) installed just behind the exit side of the finishing rolling mill line, and a pinch roll (14) which is installed on the exit side of the first cooling unit and in contact with both the upper and lower surfaces of a strip (S), at least a draining roll (15) located on the upper side of the strip (S) is disposed between the first cooling unit and the pinch roll, and a tension/shape measuring unit (16) for measuring the tension and shape of the strip (S) is installed between the draining roll and the pinch roll.
B21B 38/02 - Procédés ou dispositifs de mesure spécialement adaptés aux laminoirs, p. ex. détection de la position, inspection du produit pour mesurer la planéité ou le profil des bandes
B21B 37/00 - Dispositifs ou procédés de commande spécialement adaptés aux laminoirs ou aux produits laminés
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
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
In order that in mash seam welding for metal plates with a thickness exceeding 2 mm, the joint strength is stabilized, the difference in the level of a joint part is reduced, high joint strength and reliability are ensured, and therefore metal plates with a thickness exceeding 4.5 mm can be also joined, two metal plates (5, 6) are grasped by first and second graspers (7, 8), respectively, ends of the two metal plates (5, 6) are overlapped , an overlap (L) therebetween is pressurized by a pair of upper and lower electrode wheels (1, 2) and continuously welded while a welding current is being passed to thereby join the two metal plates. While the overlap (L) is continuously welded while the welding current is being passed, welding pressure to be applied to the upper and lower electrode wheels (1, 2) is controlled such that upper and lower pressing forces acting on the overlap become equal.
Provided is a cooling system for a hot-rolled steel strip capable of increasing the cooling rate for rapidly cooling a rolled steel immediately after rolling and suitable for an apparatus for manufacturing a hot-rolled steel strip having a fine-grained structure. For this purpose, guides (16A, 16B) having guiding surfaces (16a, 16b) to guide a rolled steel (W) exiting work rolls (12A, 12B) in the conveyance direction are provided at exits of the work rolls in a final stand (Sn) of a finish rolling mill line in a manner that the guides can follow a change in the diameter of the work rolls, a number of injection holes (21A, 21B) are formed in the guides, and a number of rolled steel cooling nozzles (23A, 23B) are provided to spray a large amount of cooling water through the injection holes directly onto the rolled steel.
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
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 27/10 - Lubrification, refroidissement ou chauffage des cylindres extérieurement
B21B 39/14 - Guidage, présentation ou alignement des pièces travaillées
B21B 39/16 - Guidage, présentation ou alignement des pièces travaillées immédiatement avant d'entrer dans la passe ou juste après l'avoir quittée
22.
DOUBLE-SIDE FRICTION STIR WELDING METHOD FOR METAL PLATES HAVING GAP BETWEEN ABUTTING PORTIONS
To perform double-side friction stir welding whereby even when the gap between abutting portions of two metal plates exceeds 0.5 mm, the welding strength is increased by suppressing the welding failure, the economy is improved by suppressing the increase in facility cost, and the production efficiency is improved. First and second rotating tools (3, 4) respectively have tool main bodies (3a, 4a). Shoulder portions (3c, 4c) are respectively formed at the tip portions of the tool main bodies (3a, 4a). The first rotating tool (3) further includes a protruding portion (3d) formed to protrude from the tip portion of the tool main body. The second rotating tool (4) further includes a recessed portion (4d) formed in the tip portion of the tool main body and accommodating the tip of the protruding portion (3d) upon welding of two metal plates (1, 2). In a state where the gap shorter than the diameter of the protruding portion is generated between abutting portions (B) obtained by causing the end faces of the metal plates (1, 2) to face each other, the metal plates (1, 2) are gripped by gripping devices (5, 6), the tip of the protruding portion (3d) of the rotating tool is inserted into the recessed portion (4d) of the rotating tool, and the metal plates are welded by friction-stirring the entire areas of the abutting portions in the plate thickness direction.
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
23.
