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71. 发明专利

JPH09327715A STRIP TENSION CONTROL METHOD IN STECKEL MILL AND DEVICE THEREFOR 失效
公开(公告)号：JPH09327715A
公开(公告)日：1997-12-22
申请号：JP15104996
申请日：1996-06-12
申请人： NISSHIN STEEL CO LTD
发明人： MURATA NOBUO
IPC分类号： B21B1/32 , B21B1/36 , B21B37/00 , B21B37/68 , B21C47/00
摘要： PROBLEM TO BE SOLVED: To easily execute correction of meandering of a strip by inclining a pinch roll arranged to a furnace coiler and executing inclined tension control with the pinch roll. SOLUTION: The method and device for strip tension control in the steckel mill is provided with cylinders 120a, 120b to the bearing part of pinch rolls 114, 116 of furnace coiler parts 3, 3a, by detecting the tension at the width direction of a strip 4 at each cylinder 120a, 120b and inclining the pinch rolls 114, 116 in the width direction of strip 4 with using each cylinder 120a, 120b, a ratio of the tension of at the end part in strip width direction is changed.

72. 发明专利

JPH09308905A ELECTRIC HEATING TYPE METALLIC STRIP ROLLING MILL 失效
公开(公告)号：JPH09308905A
公开(公告)日：1997-12-02
申请号：JP27334596
申请日：1996-10-16
申请人： KIYONIN SPECIAL METAL CO LTD
发明人： KIMU SUTANISURAFU KEE , ANISHIMOFU EDOWAADO AI , KUCHIENKO SERUGEE EI , PETOROCHIENKO YURI ENU , SUTAARIN ANDOREI WAI , POTSUNESENSUKII BUARERII BUI , JI UON GUTSUKU , NO HIYON MIN
IPC分类号： B21B27/02 , B21B1/00 , B21B1/22 , B21B1/34 , B21B1/36 , B21B3/02 , B21B13/14 , B21B27/06 , B21B27/08 , B21B31/04 , B21B31/07 , B21B31/18 , B21B31/24 , B21B45/00 , B21B45/02
摘要： PROBLEM TO BE SOLVED: To provide an electric heating type rolling mill improved in productivity and availability of energy without overheating its stand. SOLUTION: This rolling mill is provided with strip coiling devices 2a, 2b before a metallic strip S is supported, power supply device 6, 7, a roll stand 4 having a receiving base, a roll supporting frame fastened by studs, a pair of back-up rolls which are freely rotatably supported by the roll supporting frame, a pair of work rolls which are freely rotatably supported by the roll supporting frame and positioned between the back-up rolls and a driving device for driving the back-up rolls, a means for directly impressing electricity from the power supply devices 6, 7 to the surface of one roll of a pair of work rolls and conducting the electricity which is directly impressed from the other roll to the outside, and a strip cooler 5 for cooling the metallic strip S in the rear of the roll stand 4.

73. 发明专利

JPH0459112A METHOD FOR CONTROLLING CROWN ON COLD ROLLING OF REVERSE MILL 失效
公开(公告)号：JPH0459112A
公开(公告)日：1992-02-26
申请号：JP17012890
申请日：1990-06-29
申请人： NISSHIN STEEL CO LTD
发明人： AIZAWA ATSUSHI , HARA KENJI , YAMADA TOSHIRO , TAKAGI ICHIU
IPC分类号： B21B1/32 , B21B1/36 , B21B13/02 , B21B13/14 , B21B27/02 , B21B37/00 , B21B37/40 , B21B37/42
摘要： PURPOSE:To improve the working efficiency for controlling the crown by specifying the shifting position of the work roll and setting it on the cold rolling of the reverse mill. CONSTITUTION:The taper effect quantity ( h) displaying the good state at each pass of the cold rolling of the reverse mill is caluculated with the equation. Here, (ah+b) is the constant decided with the roll dimension of the rolling mill, WRT is the value decide with the taper angle (theta) of the work roll, WRdelta is the shifting position of the work roll. By moving the work roll to its axial direction in the range that this taper effect quantity is made respectively to be under than 1% of the outlet side sheet thickness (h), the shifting is distributed and decided. Therefore, the taper effect quantity of each pass can be easily controlled and the working efficiency is improved.

