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71. 发明专利

JPH0446621A METHOD FOR CONTROLLING SPEED OF TANDEM ROLLING MILL 失效
公开(公告)号：JPH0446621A
公开(公告)日：1992-02-17
申请号：JP15260790
申请日：1990-06-13
申请人： KAWASAKI STEEL CO
发明人： YOSHIDA KUNIO , NOMURA NOBUAKI , TAKECHI TOSHISADA
IPC分类号： B21B37/00 , B21B37/46 , B21B37/52
摘要： PURPOSE:To realize the stable tandem rolling by measuring the speed change of the stand which speed is reduced with electric-controlling caused on the over load, and reducing the speed of the other all stands only by the rate of this speed change. CONSTITUTION:For example, if the over load is generated on the 2nd stand and the speed control device 8 controls the electric current of the motor 7, the speed command being powered finally from the speed control device 8 to the motor 7, the signal of the contact point A to close with the current control to the motor 7, and the present rolling speed outputting from the pulse generator 18 are transmitted to the MRH correcting circuit 17. So, the MRH correcting circuit 17 searches the rate of the speed change generated based on the above electric wave control with the speed control 8 at each stand, controls for reducing the speed of the other all stands with the above rate of speed change till that the value of electric current of the motor 7 of this electric current controlled stand is stabilized within the regular max. electric current (concretely 90% of the max. electric current). Therefore, the stable tandem rolling can be executed if the speed change is generated on the electric current control stand.

72. 发明专利

JPH0428403A REPAIRING METHOD OF SURFACE OF ROLL 失效
公开(公告)号：JPH0428403A
公开(公告)日：1992-01-31
申请号：JP13034690
申请日：1990-05-22
申请人： KAWASAKI STEEL CO
发明人： TAMAI TOSHIYUKI , NOMURA NOBUAKI , HIRABAYASHI TAKESHI
IPC分类号： B24B7/12 , B21B28/04 , B21B39/12
摘要： PURPOSE:To repair the surface of roll abrasively by unwinding a belt-like abrasive material which is wound into a coil-shape, delivering it to a line with rolling rolls or carrier rolls and revolving the rolls by giving speed difference from the speed of the abrasive material while winding up the tip with a winding device. CONSTITUTION:The belt-like abrasive material 1 which is wound into a coil- shape is charged into an unwinding device 2 and unwound. The abrasive material 1 is transferred with the rolling rolls 4 and table rolls 5 and the tip is wound around the winding device 3. The abrasive material 1 is fed at a speed V6 from the unwinding device 2 to the winding device 3. On the other hand, the surfaces of the rolling rolls 4 and table rolls 5 are repaired by revolving the rolling rolls 4 and table rolls 5 at the circumferential speed that speed difference is given from the speed V6 of the abrasive material. Unwinding is finished in this way and the abrasive material 1 which is wound up with the winding device 3 is in the initial state again and repeatedly usable.

73. 发明专利

JPH0215822A STRAIGHTENING APPARATUS FOR SHAPE OF HOT ROLLED STOCK 失效
公开(公告)号：JPH0215822A
公开(公告)日：1990-01-19
申请号：JP16327588
申请日：1988-06-30
申请人： KAWASAKI STEEL CO
发明人： YUZAWA HIDEYUKI , KAWASE TAKASHI , YAMAMOTO ISAMU , NOMURA NOBUAKI , TAKECHI TOSHISADA
IPC分类号： B21D1/05
摘要： PURPOSE:To improve straightening accuracy and productivity of the rolled stock, by providing a straightening roll unit having plural straightening rolls and disposing an elevating device to elevate the straightening roll unit to the rolled stock. CONSTITUTION:A hydraulic cylinder 23 is provided on the upper end of a hausing 22, the upper straightening unit 24 is connected to the lower end of the cylinder 25. On the unit 24, plural upper straightening rolls 21A, 21B are disposed. When the front end of the rolled stock 3 arrives at the hausing 22 and if a warp is existing on the rolled stock 3, the roll unit 24 is released upward by the cylinder 23. Then, when the rolled stock 3 is carried in between the units 24, 25, the upper unit 24 is moved downward to straighten the warp. Because the warp of the rolled stock 3 is straightened surely by plural rolls and straightening work time is enabled shortening, the straightening accuracy and productivity of the rolled stock 3 is improved.

