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1. 发明专利

JPH01177910A DETERMINATION OF MATERIAL SIZE IN MATERIAL SHEARING DEVICE 失效
公开(公告)号：JPH01177910A
公开(公告)日：1989-07-14
申请号：JP33562487
申请日：1987-12-28
申请人： ISHIKAWAJIMA HARIMA HEAVY IND , NIPPON STEEL CORP
发明人： SATO HIROYUKI , FUJISAWA YOSHIHISA , TAMAGAWA YOSHIHIKO
IPC分类号： B23D33/10 , B65H9/06
摘要： PURPOSE:To position and determine the sizes of a plurality of long matters of a predetermined length at the same time by moving a stopper positioning carriage in parallel to the material feed direction corresponding to shearing lengths and moving each predetermined stopper along the width to apply it to the forward end of a material. CONSTITUTION:A stopper positioning carriage 4 is moved by a monitor to run in parallel to a material feed direction D1 on rails through a speed reducer 8, a pinion 18, a rack 19, a wheel 6 to be stopped at a predetermined position corresponding to a shearing length. Then stopper frames 22-1-22-5 and elevating stopper frames 25-1-25-5 are moved in a width direction D2 by speed reducing motors 20-1-20-5 through screw shafts 21-1-21-5 to be stopped at predetermined positions. Stoppers 29-1-29-5 are moved in parallel to the feed direction D1, and the predetermined elevating stopper frames 25-1-25-5 are moved down with the predetermined stoppers 29-1-29-5 by a hydraulic cylinder. Materials 31-1-31-5 are applied to the stoppers 29-1-29-5 at their forward ends to be positioned, thereby the length from a shear 30 to the stoppers are adjusted to be as predetermined.

2. 发明专利

JPH01177909A DETERMINATION OF MATERIAL SIZE IN MATERIAL SHEARING DEVICE 失效
公开(公告)号：JPH01177909A
公开(公告)日：1989-07-14
申请号：JP33562387
申请日：1987-12-28
申请人： ISHIKAWAJIMA HARIMA HEAVY IND , NIPPON STEEL CORP
发明人： SATO HIROYUKI , KUWANO HIROAKI , FUJISAWA YOSHIHISA , TAMAGAWA YOSHIHIKO
IPC分类号： B23D33/10 , B65H9/06
摘要： PURPOSE:To facilitate manufacture of long matters of many sorts in small quantities by positioning predetermined stoppers in the top surface of a transferrer for determining the sizes from a shear to each stopper as predetermined. CONSTITUTION:As a stopper positioning carriage 4 moves in parallel to the material feed direction corresponding to material shearing length, stoppers 29-1-29-5 in the stopper positioning carriage 4 move in the material feed direction and along the width of a transferrer while moving down, so the stoppers 29-1-29-5 are positioned. The forward ends of materials fed by the transferrer are then applied to the stoppers 29-1-29-5 to make predetermined sizes, and the plurality of materials 31-1-31-5 are sheared together, so a plurality of long matters of predetermined lengths can be obtained at the same time. By thus determining the sizes of the materials 31-1-31-5 to be desired lengths, manufacture of long matters of many sorts in small quantities can be performed easily.

3. 发明专利

JP2002069580A HIGH STRENGTH ROLLED PC STEEL BAR AND ITS PRODUCTION METHOD 失效
公开(公告)号：JP2002069580A
公开(公告)日：2002-03-08
申请号：JP2000270550
申请日：2000-09-06
申请人： NIPPON STEEL CORP
发明人： ISHIKAWA HAJIME , NISHIDA TSUGUNORI , TAMAGAWA YOSHIHIKO , SAITO HITOSHI
IPC分类号： B21F99/00 , C21D8/08 , C22C38/00 , C22C38/04 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high strength rolled PC steel bar having YS (0.2% proof stress) of >=1,200 MPa, TS of >=1,400 MPa and elongation of >=4.5%. SOLUTION: This steel bar consists of steel containing, by mass, 0.8 to 1.3% C, in which the area ratio of pearlite is >=80%, and further, whose surface is subjected to indenting and has YS (0.2% proof stress) of >=1,200 MPa, TS of =4.5%. The steel bar moreover contains 0.10 to 2.5% Si and 0.25 to 2.0% Mn and suitably contains one or more kinds of Al, Ti, Ca, rare earth metals, V and Nb and/or one or more kinds of B, Cr, Cu, Ni and Mo. A wire rod having the composition is isothermally transformed at 450 to 650 deg.C, is subjected to indent machining, is imparted with strain of 1 to 4% thereto, and then is subjected to blueing treatment at 200 to 500 deg.C for 5 to 600 sec, thereby obtaining the objective steel bar.