74. 发明专利

JPH0339417A METHOD FOR COLD-ROLLING ELECTRICAL STEEL SHEET 失效
公开(公告)号：JPH0339417A
公开(公告)日：1991-02-20
申请号：JP17397389
申请日：1989-07-07
申请人： NIPPON KOKAN KK
发明人： OZAKI DAISUKE , IZUSHI TOMOYA , ANDO HITOSHI , JITSUKAWA MASAHARU , TANABE SHUNICHI
IPC分类号： B21B1/22 , B21B1/36 , B21B3/02 , B21B37/40 , C21D7/02
摘要： PURPOSE:To execute cold-rolling to an electromagnetic steel sheet into profile having good cross section in the sheet by adjusting angle of tapered part at one side of working roll and overlapping length of the tapered part and sheet end part according to (Si+Al) content in the electrical steel sheet to be rolled. CONSTITUTION:At each one side of barrel part in the upper and lower working rolls 1a, 1b, the linear tapered part 2 is formed so as to be point symmetry between both rolls and both rolls are made shiftable in the arrow mark roll axes direction. By using this rolling mill, the cold-rolling is executed to the electrical steel sheet 3. In the above rolling method, the angle of the above tapered part 2 and the overlapping length of the tapered part 2 and sheet end part in the sheet width direction are adjusted according to (Si+Al) content in the above steel sheet 3 to be rolled. By this method, without developing breakage of the sheet, crack of the sheet end part, edge drop, etc., the electrical steel sheet 3 is rolled to obtain the profile of good cross section in the sheet.

75. 发明专利

JPS63171203A CONTINUOUS COLD ROLLING METHOD 失效
公开(公告)号：JPS63171203A
公开(公告)日：1988-07-15
申请号：JP51587
申请日：1987-01-07
申请人： NIPPON STEEL CORP
发明人： YAMAMOTO HIROYASU
IPC分类号： B21B37/26 , B21B1/28 , B21B1/36 , B21B5/00 , B21B15/00 , B21B37/00 , B21B37/16 , B21B39/08 , B21B41/00
摘要： PURPOSE:To improve yield and productivity by rolling a looped sheet material down to a prescribed sheet thickness while circulating said material in a rolling equipment train and setting and changing a roll gap, inlet side tension and outlet side tension at every pass. CONSTITUTION:The sheet material S is let off from a reel 7. The let off sheet material is cut when the front end thereof arrives at a shearing machine 9 by passing the shearing machine 9, a welding machine 11, bridle rolls 13, 3, 5, a looper 15, and a rolling mill 1. The cut part thereof constitutes the rear end part of the sheet material S. The front end part of the sheet material S and said rear end part are welded by the welding machine 11 to form the loop of the sheet material S. Rolling is started after formation of the loop and is continuously executed from one lass to prescribed passes. The rolling speed is lowered at every change of the passes and the setting of the roll gap, the inlet side tension nd outlet side tension is changed. The material S is sheared by the shearing machine 9 when the rolling progresses to the prescribed sheet thickness. The sheared material is taken up on a reel 7.