FRICTION STIR JOINING SYSTEM AND FRICTION STIR JOINING METHOD
The purpose of the present invention is to perform friction stir joining with improved thermal efficiency without adhesion while preventing an increase in size, enhancing production efficiency, and preventing asymmetric residual stress and unbalanced strength. To this end, a robot arm (12) is driven to locate rotating tools (5, 6) on the front and rear sides of a joint (J) between two metal plates (1, 2) so that the tools are opposed to each other with the joint therebetween; tool rotating units (7, 8) and tool pushing units (9, 10) are driven to move the rotating tools (5, 6) towards each other while being rotated and push shoulders (5b, 6b) of the rotating tools (5, 6) against the front and rear sides of the joint (J); and in this condition, the robot arm (12) is driven to move the rotating tools (5, 6), while being rotated, along the joint (J), thereby allowing the joint (J) to be friction stirred to join the two metal plates (1, 2) (double-sided friction stir joining).
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
24.
ROLLING MACHINE AND TANDEM ROLLING FACILITY EQUIPPED WITH SAME
Provided are a rolling machine which has a work roll adequately reduced in diameter to effectively roll a hard rolled material and a tandem rolling facility equipped with the same. To this end, the rolling machine (11) includes a pair of upper and lower work rolls (22); a pair of upper and lower intermediate rolls (23) which support the respective work rolls (22) from above and below and are supported to be movable along the roll axis, the intermediate rolls (23) having a tapered portion (23b) at the end portions of the upper and lower rolls, the end portions being symmetric about a point on the center of plate width of the rolled material (1); a pair of upper and lower reinforcing rolls (24) for supporting the respective intermediate rolls (23) from above and below; a pair of upper and lower support rolls (41a to 41d) for supporting the respective work rolls (22) from the inlet and outlet sides; and two pairs of upper and lower separate bearing shafts (42a to 42d, 43a to 42d) for supporting the respective support rolls (41a to 41d) from the inlet and outlet sides, wherein the work roll has a diameter range of (the work roll diameter)/(the maximum plate width of the rolled material) being greater than 0.1 and equal to or less than 0.16.
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 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
B21B 27/00 - CylindresLubrification, refroidissement ou chauffage des cylindres en cours d'utilisation
Provided is a green pellet (10) which comprises: an inner core layer (11) containing an iron oxide-containing starting material, a carbonaceous material for reduction, and a slag-forming agent; and a coating layer (12) disposed so as to encapsulate the surface of the inner core layer (11), wherein the coating layer (12) is formed from a protective layer (12a), which is disposed so as to encapsulate the surface of the inner core layer (11) and which contains an inorganic compound (such as an alkali metal oxide) having a melting point that is 750ºC or greater but less than 1100ºC, and a combustion layer (12b), which is disposed so as to encapsulate the surface of the protective layer (12a) and which contains the carbonaceous material.
A partial reduction furnace (100) is provided with: a lattice-like grate (111) that can travel along a horizontal direction; a windbox (112) arranged so as to cover the lower portion of the grate (111); and a feed nozzle (113) and feed blower (114) connected to the windbox (112) and for feeding combustion gas to the interior of the windbox (112). The partial reduction furnace (100) is provided with louvers (116A, 116B) installed on the windbox (112) along a horizontal direction so as to separate the grate (111) and the feed nozzle (113), and causing a drop in pressure in the combustion gas (1) from the feed nozzle (113).
Disclosed is an operation control method of tandem rolling mill that enables rolling under high pressure at a latter-stage stand that is of the tandem rolling mill and that is necessary in such purposes as the production of fine-grained steel. Further disclosed is a method for producing a hot-rolled steel sheet. The operation control method of a tandem rolling mill includes a first step for determining outgoing-side sheet thickness at each stand when rolling a constant region of a rolled member, and a second step for determining the outgoing-side sheet thickness of each stand when rolling the tip of the rolled member in a manner so that a pre-fastening load is no greater than a set value; the rolled member is rolled in a manner so as to become the outgoing-side sheet thickness determined in the second step at least until the very tip of the rolled member is engaged by each stand; the constant region of the rolled member is rolled to the outgoing-side sheet thickness determined in the first step by means of the N-m+1-th stand to the N-th stand; and the outgoing-side sheet thickness from the N-m+1-th stand to the N-th stand determined in the second step is thicker than the outgoing-side sheet thickness determined in the first step. The method for producing a hot-rolled steel sheet has a step that rolls a steel sheet using a hot-finishing mill array, the operation of which is controlled by said operation control method.
B21B 37/72 - Commande de la partie terminale arrièreCommande de la partie terminale avant
B21B 1/26 - 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 continu par laminage à chaud
28.
