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11. 发明专利

JP2000094027A METHOD FOR COOLING U-SHAPED SHEET PILE AND DEVICE THEREFOR 失效
公开(公告)号：JP2000094027A
公开(公告)日：2000-04-04
申请号：JP26661998
申请日：1998-09-21
申请人： NIPPON KOKAN KK
发明人： NAKASEKO MAKOTO , FUJIBAYASHI TERUO , OKAMOTO SHIGEO , TSUKAWAKI HAJIME , FUJII YUKIO
IPC分类号： B21B1/082 , B21B1/08 , B21B45/02
摘要： PROBLEM TO BE SOLVED: To greatly reduce the contact ratio of a cooling liquid to the flange parts of a U-shaped sheet pile which is placed in a reverse U-shaped posture, to enable cooling only the web part and to compress the average temp. difference between flange parts and a web part over a conventional limit. SOLUTION: At the time of cooling the web part 2 of the U-shaped sheet pile 1 which is conveyed in the reverse IL-shaped posture on the transfer line by jetting a cooling medium to the underside of the web of the high-temp. U-shaped sheet pile 1, the cooling medium is jetted from plural jet nozzles 13 which are arranged between the underside of the web of the U-shaped sheet pile 1 which is conveyed in the reverse U-shaped posture and the face of the transfer line so that uncooled parts of a prescribed width are formed between the fillets 4 of the U-shaped sheet pile 1 and colliding points of the cooling medium and the contact ratio of the cooling medium to the flanges 3 becomes

12. 发明专利

JPH09327725A METHOD AND DEVICE FOR STRAIGHTENING OF WIDE-FLANGE BEAM 失效
公开(公告)号：JPH09327725A
公开(公告)日：1997-12-22
申请号：JP14565896
申请日：1996-06-07
申请人： NIPPON KOKAN KK
发明人： TOMITA SHOGO , FUJITA YONEAKI , WATANABE MAKOTO , FUJII YUKIO
IPC分类号： B21D3/05
摘要： PROBLEM TO BE SOLVED: To obtain the straightening method of wide-flange beam to efficiently straighten to high quality by applying a rolling force from a flange outer side face to a web part with a vertical roller while pinching a fillet part of wide- flange beam with both a horizontal roller, which has its outer peripheral face tapered or crowned and a vertical roller. SOLUTION: The outer peripheral face of a horizontal roller 2 for web straightening of a roller straightening machine is tapered or crowned, the fillet part 13 of stock to be straightened is rolled down by a tapered part or crowned part. At the same time, a rolling force is applied from the flange outside face of stock to be straightened to a web part 11 by a vertical roller 3, the wide- flange beam is straightened. An arranging interval and the number of the horizontal rollers 2 and vertical rollers 3 are desirable to be arranged to each stage of conventional web rolling down rollers, but it can be possible that a pair of the horizontal rollers 2/vertical rollers 3 are arranged to only the front stage having large load, and to the post stage, the web straightening roller or flange straightening roller of the same construction as a conventional one.

13. 发明专利

JPH09314235A METHOD AND DEVICE FOR STRAIGHTENING SHAPE STEEL 失效
公开(公告)号：JPH09314235A
公开(公告)日：1997-12-09
申请号：JP12796096
申请日：1996-05-23
申请人： NIPPON KOKAN KK
发明人： TOMITA SHOGO , FUJITA YONEAKI , WATANABE MAKOTO , FUJII YUKIO
IPC分类号： B21D3/05 , B21D3/12
摘要： PROBLEM TO BE SOLVED: To facilitate the control method, and to realize the excellent accuracy and efficiency in straightening a shape steel by adding the light pressure and tension to a member to be straightened to straighten the shape steel using a light reduction rolling mill and a succeeding roller straightening machine. SOLUTION: In a straightening method, a flange part or a web part of a member 10 to be straightened is lightly reduced by upper and lower horizontal rolls 11, 12 of a light reduction rolling mill 1, and the differential speed between the light reduction rolling mill 1 and a succeeding roller straightening machine 2 is kept constant to straighten a shape steel while tension is given to the member 10 to be straightened. In the straightening method of the shape steel, the light reduction rolling mill 1 is provided with a feedback means for the tension.

