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 - Couplings, driving spindles, or spindle carriers specially adapted for or specially arranged in metal-rolling mills
B21B 35/12 - Toothed-wheel gearings specially adapted for metal-rolling millsHousings or mountings therefor
F16D 3/18 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts the coupling parts having slidably-interengaging teeth
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 - Making pig-iron other than in blast furnaces
F27D 17/00 - Arrangements for using waste heatArrangements for using, or disposing of, waste gases
C21B 13/00 - Making spongy iron or liquid steel, by direct processes
C21B 13/10 - Making spongy iron or liquid steel, by direct processes in hearth-type furnaces
F27B 9/24 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatmentFurnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
F27B 9/30 - Details, accessories or equipment specially adapted for furnaces of these types
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 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a continuous process by hot-rolling
B21B 1/46 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
B21B 15/00 - Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
B21B 45/00 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
B22D 11/12 - Accessories for subsequent treating or working cast stock in situ
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 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a continuous process by hot-rolling
B21B 1/46 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
B21B 15/00 - Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
B21B 45/00 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
B22D 11/12 - Accessories for subsequent treating or working cast stock in situ
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 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a continuous process by hot-rolling
B21B 1/46 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
B21B 15/00 - Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
B21B 45/00 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
B22D 11/12 - Accessories for subsequent treating or working cast stock in situ
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 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a continuous process by hot-rolling
B21B 1/46 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
B22D 11/12 - Accessories for subsequent treating or working cast stock in situ
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 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length
B21B 13/14 - Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load
B21B 29/00 - Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls
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 - Continuous casting of metals, i.e. casting in indefinite lengths
B21B 1/46 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
B21B 15/00 - Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
B22D 11/12 - Accessories for subsequent treating or working cast stock in situ
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 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
[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 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by frictionFriction welding
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 - Shearing machines or shearing devices cutting by rotary discs having rotary shearing discs arranged in co-operating pairs with several spaced pairs of shearing discs working simultaneously, e.g. for trimming or making strips
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 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by frictionFriction welding
Provided is an ironing apparatus (10) such that when winding a rolled metal foil body (1) onto an uptake roll (3), the metal foil body (1) is pressed onto the uptake roll (3) during the winding. The ironing apparatus is provided with an ironing roll (5) that presses the metal foil body (1) onto the uptake roll (3) during the winding, a shaking body (7) to which the ironing roll (5) is attached on one side, a reciprocating body (9) to which the other end part of the shaking body (7) is attached so as to be shakable, a drive apparatus (11) that moves the reciprocating body (9) back and forth in relation to the uptake roll (3), and a pressing apparatus (13) that generates a force pressing the metal foil body (1) onto the uptake roll (3). The pressing apparatus (13) exerts a force on the shaking body (7) such that the shaking body (7) shakes on the side of the uptake roll, and by this means, the metal foil body (1) is pressed to the uptake roll (3) via the ironing roll (5) attached to the shaking body (7).
B21C 47/26 - Special arrangements with regard to simultaneous or subsequent treatment of the material
B21C 47/06 - Winding-up or coiling on or in reels or drums, without using a moving guide with loaded rollers, bolts, or equivalent means holding the material on the reel or drum
B65H 18/26 - Mechanisms for controlling contact pressure on winding-web package, e.g. for regulating the quantity of air between web layers
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 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
B21B 39/14 - Guiding, positioning or aligning work
20.
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 - Methods or devices for measuring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
B21B 37/00 - Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
B21B 45/02 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
B21C 51/00 - Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses
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 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
B21B 13/14 - Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load
B21B 27/10 - Lubricating, cooling, or heating rolls externally
B21B 39/14 - Guiding, positioning or aligning work
B21B 39/16 - Guiding, positioning or aligning work immediately before entering or after leaving the pass
23.
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 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by frictionFriction welding
24.
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 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by frictionFriction welding
25.
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 - Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load
B21B 13/02 - Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
B21B 27/00 - RollsLubricating, cooling or heating rolls while in use
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 1/26 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a continuous process by hot-rolling
29.