METHOD FOR PRODUCING AND DEVICE FOR PRODUCING HOT-ROLLED STEEL SHEET
Disclosed are a method for producing and a device for producing a hot-rolled steel sheet that are able to evenly cool a rolled member and to increase the surface quality of the rolled member. The device for producing a hot rolled steel sheet is provided with: a rolling stand; a supply means that can supply a lubricant to a work roll and/or a backup roll; an online roll grinding device; and a removal means that can remove at least a portion of the lubricant before grinding the surface of the work roll by means of said grinding device. The method for producing a hot rolled steel sheet has: a step wherein, when rolling a plurality of rolled members using said production device, at least a portion of the lubricant adhered to the work roll, or the work roll and the backup roll, is removed using the lubricant removal means after completion of rolling of the leading rolled member; a step wherein, after said step, the work roll is ground using the online roll grinding device; and a step wherein lubricant is supplied towards the work roll and/or the backup roll from the lubricant supply means.
B21B 27/10 - Lubrification, refroidissement ou chauffage des cylindres extérieurement
B21B 1/26 - 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 continu par laminage à chaud
B21B 28/04 - Maintenance des cylindres en état de fonctionnement, p. ex. remise en état en cours de fonctionnement, p. ex. polissage
A rack traveling type coil conveying device capable of stably conveying a wound coil at a high speed with the meshing between a rack and a pinion maintained in a good condition. A rack traveling type coil conveying device is provided with: rails (11) provided on a floor (F); a coil conveying carriage (21) which can travel on the rails (11) and on which a coil (C) of a rolled material can be loaded; a rack (31) capable of traveling on the rails (11) and removably connected to the coil conveying carriage (21); a pinion (44) provided above the rack (31) and meshing with the rack (31); and a motor (41) provided on the floor (F) and rotationally driving the pinion (44).
B65G 35/06 - Transporteurs mécaniques non prévus ailleurs comportant un porte-charges se déplaçant le long d'un circuit, p. ex. d'un circuit fermé, et adapté pour venir en prise avec l'un quelconque des éléments de traction espacés le long du circuit
B61D 3/16 - Wagons de marchandises découverts ou fourgons adaptés au transport de chargements particuliers
30.
EQUIPMENT FOR MANUFACTURING A COLD-ROLLED MATERIAL, AND COLD-ROLLING METHOD
For a small-to-mid-sized production facility with an annual output between around 300,000 and 600,000 metric tons, the disclosed cold-rolling equipment and method provided an excellent ROI while maintaining high efficiency and yield. Input coils (101a to 101c) paid out from a pay-out device (2) are spliced together by a splicing device (5), a build-up coil (102) having a diameter of 3000 mm or less is formed at a take-up/pay-out device (6), and the build-up coil (102) is reversibly cold-rolled a prescribed number of times by a cold-rolling mill (1) between take-up/pay-out devices (3 and 4) until a desired product thickness is reached. On the last pass, while being slow-rolled (for example at 2 mpm) by the cold-rolling mill (1), the build-up coil (102) is segmented by a segmentation device (7a or 7b), thereby forming a plurality of output coils (103a to 103c) that are extracted from the take-up/pay-out device (3) and carried out.
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
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
B21B 37/38 - Commande de la planéité ou du profil pendant le laminage de bandes, de feuilles ou de tôles utilisant la flexion du cylindre
B21C 47/00 - Enroulement, bobinage ou dévidage des fils, bandes ou autres matériaux flexibles métalliques, caractérisés par le fait que ces opérations ne s'appliquent qu'au travail des métaux
31.
TWO-SURFACE FRICTION STIR WELDING METHOD AND DEVICE, TOOL SET FOR TWO-SURFACE FRICTION STIR
In order to economically perform two-surface friction stir welding resulting in high joint strength, a first and second rotation tool (3, 4) each has a shoulder section (3c, 4c) formed on the tip portion a tool body (3a, 4a). The first rotation tool (3) further has a protrusion (3d) formed so as to protrude from the tip portion of the tool body, and the second rotation tool (4) further has a concavity (4d) which is formed in the tip portion of the tool body and which accommodates the tip of the protrusion (3d) during welding of two metal plates (1, 2). The first and second rotation tools are positioned oppositely on the front and back faces of the joining area (J) of the metal plates, and are moved towards each other. The tip of the protrusion of the first rotation tool is inserted into the concavity of the second rotation tool, the shoulder surfaces (3b, 4b) of the shoulder sections of the first and second rotation tool are pressed onto the front and back sides of the joining area, and in that state, the first and second rotation tools are moved along the joining area, friction stirring the entire joining area in the thickness direction of the plates with the first and the second rotation tools.
