摘要:
A material 1 to be shaped is reduced and formed by bringing dies with convex forming surfaces, when viewed from the side of the transfer line of the material 1, close to the transfer line from above and below the material 1, in synchronism with each other, while giving the dies a swinging motion in such a manner that the portions of the forming surfaces of the dies, in contact with the material 1, are transferred from the upstream to the downstream side in the direction of the transfer line.
摘要:
There is provided a rolled plate joining apparatus equipped with a truck that can travel reversibly in the rolling direction, tailing end pinch rolls that are mounted on the truck and can be moved vertically with the tailing end of a preceding rolled plate pinched horizontally, leading end pinch rolls that are mounted on the truck and can pinch horizontally the leading end of a succeeding rolled plate, machining apparatuses for cutting one surface of the tailing end of the preceding rolled plate and the other surface of the leading end of the succeeding rolled plate, and a pressure welding apparatus for compressing the preceding rolled plate and the succeeding rolled plate with the machined surfaces of the preceding rolled plate and the succeeding rolled plate overlapped to reduce them approximately to the thickness of the rolled plates, including a tailing end centering apparatus placed between the tailing end pinch rolls and the pressure welding apparatus for pressing the opposite width ends of the tailing end of the rolled plate to align the center line of the rolled plate with the center line of the joining apparatus in the rolling direction and a leading end centering apparatus placed between the pressure welding apparatus and the leading end pinch rolls for pressing the opposite width ends of the leading end of the rolled plate to align the center line of the rolled plate with the center line of the joining apparatus in the rolling direction.
摘要:
A press apparatus for reducing widths of hot slabs comprises a pair of anvils movable toward and away from each other in width directions of the hot slabs, width reduction heads to which the pair of anvils are attached, respectively, and eccentric presses for reciprocatively driving the width reduction heads through sliders, respectively. The apparatus further comprises width adjusting means incorporated in the eccentric presses, respectively, for changing distances between the width reduction heads and the sliders. Each of the anvils has a parallel portion in parallel to a feeding direction of the hot slabs and an inclined portion on an entry side in the feeding direction. With this arrangement, the reducing distance can be set according to the desired distance of reduction in width in continuous width reduction and the reduction in width can be continuously effected with the set reducing distance with high efficiency. The press apparatus preferably further comprises buckling preventing means such as rollers controlled by hydraulic cylinders for urging at least two locations of the slab along a central longitudinal line of the slab and on upstream and downstream sides of a line connecting junctions of the parallel portions and the inclined portions of the anvils, thereby preventing any buckling of the slab occurring in reduction in width of the slab.
摘要:
A MULTIPLE CORE WIRE TRAIN FOR HEAVY COIL WEIGHTS WITH A RAPID TRAVEL SINGLE CORE ROUGHING GROUP AND A MULTIPLE CORE HEATING TROUGH FROM WHICH THE ROUGHING SECTIONS THAT ARE ROLLED DOWN TO THE USUAL BILLET DIMENSIONS OF AN EDGE LENGTH BETWEEN ABOUT 80 TO 100MM. ARE CONTINUOUSLY INTRODUCED INTO THE VACATED GROOVES OF THE FIRST MULTIPLE CORE ROLLING GROUPS. THE PASS CROSS SECTION IN THE SINGLE CORE ROUGHING GROUP MAY BE THEORETICALLY OF ANY SIZE DEPENDING ON THE NUMBER OF ROUGHING STANDS SO THAT BARS PRODUCED IN A CONTINUOUS CASTING OPERATION HAVING FOR EXAMPLE AN EDGE LENGTH OF 180MM. MAY BE ROLLED INTO WIRE IN A SINGLE PASS.
摘要:
In a method for producing a component by hot forming of a pre-product made of steel, the pre-product is heated to forming temperature and subsequently formed. The product is heated to a temperature below the AC1-transformation temperature and undergoes a strength increase prior to the heating by cold forming.