76. 发明专利

JPS63140724A METHOD FOR CONTROLLING REEL MOTOR OF REVERSIBLE ROLLING MILL 失效
公开(公告)号：JPS63140724A
公开(公告)日：1988-06-13
申请号：JP28927386
申请日：1986-12-04
申请人： SUMITOMO METAL IND
发明人： UEDA ICHIRO , KONDO KATSUYA
IPC分类号： B21B37/46 , B21B1/36 , B21B37/00 , B21B37/54 , B21C47/00
摘要： PURPOSE:To stably perform the tension control of a strip by controlling a reel motor by current after starting a rolling and changing over to the control of rotary speed based on the reference value by a specific equation at the time when a line speed exceeds a specific value. CONSTITUTION:In a reversible rolling mill 1 provided with the reels 2, 3 for winding and rewinding at the inlet and outlet sides gates g2, g3 are opened until reaching a certain line speed after rolling start with a plate passing and the current control of reel motors M2, M3 is performed by field current controllers 12, 14 and armature current controller 52, 53. The reference value V0 of the rotary speed of the reel is thereafter found by an equation V0=pi.N0 D0/MRH0 based on the reel motor rotary speed N0, the upper coil of the reel diameter D0 and the line speed reference value MRH0 of the time when the line speed exceeds the specific value. Based on this reference value V0, the line speed reference value MRH thereafter and the coil diameter D, a reel motor rotary speed reference value NR is fund by the equation Nr=V0.MRH/D. Based on this reference value Nr, the gates g2, g3 are closed to control the rotary speed of said motor M2, M3.

77. 发明专利

JPS63104704A METHOD OF MANUFACTURING METALLIC TAPE THROUGH ROLLING TREATMENT AND ROLL ROW 失效
公开(公告)号：JPS63104704A
公开(公告)日：1988-05-10
申请号：JP18130887
申请日：1987-07-22
申请人： BWG BERGWERK WALZWERK
发明人： ANDOREASU NOE , OSUKARU NOE , RORUFU NOE
IPC分类号： B21B1/22 , B21B1/36 , B21B15/00 , B21B39/08 , B21D1/05

78. 发明专利

JPS6368212A DESCALING METHOD FOR HOT ROLLING STEEL STRIP 失效
公开(公告)号：JPS6368212A
公开(公告)日：1988-03-28
申请号：JP21086686
申请日：1986-09-08
申请人： SUMITOMO METAL IND
发明人： SASAKI TSUYOSHI
IPC分类号： B21B1/36 , B21B13/02 , B21B15/00 , B21B27/05 , B21B31/18 , B21B37/28 , B21B37/34 , B21B37/42 , B21B45/06
摘要： PURPOSE:To contrive to improve a descaling property of a strip edge part and to prevent a local wear of a rolling roll by reduction rolling an central part in a width direction of a steel strip with a specified rolling reduction harder than an edge part to reduce a crown. CONSTITUTION:A hot rolling steel strip 1 is subjected to rolling reduction by rolling reduction of 0.2-10% through a rolling mill 2, descaled from the surface of the steel strip 1 is a pickling vessel 3, then taken up as a descaled steel strip 4. In the stage of the rolling reduction, because the middle part in the width direction of the steel strip 1 is subjected to rolling reduction harder than the edge part to reduce the crown, a crown controller 5 is provided. On the inlet side of the rolling mill 2 or the outlet side or both the sides of the pickling vessel 3, a scale thickness meter 6 is provided to input a detected signal to the crown controller 5. The control device 5 controls the rolling mill 2 based on a set value and the detected value. As a result, the tensile stress is generated on the edge part, the cracks are generated on the relatively thick scale of the edge part, the descaling at the pickling on the succeeding stage is easily performed.

79. 发明专利

JPS6215285B2 失效
公开(公告)号：JPS6215285B2
公开(公告)日：1987-04-07
申请号：JP12496678
申请日：1978-10-11
申请人： ISHIKAWAJIMA HARIMA HEAVY IND
发明人： MYASAKA KYOTO , IWANAMI NORIO
IPC分类号： B21B1/22 , B21B1/30 , B21B1/36

80. 发明专利

JPS6150682B2 失效
公开(公告)号：JPS6150682B2
公开(公告)日：1986-11-05
申请号：JP6690781
申请日：1981-05-06
申请人： NIPPON STEEL CORP
发明人： TSUJII KENICHIRO , SAIDA SEISHIRO
IPC分类号： B21B1/36 , B21B1/22 , B21B13/00 , B21B13/14

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