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
A cluster-type multistage rolling mill includes: a top inner housing a top roll group; a bottom inner housing a bottom roll group; an entry-side outer housing provided at entry sides of the inner housings and having an opening portion which a strip is allowed to pass through; a delivery-side outer housing provided at delivery sides of the inner housings and having an opening portion which the strip is allowed to pass through; sets of pass line adjusters provided in upper portions of the opening portions, and pressing an entry-side pressing portion and a delivery-side pressing portion of the top inner housing, respectively; and sets of roll gap controlling cylinders provided in lower portions of the opening portions, and pressing an entry-side pressing portion and a delivery-side pressing portion of the bottom inner housing, respectively.
An apparatus and method of cold rolling for a small sized or medium-sized plant with a capacity from 300thousand to 600 thousand tons of product per year are proposed that have a high efficiency, a high yield and a high cost-efficiency. A strip is directly fed to a cold rolling mill (1) from a coil (101a) at an uncoiler (2) to be cold-milled and then to be rewound by a rewinder (4). When the trailing end of the coil (101a) reaches a splicer (5), the end is joined to a leading end of next coil (101b) uncoiled by the uncoiler(2) and the next coil (101b) is cold-milled. The cold-milling and joining operations are repeated for following coils at the cold rolling mill (1) and the splicer (5) in a first path to form a buildup coil (102). The buildup coil (102) is then repeatedly rolled down in a reversing rolling to a desired thickness. In the final path, the build up coil (102) is divided into several coils (103) by means of a cutter (6a) or (6b).
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
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
B21B 37/32 - Commande de la planéité ou du profil pendant le laminage de bandes, de feuilles ou de tôles utilisant une commande du bombé des cylindres en refroidissant, en chauffant ou en lubrifiant les cylindres
B21B 37/38 - Commande de la planéité ou du profil pendant le laminage de bandes, de feuilles ou de tôles utilisant la flexion du cylindre
B21B 41/00 - Guidage, transport ou accumulation de matériaux de grande flexibilité, p. ex. de fils ou bandes métalliques, en boucles ou en arceauxDispositifs releveurs de boucles
34.
BOTH- SIDE FRICTION STIR BONDING METHOD, BONDING DEVICE, BONDING METHOD OF METAL PLATE IN COLD ROLLING FACILITY AND COLD ROLLING FACILITY
Disclosed is a both-side friction stir bonding method wherein a bonding strength is increased and the reliability of the bonding strength is enhanced by minimizing fracture and poor bonding of a metal plate when the metal plate having a thickness smaller than the diameter at the shoulder portion of a rotary tool is subjected to both-side friction stir bonding, and furthermore the lifetime of the tool is improved and the economy of the rotary tool is improved. Rotary tools (5, 6), which are arranged opposite to the front surface side and the back surface side at the joint (J) of two metal plates (1, 2), respectively, are moved to approach each other while the front and back surfaces of the metal plates (1, 2) are grasped by means of grasping devices (7, 8) on the input and output sides, to thereby provide a predetermined clearance δ between the distal ends of the probes (13a, 13b) of the upper and lower rotary tools (5, 6) and press the shoulder portions (5b, 6b) of the rotary tools (5, 6) against the front and back surface sides at the joint (J). In this state, the upper and lower rotary tools (5, 6) are moved along the butting portion (J) while rotated, thus performing friction stir bonding. Friction stir bonding is carried out while the shaft center (14) of the upper and lower rotary tools (5, 6) is inclined with respect to the advancing direction of the rotary tools (5, 6) in the direction in which the respective probes (13a, 13b) precede.
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
35.
Rolling mill and tandem rolling mill having the same
A rolling mill, which can use work rolls of a smaller diameter for rolling a hard material and a thin strip material, and can obtain strips of high product quality with high productivity, is provided. For this purpose, a six-high rolling mill includes upper and lower work rolls (2) as a pair for rolling a strip (1), upper and lower intermediate rolls (3) as a pair for supporting the paired upper and lower work rolls, and upper and lower back-up rolls (4) as a pair for supporting the paired upper and lower intermediate rolls, but has no supporting rolls inside and outside the rollable strip width of the work rolls. The work rolls have a small diameter, and use a material having a high longitudinal modulus, such as a hard metal or a ceramic.