14. 发明专利

JPH0857525A LIQUID FEEDING DEVICE 失效
公开(公告)号：JPH0857525A
公开(公告)日：1996-03-05
申请号：JP19689694
申请日：1994-08-22
申请人： NIPPON KOKAN KK
发明人： KARIYASU TAKAHIRO , FUJII YUKIO
IPC分类号： F28C3/00 , B21B45/02
摘要： PURPOSE: To reduce the fluctuation of a water level in a first liquid storage tank so as to enable the feeding of a fixed quantity of liquid by floating the first liquid storage tank, in which a liquid for feeding equipment is stored, in a second liquid storage tank containing other liquid. CONSTITUTION: A first water storage tank 1 floats in the liquid of a second liquid storage tank 2 and moves up and down by the change in the water level of cooling water 3 stored. In order to suppress the horizontal vibration of the first water storage tank 1, a guide rail 13 and a guide roller 12 that rotates and moves thereon are provided between the tank 1 and the second liquid storage tank 2. Cooling water 3 flows into discharge piping 9 through a movable hose 8 and feeds water by opening and closing a control valve 9. When the first water storage tank consumes the cooling water 3 and becomes light in weight with the water level lowered, it rises as the part sunk in the second liquid storage tank 2 is reduced. The water level fluctuation in the first water storage tank 1 measured from a fixed point is smaller than its own water level fluctuation. Thus, water feeding with a fixed water pressure and quantity is made possible.

15. 发明专利

JP2002224732A DEVICE FOR COOLING FLANGE OF WIDE FLANGE BEAM 失效
公开(公告)号：JP2002224732A
公开(公告)日：2002-08-13
申请号：JP2001021348
申请日：2001-01-30
申请人： NIPPON KOKAN KK
发明人： FUJII YUKIO , NAKASEKO MAKOTO , ARIMURA TSURUWA
IPC分类号： B21B45/02 , C21D1/00
摘要： PROBLEM TO BE SOLVED: To provide a cooling device which can apply stable accelerated cooling over the whole flange surface, even when a flange comes to touch a side guide caused by camber generated in a wide flange beam. SOLUTION: In a flange cooling device for the wide flange beam which, to cool the flange 2, jets cooling water on the outside flange surface 10as of the wide flange beam from multiple jetting holes 12 installed on the side guide 10 after finish rolling, the flange cooling device is equipped with caved grooves 11a outside the jetting holes 12 along the longitudinal direction of the side guide 10.

16. 发明专利

JP2002011514A METHOD AND DEVICE FOR COOLING SHAPE STEEL 失效
公开(公告)号：JP2002011514A
公开(公告)日：2002-01-15
申请号：JP2000192942
申请日：2000-06-27
申请人： NIPPON KOKAN KK
发明人： NAKASEKO MAKOTO , FUJIBAYASHI TERUO , FUJII YUKIO , MAKINOHARA MISAO , ARIMURA TSURUWA
IPC分类号： B21B45/02 , C21D1/00 , C21D9/00
摘要： PROBLEM TO BE SOLVED: To provide a method and device for cooling shape steel by which accelerated cooling is performed uniformly from the outside surfaces of flanges of the shapes in order to manufacture the shape steel having high strength and high toughness at a low cost. SOLUTION: Cooling water of the jet pressure whose jet ratio of the jet quantity of a water-cooling header at the height of the uppermost face for cooling the shapes to the jet quantity of the cooling water which is jetted from the lowermost face of the water-cooling header 2 is >=80% is supplied to the water-cooling header 2.

17. 发明专利

JP2000071014A ROLLER CORRECTING MACHINE 失效
公开(公告)号：JP2000071014A
公开(公告)日：2000-03-07
申请号：JP24471198
申请日：1998-08-31
申请人： NIPPON KOKAN KK
发明人： FUJII YUKIO
IPC分类号： B21D3/05
摘要： PROBLEM TO BE SOLVED: To make the time when a vertical roller is moved from a stand-by position to start of pressing constant by installing an ON/OFF switch valve in a pipe line for connecting an oil control hydraulic cylinder and an oil hydraulic source, and by controlling operation of the cylinder and the switch valve. SOLUTION: A fairlead fixed to a bearing box of level rollers 32a, b is reciprocated by oil hydraulic cylinders 31a, b. Oil pressure to be supplied to the oil hydraulic cylinder is controlled by pressure control valves 44a, b. Pipe lines for connecting the pressure control valves 44a, b and the oil hydraulic cylinders 31a, b are linked and shut off by first ON/OFF switch valves 45a, b. The direction of pressured oil to the oil hydraulic cylinders 31a, b is switched by direction switch valves 41a, b. A constant capacity of pressure oil is supplied to the oil hydraulic cylinders 31a, b by the oil control hydraulic cylinders 46a, b. Pipelines for connecting the cylinders 46a, b and an oil pressure source are linked and shut off by second ON/OFF switch valves 47a, b. Then, the first and second ON/OFF switch valves 45a, b and 47a, b and the like are controlled by a control means.