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 - Lubricating, cooling, or heating rolls externally
B21B 1/26 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a continuous process by hot-rolling
B21B 28/04 - Maintaining rolls in effective condition, e.g. reconditioning while in use, e.g. polishing
A roller (1) for in-furnace conveyance is provided with engagement sections (30) at each of which an engagement hole (11) of a barrel section (10) and an engagement shaft (24) of a shaft section (20) are engaged with each other, and the roller is formed as a single roller by welding the engagement sections (30). The engagement sections are each provided with: a first engagement section (31) at which the engagement hole (11) and the engagement shaft (24) are engaged with each other at a position separated from the position of the weld with a predetermined gap provided therebetween; and a second engagement section (32) at which the engagement hole (11) and the engagement shaft (24) are engaged with each other at a position adjacent to the position of the weld with a gap provided therebetween, the gap being greater than that of the first engagement section.
C21D 1/00 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
F27B 9/24 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatmentFurnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
Disclosed is a multistage cluster plate mill (1) formed by facing cluster constructions (10). The cluster constructions (10) are provided with auxiliary roller axle boxes (12), central auxiliary roller axle boxes (13), beams (16), first rolling devices (19) and second rolling devices (20). The roller axle boxes (12) jointly support the first rollers (5) and second rollers (6). The central auxiliary roller axle boxes (13) are equipped independently from the auxiliary roller axle boxes (12) and support the central auxiliary roller (7). The beams (16) support the central auxiliary roller axle boxes (13), and are slideable in opposite directions together with the central auxiliary axle boxes (13). The first rolling devices (19) support the beams (16), and also slide the beams (16) and roll the central auxiliary roller axle boxes (13) in a vertical direction. The second rolling devices (20) support the auxiliary roller axle boxes (12) equipped in the beams (16) and also allow the auxiliary roller axle boxes (12) which are independent of the central auxiliary roller axle boxes (13) to slide and roll in a vertical direction.
B21B 13/14 - Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load
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 - Mechanical conveyors not otherwise provided for comprising a load-carrier moving along a path, e.g. a closed path, and adapted to be engaged by any one of a series of traction elements spaced along the path
B61D 3/16 - Wagons or vans adapted for carrying special loads
33.
METHOD AND DEVICE FOR MANUFACTURING SEPARATOR FOR POLYMER ELECTROLYTE FUEL CELL
Removal of the backlash between rolls (13) and main bearings (12) in non-shaping areas, and the shaping of a material to be shaped in shaping areas are repeatedly performed while performing removal of the backlash between the housings (10) and main bearing journal boxes (11) of the rolls (13) all the time.
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 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a non-continuous process in reversing mills, e.g. with intermediate storage reels for accumulating work by cold-rolling
B21B 15/00 - Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
B21B 37/38 - Control of flatness or profile during rolling of strip, sheets or plates using roll bending
B21C 47/00 - Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
35.
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 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by frictionFriction welding
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 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a non-continuous process in reversing mills, e.g. with intermediate storage reels for accumulating work by cold-rolling
B21B 15/00 - Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
B21B 37/32 - Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls
B21B 37/38 - Control of flatness or profile during rolling of strip, sheets or plates using roll bending
B21B 41/00 - Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curvesLoop lifters
38.
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 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by frictionFriction welding
39.
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 - Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
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 - Apparatus for spreading or distributing liquids or other fluent materials already applied to a surfaceControl of the thickness of a coating with a blast of gas or vapour
41.
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.
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 - Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses
44.
METHOD AND PLANT FOR MANUFACTURING SEPARATOR IN SOLID POLYMER FUEL CELL
A member (1A) to be molded, which has been unwound from a coil (1B) for the member to be molded by an unwinder (40) for the member to be molded, is guided to a separator-molding mill (60) while the meandering movement of the member (1A) to be molded is controlled and the angle of inclination thereof is adjusted by an approach-angle adjusting device (50). The member (1A) to be molded is introduced to an area between rollers in the separator-molding mill (60) and subjected to pressing. Thus, separators (1) are continuously molded. The tension of the separator (1), which has been molded by the separator-molding mill (60), is controlled while the separator (1) is moved forward such that both ends of the separator (1) in the width direction thereof are pinched by a pinch roller device (70). The portion of the separator (1) not including a path is cut by a flying shear (80), without the separator (1), which is moved forward by the pinch roller device (70), being stopped.