B21B 13/08 - Cages de laminoirs, c.-à-d. ensembles composés d'un châssis, de cylindres et d’accessoires dont les axes des cylindres sont disposés dans des directions différentes, p. ex. pour le processus de laminage dit "universel"
In a gas wiping apparatus for blowing a gas on the front side and the back side of a strip, which exits from a hot-dip plating bath and travels upward, from wiping nozzles to adjust the amount of a plating deposit, the wiping nozzles are supported to be linearly movable beyond the width of the nozzles in the plate width direction of the strip.
B05C 11/06 - Appareils pour étaler ou répartir des liquides ou d'autres matériaux fluides déjà appliqués sur une surfaceRéglage de l'épaisseur du revêtement comportant un soufflage de gaz ou vapeur
37.
Device for inspecting front and back surfaces of a strip material and method thereof
In an inspection device for inspecting front and back surfaces of a strip material rolled by a rolling machine, both ends of the strip material along a longitudinal direction of the strip material are claimed by two pairs of clamping devices and the front surface of the back surface of the strip material is pressed at an optional position between the two pairs of the clamping devices by at least one pressing device. Thus, after clamping the strip material, the two pairs of the clamping devices are not displaced along the longitudinal direction of the strip material. A function for applying tensile stress to the strip material and a function for clamping the strip material are individually and separately provided so that the inspection device can be simplified. By pressing the strip material at a point between the two pairs of the clamping devices, at least one of pressing devices can be down sized. It is superior in view of an economical reason. It is possible to set tensile stress at high accuracy and minimize tensile stress variation with respect to a tensile stress level previously set in an operation for inspecting front and back surfaces of the strip material. Therefore, it can be reduced a risk that the strip material is broken and it can be provide a safety inspection device with high reliability for inspecting front and back surfaces of the strip material. Further, it is possible to provide an inspection device for inspecting front and back surfaces wherein a warp of the strip material along a width direction thereof can be adjusted and wrinkles occurred on the strip material by clamping with the clamping devices are controlled.
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
In a gas wiping apparatus which blows gas through a wiping nozzle onto front and rear surfaces of a steel plate going out from a molten metal coating pot and running upward and which thereby controls a deposit mass, the wiping nozzle is separated into upper and lower lips, blocking faces partially closing a gas supply channel are formed in the upper and lower lips at vertically different positions on the opposite sides from each other in a gas outlet width direction, and the upper and lower lips are provided in such a manner as to be movable in a width direction of the steel plate.
Disclose is equipment for inspecting the front and back sides of a strip rolled by a rolling machine. Two sets of grippers grip the strip on the both sides in the longitudinal direction, and the front or back side of the strip is pressed at an arbitrary position between the two sets of grippers so that the two sets of grippers do not displace in the longitudinal direction of the strip after the strip is gripped. The inspection equipment is simplified by separating tension setting function and grip function, and at least one pressing device is made compact by pressing the strip between the two sets of grippers. The inspection equipment has excellent cost performance and is highly safe and reliable, and in the equipment, tension can be set with high precision and the risk of breaking the strip is reduced by minimizing variation of tension for a set tension at the time of inspecting the front and back sides of a strip. Furthermore, the inspection equipment corrects warp in the width direction of the strip and suppresses creasing when the strip is gripped by the gripper.
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
A pair of upper and lower electrode rings (1, 2) are arranged such that their axes (17, 18) incline in the opposite directions in a horizontal plane against a line (Y) perpendicularly intersecting a welding line (X) formed at the overlapping portion (L) of two metal plates (5, 6), and mash seam welding is performed while driving the electrode rings (1, 2) positively by means of electric motors (61, 62). Consequently, increase in thickness and level difference gradient can be reduced remarkably at the joint, and high joint strength can be assured by reducing stress concentration coefficient. Furthermore, a nugget (N) is jointed not to come off from the joint interface. The axes (17, 18) of the electrode rings (1, 2) incline in such a direction as the advancing direction portions (1A, 2A) of the electrode rings (1, 2) are directed to the direction where a metal plate touching the electrode rings (1, 2) at first exists in the horizontal plane. Consequently, the end portion of the metal plate at the overlapping portion (L) can be prevented from biting into the electrode rings (1, 2) to cause a flaw thereto or generation of dust can be prevented at the time of welding.