18. 发明专利

JP2000042634A METHOD AND DEVICE FOR STRAIGHTENING H-BEAM 失效
公开(公告)号：JP2000042634A
公开(公告)日：2000-02-15
申请号：JP20924298
申请日：1998-07-24
申请人： NIPPON KOKAN KK
发明人： FUJII YUKIO
IPC分类号： B21D3/05
摘要： PROBLEM TO BE SOLVED: To provide a method and its device for straightening an H-beam capable of making the number of possession of rolls and the number of times of rearrangement of rolls to a minimum and making the excellent straightening of a flange shape stable by controlling flange straightening force. SOLUTION: An H-beam 20 is straightened by horizontal rolls 2 arranged alternately up and down against the H-beam 20 along the advancing direction of the H-beam 20 and by vertical rolls 3 respectively arranged corresponding to the horizontal rolls 2. In this case, an inclination of the side surface of the horizontal roll 2 is controlled by regulating the deflection of a shaft 7 of the horizontal roll 2, at the same time, by controlling the shape of the outer surface of the vertical roll 3, a flange of the H-beam is pinched by the horizontal roll 2 and the vertical roll 3, then, by giving chevron-like plastic deformation to the flange, up and down bending in the direction of the height of a web is repeatedly given and further, by pressing force of the vertical roll 3, fillet parts are loaded with compressive stress.

19. 发明专利

JPH09122758A METHOD AND EQUIPMENT FOR STRAIGHTENING SHAPE 失效
公开(公告)号：JPH09122758A
公开(公告)日：1997-05-13
申请号：JP28155095
申请日：1995-10-30
申请人： NIPPON KOKAN KK
发明人： FUJII YUKIO , KOMATSUBARA MINORU , TOMITA SHOGO , MIYASATO TOSHIO , WATANABE MAKOTO , OMORI KIYOO , TAKAGI KEIJI
IPC分类号： B21D3/05
摘要： PROBLEM TO BE SOLVED: To improve the straightening effect and the reducing effect of the residual stress by giving the slight rolling reduction function to a horizontal roller of a roller straightening machine, and straightening a work to be straightened through slight rolling reduction when the work is slightly reduced. SOLUTION: A work 20 to be straightened is straightened by a roller straightening machine 1. Rolls 3, 4 on the inlet side and rolls 10, 11 on the outlet side are provided with a roll pitch changing device so that the slight rolling reduction can be performed by moving an upper roll and a lower roll to approximately same position. Intermediate rolls 5-9 are located in a staggered manner. The rolls 3, 4, 10, 11 can be used in a staggered arrangement in a normal condition. When a work 20 to be straightened with large bend is straightened, the rolls 3, 4, 10, 11 are moved by the roll pitch changing device to set the upper and lower rolls opposite to each other to realize the arrangement of a slight rolling reduction mill. The large bend of the work 20 is straightened by the rolls 3, 4 on the inlet side, and further straightened by the repeated bend by the intermediate rolls 5-9 arranged in a staggered manner, and the whole work is straightened by the rolls 10, 11 on the outlet side.

20. 发明专利

JPH059787A ROLL CLEANING DEVICE 失效
公开(公告)号：JPH059787A
公开(公告)日：1993-01-19
申请号：JP16061591
申请日：1991-07-01
申请人： NIPPON KOKAN KK
发明人： FUJII YUKIO , TOYODA CHIHARU , KUROSE SHIZUAKI , KAI SHIGETOSHI
IPC分类号： C25D7/06 , C25D17/00 , C25D17/06
摘要： PURPOSE:To keep the surface of a roll free of foreign matter deposited by spraying a chromium plating soln. on-line over the surface of a conductor roll from a spray nozzle. CONSTITUTION:A spray nozzle 16 is provided directly below a first conductor roll 8, and a chromium plating soln. is sprayed over the surface of the roll 8. The nozzle 16 is communicated with a spray header 15, and the header 15 is communicated with the discharge port of a pump 18. A chromium plating soln. in an electrolytic chromium tank 6 is sucked up to the suction port of the pump 18 through a pipeline 19. The sprayed plating soln. is received by a liq. receiving box 20, freed of foreign matter by a filter and returned to a plating tank 7. The foreign matter depositing on the conductor roll 8 surface is removed in this way, and trouble such as arc spots is prevented.

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