B21D 13/04 - Corrugating sheet metal, rods or profiles, or bending sheet metal, rods or profiles into wave form by rolling
B21D 43/00 - Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profilesAssociations therewith of cutting devices
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 - Resistance weldingSevering by resistance heating using roller electrodes
B21D 1/02 - Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefromStretching sheet metal combined with rolling by rollers
B23K 31/00 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups
B23K 37/08 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for flash removal
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 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups
B21D 1/02 - Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefromStretching sheet metal combined with rolling by rollers
B23K 20/12 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by frictionFriction welding
B23K 37/08 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for flash removal
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 - Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
B21C 47/34 - Feeding or guiding devices not specially adapted to a particular type of apparatus
48.
CONTINUOUS HAMMERING DEVICE FOR CONTINUOUSLY MANUFACTURING CAST PIECES
A continuous hammering device comprises a hammering member (22) for hammering a cast piece (1), compression springs (30) for biasing the hammering member toward the cast piece, a cam mechanism (32) which moves the hammering member in the direction in which the hammering member separates from the cast piece, thereby compressing the compression springs, and then allows the hammering member to move freely, and a body (14) for supporting the hammering member, the compression springs, and the cam mechanism. In hammering operation, the cam mechanism (32) is separated from the hammering member (22) and allows the hammering member to accelerate freely. By this, compression energy of the compression springs (30) is converted into kinetic energy of the hammering member (22), and the hammering member (22) collides with the cast piece (1), whereby predetermined hammering energy is applied to the cast piece.
Provided are a rolling mill capable of controlling the shape of a plate material more accurately than conventional ones, and a rolling method. The rolling mill for rolling the plate material by an upper and a lower work roll is provided with a coolant jetting unit equipped with plural nozzles disposed at predetermined intervals along the direction of the rotational axes of the work rolls to jet a coolant to the work rolls from the respective nozzles, a roll temperature estimation unit for estimating the mean temperature of the work rolls, a coolant temperature detection unit for detecting the temperature of the coolant, a shape detection unit for detecting the shape of the rolled plate material in a width direction thereof, a shape deviation calculation unit for calculating a deviation between a plate material shape detected by the shape detection unit and a target shape, and a shape control unit for controlling the shape of the plate material by controlling the jet amount and/or temperature of the coolant jetted from the coolant jetting unit on the basis of the difference between the mean temperature of the work rolls and the temperature of the coolant and the deviation between the plate material shape and the target shape.
B21B 37/32 - Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls
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 - Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load
B21B 27/00 - RollsLubricating, cooling or heating rolls while in use
Disclosed is a carrying apparatus, which comprises a plurality of carrying rollers supported in parallel at a predetermined spacing, so that a workpiece is carried from a rolling machine to the inside of a heat keeping-applying furnace by the carrying rollers. The carrying apparatus is characterized by further comprising a shock-predicting data collection unit for acquiring such data upstream of the heat keeping-applying furnace as to predict the magnitude of shocks to be applied by the workpiece to that one of the carrying rollers, which is disposed in the heat keeping-applying furnace, and a control unit for predicting the magnitude of the shocks from that data acquired by the shock-predicting data collection unit, thereby to adjust the carrying speed of carrying the workpiece in the heat keeping-applying furnace in accordance with the magnitude of the shocks.
B21B 39/00 - Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
B21B 1/26 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a continuous process by hot-rolling
B21B 45/00 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
B21C 51/00 - Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses
53.
MAGNESIUM HOT ROLLING METHOD AND MAGNESIUM HOT ROLLING APPARATUS
A magnesium hot rolling method comprises a first rolling step performing reciprocal rolling of magnesium plates (M0, M1) between an upstream side heating furnace (2) arranged on the upstream side of a rolling machine (1) for heating the magnesium plates (M0, M1) and a downstream side heating furnace (3) arranged on the downstream side of the rolling machine (1) for heating the magnesium plates (M0, M1), and a second rolling step performing reciprocal rolling of the magnesium plates (M0, M1) while retaining heat in the upstream side and downstream side ends thereof between an upstream side heat retention device (5) for carrying/heat-retaining the heated magnesium plates (M0, M1) and a downstream side heat retention device (6) for carrying/heat-retaining the heated magnesium plates (M0, M1). According to the magnesium hot rolling apparatus of the present invention and the magnesium hot rolling method employing the apparatus, quality of a product can be prevented from deterioration due to temperature variation during hot rolling of a magnesium alloy.