B23K 11/06 - Soudage par résistanceSectionnement par chauffage par résistance en utilisant des électrodes à molette
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
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 37/08 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe pour l'ébavurage
A pair of upper and lower pressure rollers (3, 4) are so arranged that their shaft cores (15, 16) are inclined in directions, within a horizontal face, opposite to a straight line orthogonal to the welding line of a bonding section (J). While driving the pressure rollers (3, 4) actively by electric motors (63, 64), metal material is rolled. This smoothens a level difference at the bonding section or reduces the incline of the level difference to secure high bonding strength. The shaft cores (15, 16) of the pressure rollers (3, 4) are inclined in the direction so that the advancing-direction sections (3A, 4A) of the pressure rollers (3, 4) face, within the horizontal face, a direction opposite to the direction wherein the metal plates (5, 6) exist. The metal plates are those to be brought into contact with the pressure rollers (3, 4) first and to be handled by a metal material. This prevents the level difference section from being folded into the base material of the metal plates (5, 6), so that a stress concentration factor is reduced and a level difference (S) at the bonding section is smoothened, thereby improving the quality of the bonding section.
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
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
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
B23K 37/08 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe pour l'ébavurage
Provided is a carousel reel facility wherein the tail of a strip can be guided stably to a take-up drum even if the strip carried at high speed is cut off. Distal end of a guide frame (31) is made to abut removably against a snubber roller (25) which presses the outer circumferential surface of the strip (S) taken up at a take-up completion position so as to follow up the coil diameter of the strip, the guide frame (31) is rocked so as to be interlocked with the coil diameter follow-up operation of the snubber roller (25), and the rod (37a) of an elevating/lowering cylinder (37) is kept in an elongated state when the snubber roller (25) performs a follow-up operation according to the enlargement of the coil diameter so that a link member (35), a link bar (36) and the elevating/lowering cylinder (37) themselves constitute a link mechanism.
B21C 47/00 - Enroulement, bobinage ou dévidage des fils, bandes ou autres matériaux flexibles métalliques, caractérisés par le fait que ces opérations ne s'appliquent qu'au travail des métaux
B21C 47/34 - Dispositifs d'alimentation ou de guidage non spécialement adaptés à un type particulier d'appareil
43.
ROLLING MILL, AND TANDEM ROLLING MILL HAVING THE SAME
Provided is a rolling mill, which can use working rolls of smaller diameters for rolling a hard material and a thin plate material and which can acquire band plates of high productivity and high product quality. A rolling mill of six stages comprises a pair of vertical working rolls (2) for rolling a band plate (1), a pair of vertical intermediate rolls (3) for supporting the paired vertical working rolls, and a pair of vertical reinforcing rolls (4) for supporting the paired vertical intermediate rolls, but has no support roll inside and outside of the rollable plate width of the working rolls. These working rolls have a small diameter and are made of a hard material having a high modulus of longitudinal elasticity such as ceramics.
Provided is a rolling mill, which can use working rolls of smaller diameters for rolling a hard material and a thin plate material and which can reduce an edge drop and improve a surface luster. The rolling mill comprises a pair of vertical working rolls (2) for rolling a band plate (1), a pair of vertical intermediate rolls (3) for supporting the paired vertical working rolls, and a pair of vertical reinforcing rolls (4) for supporting the paired vertical intermediate rolls. These paired working rolls are supported on the rolling direction entrance side of the outer positions of the rollable plate width by a plurality of support bearings (8a to 8f and 9a to 9f) of a vertically staggered array, and are supported on the rolling direction exit side by a plurality of support bearings (10a to 10f and 11a to 11f) of a vertically staggered array, and these individual support bearings have structures, in which they are vertically wrapped.
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 27/00 - CylindresLubrification, refroidissement ou chauffage des cylindres en cours d'utilisation
A continuous hot-dip plating equipment comprising first constituent metal supply means (14a-14c) for supplying of zinc (101) to aerial pot (11); second constituent metal supply means (15a-15c) for supplying of aluminum (102) to the aerial pot (11); analyzer (18) for measuring of the concentrations of constituent metals in molten metal (100) within the aerial pot (11); and control unit (19) for controlling of the first and second constituent metal supply means (14a-14c,15a-15c) on the basis of information from the analyzer (18) so as to realize such a concentration of aluminum (102) in the molten metal (100) within the aerial pot (11) that the concentration of aluminum in a coating layer formed on the surface of band plate (1) becomes a target value, the above concentration of aluminum (102) determined from predetermined correlationship, thereby accomplishing regulation of the amount of zinc (101) and aluminum (102) supplied into the aerial pot (11).