4. 发明专利

JPH10314820A METHOD FOR CONTROLLING COILING TEMPERATURE OF WIRE 失效
公开(公告)号：JPH10314820A
公开(公告)日：1998-12-02
申请号：JP13116897
申请日：1997-05-21
申请人： NIPPON STEEL CORP
发明人： SAITO HITOSHI , TAMAGAWA YOSHIHIKO , HORIKOSHI KIYOMI
IPC分类号： B21B45/02 , B21B37/00 , B21B37/74 , C21D9/52
摘要： PROBLEM TO BE SOLVED: To suppress fluctuation of the coiling temp. accompanying variation in rolling speed, to stabilize variation of tensile strength and properties of scale and to improve manufacturing cost by executing feedforward control of the quantity of cooling water in a watercooling zone by differential type control whose control action is faster. SOLUTION: By the deviation between the target coiling temp. directed from a process computer 11 and the measured value with a coiling thermometer 5, the quantity of cooling water is commanded with a controller 6 for temp. control, the opening degree of flow rate control valves is directed with the controller 7 for controlling the quantity of the cooling water and the feedback control of the coiling temp. is executed. The number of revolution of a finishing mill 2 is fetched from the device 10 for detecting the number of revolution of the finishing mill through a sequencer 8 for controlling water cooling into the controller 7 for controlling the quantity of cooling water and deviation from the last data is calculated for every sampling period of the number of revolution. The correction of the flow rate of cooling water is determined from this deviation and coefficients which are decided for every kind of the steel, dimensions and the coiling temp.

5. 发明专利

JPS59192152A H-shaped steel having thin web high in bending resistance 失效
标题翻译： H型薄钢板具有较高的抗弯强度
公开(公告)号：JPS59192152A
公开(公告)日：1984-10-31
申请号：JP6370183
申请日：1983-04-13
申请人： Nippon Steel Corp
发明人： HIRAMATSU HIROYUKI , NUMATA YUUZOU , TAMAGAWA YOSHIHIKO
IPC分类号： B21B1/088 , B21B1/08 , E04C3/07

6. 发明专利

JP2002069581A HIGH STRENGTH ROLLED PC REINFORCING BAR, AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2002069581A
公开(公告)日：2002-03-08
申请号：JP2000270635
申请日：2000-09-06
申请人： NIPPON STEEL CORP
发明人： ISHIKAWA HAJIME , NISHIDA TSUGUNORI , TAMAGAWA YOSHIHIKO , SAITO HITOSHI
IPC分类号： B21F99/00 , C21D8/08 , C22C38/00 , C22C38/04 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a high strength rolled PC(prestressed concrete) reinforcing bar having >=1,200 MPa YS (0.2% proof stress), >=1,400 MPa TS and >=4.5% elongation. SOLUTION: The high strength rolled PC reinforcing bar is composed of steel which has a composition containing, by mass, 0.8-1.3% C and also has a structure containing >=80% pearlite by area ratio and where ruggedness free from difference in residual stress is formed at the surface. The reinforcing bar has >=1,200 MPa YS (0.2% proof stress), >=1,400 MPa TS and >=4.5% elongation. This reinforcing bar further contains 0.10-2.5% Si and 0.25-2.0% Mn and properly contains one or more elements among Al, Ti, Ca, REM, V and Nb and/or one or more elements among B, Cr, Cu, Ni and Mo. A wire rod having the above composition is subjected to: isothermal transformation at 450 to 650 deg.C; indenting; application of 1-4% strain; and bluing treatment at 200 to 500 deg.C for 5 to 600 s.

7. 发明专利

JP2001323359A METHOD FOR PRODUCING PLATED METALLIC WIRE AND PRODUCING EQUIPMENT THEREFOR 失效
公开(公告)号：JP2001323359A
公开(公告)日：2001-11-22
申请号：JP2000142955
申请日：2000-05-16
申请人： NIPPON STEEL CORP
发明人： TAMAGAWA YOSHIHIKO , SUGIMARU SATOSHI
IPC分类号： C23C2/38 , C23C2/02 , C23C2/06 , C23C2/26 , C23G3/02
摘要： PROBLEM TO BE SOLVED: To provide a simple method for producing a plated metallic wire for a short time and at a low equipment cost by directly connecting a rolling stage to a plating stage, and to provide producing equipment therefor. SOLUTION: In producing a plated metallic wire, the gap in line speeds between a rolling stage and a plating stage is solved by rolling the metallic wire, dipping the metallic wire having a loose coil shape directly after the rolling into a plating bath as it is, taking up and cooling the wire.