摘要:
A stainless steel slab containing B, wherein a protecting material is joined onto at least two faces across the bloom from each other in a stainless steel bloom containing B of 0.3–2.5 mass %, being integrated into one-piece by forming a weld metal comprising a stainless steel with chemical composition that satisfies the relationship expressed by following formulas (1)–(4), and a method to produce a steel product by rolling said slab. Further, it is preferable to interpose an insert material between above stainless steel bloom and above protecting material in bonding process. 15≦Cr eq≦30, (1) 4≦Cr eq−Ni eq≦17, (2) Cr eq=Cr+1.5 Si+Mo−5 B, (3) Ni eq=Ni+30 (C+N)+0.5 Mn (4) Herein, each symbol of a chemical element designates the content (mass %) of relevant chemical element contained in steel. Accordingly, it makes it possible to subject a stainless steel slab containing B to hot working without generating edge cracking, so as to be used as a source material of a neutron shielding container and a separator of a fuel cell.
摘要:
A material 1 to be shaped is reduced and formed by bringing dies with convex forming surfaces, when viewed from the side of the transfer line of the material 1, close to the transfer line from above and below the material 1, in synchronism with each other, while giving the dies a swinging motion in such a manner that the portions of the forming surfaces of the dies, in contact with the material 1, are transferred from the upstream to the downstream side in the direction of the transfer line.
摘要:
A rolled plate joining apparatus for joining rolled plates by cutting one surface of the tailing end of a preceding rolled plate and the other surface of the leading end of a succeeding rolled plate while traveling in the width direction and by overlapping the resulting cut surfaces to be joined. The joining apparatus includes machining apparatuses each having a cutter for cutting the undersurface of the tailing end and the upper surface of the leading end, a traversing apparatus for running said machining apparatuses in the plate width direction to move said machining apparatuses to waiting positions outside of the plate width, and cutter cooling apparatuses provided in said waiting positions for cooling said cutters. This application is a division of U.S. patent application Ser. No. 09/384,593, filed Aug. 27, 1999, which in turn is a division of U.S. patent application Ser. No. 08/967,903, filed Nov. 12, 1997, the entire disclosures of which are considered to be part of the present disclosure and are specifically incorporated by reference herein.
摘要:
A method of continuous compression forging, with a compression forging anvil, the final solidified region of cast steel drawn out from a mold for continuously casting, comprising the step of: compressing said cast steel with said anvil at a compressing cycle which meets the following conditions: ##EQU1## where t: the compressing cycle (sec), .delta.: the overall thickness reduction, Vc: the casting speed (mm), D: the cast steel thickness before compression forging, .theta.: the inclination angle (.degree.) with respect to the flat surface of the anvil.An apparatus for continuous compression forging continuously cast steel comprising: at least a pair of anvils for vertically holding the pass line of cast steel drawn out from a mold for continuous casting and continuously compression-forging the final solidified region of the moving cast steel by moving the anvils toward and away from each other; a frame; a slider; and links, wherein either of said anvils is disposed within said frame which has a port through which said cast steel is introduced, another anvil is secured to said slider which can be reciprocated along a sliding surface formed in said frame, and said frame and said slider are hung from a crank shaft via said links, said crank shaft acting to move said anvils toward and away from each other.
摘要:
For decreasing the width of a thin slab: a turning roll contacts the thin slab being conveyed at a certain contact angle to curve the thin slab; a tension applying device disposed in front and at the back of the turning roll, applys a tension to the thin slab forwardly and rearwardly in the direction of conveyance of the slab. Thus, the slab can be decreased in its width to a satisfactory section with no buckling loop forming portions for forming loops of the hot thin slab at the inlet and the outlet sides of the apparatus for decreasing the width of the thin slab absorb the intermittent proceeding of the hot thin slab in the direction of flow of the material. Thus, the continuous receipt and the delivery of the slab are made possible while the intermittent width decrease is performed, and the combination of the continuous casting equipment with the hot finish rolling equipment is materialized.