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
A drain apparatus that is capable of draining a large volume of liquid cooling medium flowing downward along a strip steel. The drain apparatus is one comprising paired upper nozzles (35) and lower nozzles (36) disposed opposite to each other so as to have strip steel (S) interposed therebetween on the exit side of primary cooling zone (1) and secondary cooling zone (2) for cooling vertically conveyed heated strip steel (S) with the use of steam water (C), wherein on the planes of the upper nozzles (35) and lower nozzles (36) opposite to the strip steel (S), superior slits (35b,36b) and inferior slits (35c,36c) for drain of cooling water (W) flowing downward along the strip steel (S) by jetting of air (A), furnished with openings approximately perpendicular to the direction of conveyance of the strip steel (S) are provided along the direction of conveyance of the strip steel (S).
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 9/573 - Fours continus pour bandes ou fils métalliques avec refroidissement
A shape detection device capable of detecting meandering of a strip with high accuracy and a method thereof. The device includes a plurality of split rolls provided in a width direction of a rolling material; a table which guides the rolling material and which is rotatably supported; a fixing member supported by the table; torque detectors for separately detecting loads acting on both ends of the split rolls when the rolling material comes in contact with the split roll as moments; supporting arms of which one end rotatably supports the split roll and the other end is supported by the fixing member through the torque detectors; a meandering amount computing unit for computing a meandering amount of the rolling material using the moments detected by the torque detectors, and a plate shape computing unit for computing a plate shape of the rolling material using the moments and the meandering amount.
In a cold rolled material production equipment, a strip storage device (50) is provided. The strip storage device (50) is disposed between connection means (23) and rolling machines (10a, 10b). The connection means (23) connects the tail end of a preceding coil (25b), disposed on the exit-side of an unwinding device (21a) for unwinding a hot rolled coil after pickling, to the leading end of a following coil (22a) unwound from the unwinding device. The strip storage device (50) stores a strip S for continuously carrying out rolling by the rolling machines during the connection of the preceding coil to the following coil by the connection means. The rolling machines (10a, 10b) roll the preceding and following coils, in such a state that the tail end of a preceding coil (25b) has been connected to the leading end of a following coil (22a), unidirectly in a continuous manner. The cold rolled material production equipment further comprises a strip cutting device (28) for cutting the strip into desired length, a winding device (24) for winding the rolled coil, transfer means (30) for transferring the coil extracted from the winding device to unwinding devices (21a, 21b) for repeatedly rolling the coil until the product sheet reaches a desired thickness, and a rolling speed control unit (40) for controlling the rolling speed during connection of the preceding coil to the following coil so that the rolling speed is lower than the steady rolling speed.
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
49.
SEALING APPARATUS AND STRIP PLATE CONTINUOUSLY ANNEALING EQUIPMENT
A sealing apparatus that enhances sealing performance and reduces the amount of sealing fluid used, thereby attaining cost reduction; and a relevant strip plate continuously annealing equipment. Accordingly, ambient gas (Gn,Gh) consisting of nitrogen gas and hydrogen gas having flowed out from the interiors of heating zone (2) and quenching zone (3) is suctioned through slit (25a,25b) and mixed together. Mixed gas (g) resulting from the mixing is replenished with nitrogen gas so that the mixed gas has the same composition as that of ambient gas (Gn), and after this component regulation, the mixed gas is recycled into the heating zone (2).
A rolling mill in which dynamic rigidity in the horizontal direction during rolling is increased to suppress vibration, making the rolling highly efficient. The rolling mill has a housing (11), a pair of upper and lower work roll chucks (12, 13) supported by the housing (11), a pair of upper and lower work rolls (14, 15) supported by the upper and lower work roll chucks (12, 13) and facing each other, hydraulic cylinders (25) for pressing the work roll chucks (12, 13) from the direction horizontal to and crossing perpendicular to the axes of the work rolls, hydraulic pressure supply and discharge pipes (56, 57) connected to the head sides and the rod sides of the hydraulic cylinders (25) and supplying and discharging oil, and restriction sections (58, 59) formed in the hydraulic pressure supply and discharge pipes (56, 57). During the rolling, the oil is supplied to both the head sides and the rod sides of the hydraulic cylinders (25) through the hydraulic pressure supply and discharge pipes (56, 57).