8. 发明专利

JPS624133A SETTING DEVICE FOR SHAPE STEEL 失效
公开(公告)号：JPS624133A
公开(公告)日：1987-01-10
申请号：JP14022285
申请日：1985-06-28
申请人： NIPPON STEEL CORP
发明人： FUJISAWA YOSHIHISA , TAMAGAWA YOSHIHIKO , TANIWAKI TATESHIGE
IPC分类号： B65G57/18
摘要： PURPOSE:To make a bunch of shape steel bundleable to perfection without breaking its bunch form, by installing a pushing metal device, pushing up every other piece in a width direction of the shape steel, and a pusher pressing it lengthwise in a longitudinal direction, and bundling the shape steel in the bunch form at once, not conveying it. CONSTITUTION:Steel materials 9 of a portion for the number of bunched pieces are simultaneously carried in, colliding with a stopper 22 and stopping there at thus they are positioned right at a bunching position. Afterward, a step difference is put between shape steel 9-1 to be set in an upper position with a cylinder 23 of a setting machine 21 and another shape steel 0-2 to be set in a lower position, pressing the whole number of pieces in a horizontal direction by a pusher 20, whereby a bunching form is made up. Next, the shape steel 9 made up into the bunch form is bundled by a bundler 6 without being conveyed, and after bundling is over, it is conveyed by a roller table 8. During this bundling, the setting machine 21 goes down, and simultaneously with completion of the bundling, the stopper 20 is retracted, not preventing the shape steel 9 from being conveyed. Thus, a break of the bunch form is preventable.

9. 发明专利

JPS60221524A FLANGE COOLER FOR H-SHAPED STEEL 失效
公开(公告)号：JPS60221524A
公开(公告)日：1985-11-06
申请号：JP7588184
申请日：1984-04-17
申请人： NIPPON STEEL CORP , TAIHEI KOGYO KK
发明人： SUZUKI YUKIO , FUNAKURA KATSUMI , TAMAGAWA YOSHIHIKO
IPC分类号： B21B45/02 , C21D9/00
摘要： PURPOSE:To assure the rearranging operation by each shape and size and to minimize temp. difference by providing plural cooling water nozzles which are movable vertically, longitudinally and transversely in a housing box and selecting the nozzles of the injecting and cooling pattern corresponding to the flange size of each H-shaped steel. CONSTITUTION:A constituting body disposed with the plural cooling water nozzles 2, 3 which are vertically, longitudinally and transversely movable via a header piping 8 and a flexible hose 6 is disposed in a housing box 4. The large- sized H-shaped steel A is guided from a conveying roll 1 into the box 4 and is fixed by an end guide 7. The flange part of the H-shaped steel A is cooled by the selected cooling nozzles 3 meeting said steel. The middle-sized H-shaped steel B and small-sized H-shaped steel C are also similarly guided in the box 4 and the flange parts are cooled by the cooling nozzles 2 meeting the H-shaped steels C, B.

10. 发明专利

JPS609501A METHOD FOR FLANGE-WIDTH REDUCTION ROLLING IN STEEL SHAPE ROLLING 失效
公开(公告)号：JPS609501A
公开(公告)日：1985-01-18
申请号：JP11513683
申请日：1983-06-28
申请人： NIPPON STEEL CORP
发明人： HIRAMATSU HIROYUKI , NUMATA YUUZOU , TAMAGAWA YOSHIHIKO , NAWATA HIROO
IPC分类号： B21B1/08 , B21B1/088
摘要： PURPOSE:To use roughing rolls in common for rolling shapes of two or more sizes by improving roll calibers and examining pass schedules in rough-rolling rolls provided with calibers for flange-width reduction rolling. CONSTITUTION:A caliber of roughing rolls for flange-width reduction rolling is formed into a flat one to incorporate it with other calibers into a single roughing roll caliber, which is used as a common roll caliber for steel shapes of several sizes without replacing it. For instance, several sizes of shapes such as H-175X175, H-150X150, H-125X125, H-200X175, and I-200X150 can be manufactured by a roughing roll provided with a flat caliber 13 (kal13) at its central part. As the pass schedules for H-175X175, H-200X150, and I-200X150; a flat cast billet is formed into a block through four passes of kal13 and two passes of kal12, which is wedged at its web part through each one pass of kal11, 10, and a flange part is formed through two passes of kal10E, and then a beam blank is formed through one pass of kal10 to be handed over to the next rolling rolls.

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