74. 发明专利

JPS6453717A METHOD FOR STRAIGHTENING TIP CAMBER OF SHEET BAR 失效
公开(公告)号：JPS6453717A
公开(公告)日：1989-03-01
申请号：JP20990587
申请日：1987-08-24
申请人： KAWASAKI STEEL CO
发明人： NOMURA NOBUAKI , TOYOSHIMA MITSUGI
IPC分类号： B21D1/05
摘要： PURPOSE:To prevent the scratch of a product and to improve the flatness by bitting the sheet bar tip part by making a pinch roll in an opening state and feeding out the sheet bar in the reverse direction with the pinch roll subjected to a light rolling reduction. CONSTITUTION:A pinch roll 12 is arranged between a hot rough rolling mill 1 and the pretreatment device of a crop shear 4, descaling device 5, etc. The upper roll 12a of the pinch roll 12 is moved upwards in advance according to the camber amt. of the tip of a sheet bar 3. Then after the tip of the bar 3 passing through the pinch roll 12, the upper roll 12a is closed to form a light rolling reduction state and the bar 3 is fed out to the rolling mill 1 side with the reverse driving of the roll 12. Due to the camber of the bar 3 tip being straightened in a flat shape, the collision of the bar 3 tip and instruments is thus eliminated. Consequently the generation of the scratch of the bar 3 is prevented and the flatness is improved.

75. 发明专利

JPS61232012A ROLLING METHOD FOR CONTROLLING WIDTH OF HOT STRIP 失效
公开(公告)号：JPS61232012A
公开(公告)日：1986-10-16
申请号：JP7403085
申请日：1985-04-08
申请人： KAWASAKI STEEL CO
发明人： NOMURA NOBUAKI , ITO YASUMICHI
IPC分类号： B21B37/00 , B21B37/22
摘要： PURPOSE:To eliminate width variations for even cooled products and to increase a yield by setting the width target value within a specified length from the front end of a strip at a smaller value than the target value for the residual length of the strip. CONSTITUTION:A computer 1 containing a numerical table used to correct deviations of a plate width of products after cooling based on types of steel and a size of cooled materials 2 determines a target value, a target value changing point, and succeeding target values of the front end of the rolled material 2 at the outlet side of a rougher 3 with consideration for width variations of the rolled material 2 in a finisher 6 following the rougher 8 and a rolling schedule, and outputs those values to a width control computer 4. The width of the material 2 in a specified length from the front end of the material 2 at the outlet side of the finisher 6 is controlled to be smaller than that of the residual length of the material 2, so that the material 2 would by a winder 8 at the rear of the outlet sie of the finisher 6 and cooled has little width variation in the longitudinal direction.

76. 发明专利

JP2003136207A SYSTEM FOR MONITORING CASTING STATE OF CONTINUOUS CASTING 审中-公开
公开(公告)号：JP2003136207A
公开(公告)日：2003-05-14
申请号：JP2001342400
申请日：2001-11-07
申请人： KAWASAKI STEEL CO , KAWASAKI STEEL SYS R & D CORP
发明人： HIYAJI MASAYA , YUSA TADAHIRO , NAGAYA TOSHIMITSU , KUKUMINATO HIDEO , ARAYA MAKOTO , OGINO ATSUSHI , NOMURA NOBUAKI , TOMURA YASUO , MAEDA ICHIRO , HOSHIKA OSAMU , SHIRAISHI TAKESHI , KOGURE TAISUKE
IPC分类号： B22D11/14 , B22D11/16
摘要： PROBLEM TO BE SOLVED: To provide a system for monitoring the casting state of continuous casting which serues for monitoring by an operator by showing the casting state of molten steel into a mold on a monitor screen, in a continuous casting line. SOLUTION: This system is provided with a process, in which information on the molten steel is obtained from a host computer, a process in which the state of the mold is obtained from a sensor arranged in the inner part of and/or near the mold, a process in which the casting state of the molten steel in the mold is simulated based on the information of the molten steel and the state of the mold, and a process in which the fluidized state of the molten steel is pseudomorphically shown on the monitor screen based on the simulation.