A method and a device for aligning the widths of preceding and following metal plates in which a curve can be corrected in the vicinity of a joint by reducing width mismatching at the bonding position of the preceding and following metal plates as much as possible. For that purpose, a device (3) for bonding the trailing edge of a preceding sheet bar (9) and the leading edge of a following sheet bar (6) when they are traveling in the pass line direction, first and second curve measuring instruments (20, 21) for detecting curved states at the trailing edge of a preceding sheet bar and the leading edge of a following sheet bar prior to bonding, fourth and fifth longitudinal pair rollers (25, 26) for shifting at least one of the preceding sheet bar and the following sheet bar in the width direction at the bonding position, and a controller (30) performing drive control of the fourth and fifth longitudinal pair rollers to reduce the deviation in the center position in the width direction between the trailing edge of a preceding sheet bar and the leading edge of a following sheet bar at the bonding position based on the detection signals from the first and second curve measuring instruments are provided.
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
A cold continuous rolling facility, comprising a tandem rolling machine (11) for joining a plurality of hot rolled coils, correcting distortion of the joined hot rolled coils through a tension leveler (7), removing surface scale by passing them through an acid pickling facility (8), and rolling them continuously by means of two or more rolling machines, is provided, as rolling machines, with one or more work roll shift mills (10) each having a movable up/down work roll which is provided, at the distal end thereof, with a tapered roll crown. Furthermore, an edge drop gauge (2a) is provided between the tension leveler (7) and a tension bridle roll (3) provided on the inlet side of the acid pickling facility (8).
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 37/28 - Commande de la planéité ou du profil pendant le laminage de bandes, de feuilles ou de tôles
B21B 38/02 - Procédés ou dispositifs de mesure spécialement adaptés aux laminoirs, p. ex. détection de la position, inspection du produit pour mesurer la planéité ou le profil des bandes
53.
CROP PROCESSOR AND CROP PROCESSING METHOD AND CONTINUOUS ROLLING FACILITY AND CONTINUOUS ROLLING METHOD
When the trailing end of a preceding stripe metal plate (6) and the leading end of a following stripe metal plate (9) are bonded, crops (38, 39) are generated at the joint. The crop processor comprises an upper tapping cutter (75) and a lower tapping cutter (74), wherein the shear side (38a) of the upper crop (38) at the joint is tapped by the upper tapping cutter (75) and the shear side (39a) of the lower crop (39) is tapped by the lower tapping cutter (74), thus removing the upper and lower crops (38, 39).
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
B21B 1/26 - 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 continu par laminage à chaud
54.
JOINING METHOD OF HIGH CARBON STEEL FOR ENDLESS HOT ROLLING AND THE APPARATUS THEREFOR
An endless hot rolling material shear-joining method capable of threading hot rolling materials in a finish rolling process without strip breakage by controlling joining conditions for the hot rolling materials in an endless hot rolling process for high carbon steel, and an endless hot rolling plant therefor are disclosed. The shear-joining method for endless hot rolling materials of high carbon steel includes shear-joining high carbon steel metal bars comprising, in terms of weight %, 0.30% to 1.20% C, inevitable impurities, and balance Fe, or comprising 0.15% to 1.5% C containing at least one of Cr, Ni, Mo, V, Ti, W, B, Nb, and Sb, inevitable impurities, and balance Fe, such that a joined surface of the joined metal bars is formed to be inclined in a thickness direction of the metal bars, in a hot rolling plant by a joiner adapted to join the metal bars after overlapping tail part of a leading one of the metal bar and top part of a traling metal bar.
B23K 20/02 - Soudage non électrique par percussion ou par une autre forme de pression, avec ou sans chauffage, p. ex. revêtement ou placage au moyen d'une presse
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
Produits et services
Machines and machine tools; motors and engines (except for land vehicles); machine coupling and transmission components (except for land vehicles); agricultural implements other than hand-operated; incubators for eggs. Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus. Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes.