B21B 3/00 - Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
B21B 1/26 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a continuous process by hot-rolling
A magnesium alloy hot-rolling mill (100), in which winders (1, 2) capable of heating and heat-retaining a magnesium alloy sheet (S) in a coiled state are installed at both input and output sides of a rolling machine (3), and the magnesium alloy sheet is sequentially pressed by multiple reverse rolling operations to gradually reduce the thickness of the sheet. The rolling machine (3) has work rolls (3a) each having a surface heatable to a predetermined temperature and also has backup rolls (3b). With the mill, degradation of the quality of products due to a temperature change during hot rolling of a magnesium alloy can be prevented, the yield of the products can be increased, and the amount of production of the products can be increased.
B21B 1/32 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a non-continuous process in reversing mills, e.g. with intermediate storage reels for accumulating work
B21B 3/00 - Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
B21C 47/00 - Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
A recoiling facility of magnesium alloy sheet comprises a rewinding machine (1) for making a coil material (C) of magnesium alloy wound around a fixed mandrel rewindable, a furnace (4) for heating a magnesium alloy sheet (S) rewound from the coil material (C) to a predetermined temperature, a leveler (6) for correcting the poor profile of the magnesium alloy sheet (S), a trimmer (2) for trimming the opposite side edges of the sheet, and a winding machine (3) for rewinding the magnesium alloy sheet (S). The coil material where the magnesium alloy sheet is wound around the fixed mandrel is rewound and the fixed mandrel is removed, and then crack portion and poor profile portion occurring at the plate width end portion by multipass rolling are leveled and trimmed thus producing a high quality production coil.
A hot rolling apparatus adapted to conduct hot rolling treatment of a cupriferous metal material to thereby obtain a metal sheet. This apparatus comprises rough rolling means for, in accordance with the reciprocation of heated metal material, carrying out multiple rollings of the metal material to thereby attain forming of a metal sheet; retention heating treatment means for conducting retention heating treatment of the metal sheet formed by the rough rolling means without bending thereof at temperature lower than in heating treatment; finishing rolling means for conducting further rolling treatment of the metal sheet having been heat treated by the retention heating treatment means; cooling means for cooling the metal sheet having been rolled by the finishing rolling means; and a support table for, during the reciprocation of the metal sheet by the rough rolling means, supporting the metal material from below at locations anterior to and posterior to the rough rolling means in a fashion allowing movement of the metal material. Accordingly, not only can the quality of the metal sheet produced by the hot rolling apparatus be improved but also the speed of processing required for rolling can be enhanced.
B21B 1/26 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a continuous process by hot-rolling
B21B 45/00 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
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).
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 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for wiresHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for strips
C21D 9/573 - Continuous furnaces for strip or wire with cooling
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.
A rolling apparatus and method of controlling the shape of rolled sheet that even in extremely thin sheet rolling, can attain excellent shape control. The rolling apparatus comprises a rolling unit for performing rolling between vertically arranged work rolls (12) to thereby obtain rolled sheet (P); a shape measuring unit for measuring the shape of rolled sheet (P) obtained by rolling by means of the rolling unit in the width direction thereof; and multiple injection nozzles (32) arranged along the longitudinal direction of the work rolls (12), and further comprises spray unit (30) for spouting work roll cooling oil (C) to the work rolls (12); and a shape control unit for regulating the rate of work roll cooling oil (C) spouted from the spray unit (30) and/or the temperature thereof in accordance with the measurement information from the shape measuring unit to thereby control the shape of the rolled sheet (P). The shape control unit has two control modes conflicting to each other in the relationship of the rate of work roll cooling oil (C) spouted from the spray unit (30) and/or the temperature thereof to the measurement information from the shape measuring unit and switches the two control modes in accordance with the thickness of the rolled sheet (P).
B21B 37/32 - Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls
B21B 27/10 - Lubricating, cooling, or heating rolls externally
61.
COLD ROLLED MATERIAL PRODUCTION EQUIPMENT AND COLD ROLLING METHOD
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 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length
62.
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 - Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
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 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length
B21B 37/28 - Control of flatness or profile during rolling of strip, sheets or plates
B21B 38/02 - Methods or devices for measuring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
66.
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 - Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
B21B 1/26 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a continuous process by hot-rolling
67.
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 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
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