77. 发明专利

JP2002172417A DESCALING UNIT 审中-公开
公开(公告)号：JP2002172417A
公开(公告)日：2002-06-18
申请号：JP2001366160
申请日：2001-11-30
申请人： KAWASAKI STEEL CO
发明人： NOMURA NOBUAKI , WATANABE MIKIO , IMAZEKI TOSHIO , YOSHIMURA HIROYUKI , TAKECHI TOSHISADA , FUKUI YOSHIMITSU
IPC分类号： B21B45/02 , B21B45/08
摘要： PROBLEM TO BE SOLVED: To provide a descaling unit capable of restraining the generation of deterioration in quality of a steel plate due to bypassing water leaking and dropping onto the steel plate and capable of improving workability at the time of checking and cleaning by the human labor readied inside the line and capable of maintaining the descaling unit in excellent conditions. SOLUTION: The descaling unit is provided with a header having a freely adjustable spraying angle, centering on the header shaft, and the header itself is more preferable if it is provided with a radiant heat masking structure.

78. 发明专利

JPH0976006A CONTINUOUS HOT FINISH ROLLING METHOD OF STEEL STRIP AND DEVICE THEREFOR 失效
公开(公告)号：JPH0976006A
公开(公告)日：1997-03-25
申请号：JP18058996
申请日：1996-07-10
申请人： KAWASAKI STEEL CO
发明人： SHISHIDO HIROSHI , KATAOKA KENJI , TAKECHI TOSHISADA , NOMURA NOBUAKI , TAKEBAYASHI KATSUHIRO , TAMAI YOSHIKIYO
IPC分类号： B21B37/00 , B21B37/18 , B21B37/38 , B21B37/42 , B21B37/56 , B21B37/74
摘要： PROBLEM TO BE SOLVED: To stably obtain a good thickness shape by executing shape control rolling of steel strips except joined parts with all stand. SOLUTION: A continuous hot finish rolling device is composed of a cutting machine 10, electromagnetic induction heating apparatus 20, joining device 30, flatening processing equipment 40 and tandem rolling mill 50. By using this rolling device, the rear end part 2a of the steel strip 1 through a hot rough rolling stage is partially joined to the tip part 3a of the succeeding steel strip. Successively, after the joined part is flatened with the flatening processing equipment 40, rolling is executed with the 1st stand F1 of the tandem rolling mill 50 having plural stands F1 -F7 so that compressive force acts on the unjoined part of the joined part as tracking the joined part in the longitudinal direction of the strip. Further, with the stands on and after the 2nd stand F2 , the shape control rolling of the joined part is executed and the shape control rolling of the steel strip 1 except the joined part is executed with all stands F1 -F7 . In this way, even when this method is utilized in the cold rolling of the steel strip, good thickness shape is obtained.

79. 发明专利

JP2535384B2 失效
公开(公告)号：JP2535384B2
公开(公告)日：1996-09-18
申请号：JP18449088
申请日：1988-07-26
申请人： KAWASAKI STEEL CO
发明人： NOMURA NOBUAKI , SOYA MIKIO , TAKECHI TOSHISADA
IPC分类号： B21C47/02 , B21C47/34

80. 发明专利

JPH08174012A METHOD FOR ROLLING JOINED PART 失效
公开(公告)号：JPH08174012A
公开(公告)日：1996-07-09
申请号：JP32482694
申请日：1994-12-27
申请人： KAWASAKI STEEL CO
发明人： NOMURA NOBUAKI , YOSHIMURA HIROYUKI , FUKUI YOSHIMITSU , TAKECHI TOSHISADA
IPC分类号： B21B39/14 , B21B1/26 , B21B15/00
摘要： PURPOSE: To prevent the breaking and catching accident with side guides in the rolling of a joined material from being happened. CONSTITUTION: At the time of executing endless hot rolling, by tracking a joined point, not executing edging by retreating vertical rolls 8 in the neighboring region of the joined part and, in addition, changing the setting of the side guides 12 in this region, breaking and catching accident with the side guides 12 are decreased. The opening degrees of the side guides 12 are widened in accordance with the change in the width of the joined material.

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