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91. 发明专利

JPS56131002A CHANGING METHOD FOR ROLL CROWN 失效
公开(公告)号：JPS56131002A
公开(公告)日：1981-10-14
申请号：JP3277880
申请日：1980-03-17
申请人： HITACHI LTD
发明人： YASUDA KENICHI
IPC分类号： B21B1/22 , B21B13/14 , B21B27/02 , B21B27/05 , B21B37/00 , B21B37/28
摘要： PURPOSE:To arbitrarily change the roll crown equivalent to the initial crown using a roll possessing the crown of only one kind, by shifting axially a couple of rolls provided with a crown comprising an irregular curvature. CONSTITUTION:A couple of rolls, possessing a crown whose curvature is not constant all over the length of the barrel, are combined. In the case that these rolls are placed at the mill center, the initial roll crown along the sheet breadth (b) is designated as C0. If the curve of this crown is not such a uniform curve as a circular arc, the rolls are shifted by a distance (a) so as to be symmetrical in respect of the mill center; hereby, the curve of roll crown along the sheet breadth (b) changes into a curve C1. According to the present method, the complicated replacement work for the rolls becomes unnecessary, and the sheet breadth can be accurately controlled during the rolling work.

92. 发明专利

JPS5659525A SHAPE CONTROLLER 失效
公开(公告)号：JPS5659525A
公开(公告)日：1981-05-23
申请号：JP13423379
申请日：1979-10-19
申请人： HITACHI LTD
发明人： YASUDA KENICHI
IPC分类号： B21B37/00 , B21B37/38
摘要： PURPOSE:To control the shape of the rolled material, by operating the asymmetric component of the shape of the rolled material, the difference between the bending forces, and the difference between the screw positions, and by adjusting these values by the command unit. CONSTITUTION:The strip 1 is rolled by the work rolls 2, 3, and its shape on the run-out side is detected by the shape detector 6. The operator 7 extracts the asymmetrical component D depending on the signal produced from the detector 6. The computer 8 operates the optimum screw position and bending force. The computer 10 operates DS, DF, depending on information like as the rolling load (p), the sheet breadth (b), the draft percentage (r), etc., sent from the setting console 9. In respect of the symmetrical component, CS, CF, are inputted to the computer 11. The computer 11 operates the correcting values DELTAS, DELTAF. These correcting values are divided by the operators 12, 13, into + or -DELTAS/2, + or -DELTAF/2, which are respectively inputted to each of the command units for the screw position and the bending force, 14, 15, 16, 17. These command units add these inputs to the optimum screw position S and the bending force F produced from the computer 8, and produce the results to the left and right screw down devices 18, 19, and the left and right benders 20, 21.

93. 发明专利

JPS5619906A TANDEM MILL 失效
公开(公告)号：JPS5619906A
公开(公告)日：1981-02-25
申请号：JP9495579
申请日：1979-07-27
申请人： HITACHI LTD
发明人： AWATSUHARA HIROSHI , TSUMURA SUKEFUMI , YASUDA KENICHI , SHIDA SHIGERU
IPC分类号： B21B1/28
摘要： PURPOSE:The tandem mill by which the reduction of the rolling load and the interstand tension can be contrived, by constituting plural rolling stands of a rolling stand equipped with a couple of same speed work rolls and a rolling stand equipped with a couple of different speed work rolls. CONSTITUTION:The first, the third and the fifth rolling stands 11, 13, 15, for carrying out the stretch rolling work with work rolls of same speed, are alternately arranged between the uncoiling reel 4 and the coiling reel 5. By thus constituted tandem mill, the material 3 is rolled alternately by the stand equipped with the different speed work rolls and the stand equipped with the same speed work rolls. As a result, the interstand tension delta becomes like the full line of the graph, and the large tension as in the case of carrying out the stretch rolling work in all rolling stands is not generated. In the graph, the ordinate K represents the deformation resistance, and the abscissa SN represents the rolling stand resistance.

94. 发明专利

JPS55136508A CONTROLLING METHOD FOR SHEET THICKNESS UNDER CONDITION OF ROLL RUNNING AT DIFFERENT CIRCUMFERENTIAL SPEED 失效
公开(公告)号：JPS55136508A
公开(公告)日：1980-10-24
申请号：JP4434979
申请日：1979-04-13
申请人： HITACHI LTD
发明人： YASUDA KENICHI , SHIDA SHIGERU , AWATSUHARA HIROSHI , TSUMURA SUKEFUMI
IPC分类号： B21B37/18 , B21B37/46
摘要： PURPOSE:To exactly control the sheet thickness without time delay, by detecting the speed difference between upper and lower rolls, by comparing this difference with the reference speed difference, and by controlling the screw position so as to eliminate this deviation obtained from above comparison. CONSTITUTION:At rolling the material 3 by the rolling rolls 1, 2, assume that only the lower roll 2 is driven by the motor 4. The circumferential speeds V1, VD, of upper and lower rolls 1, 2, are detected by the speed meters 5, 6. Since the rolled material's outgoing speed is given by U1=(1+f1)V1=(1+fD)VD, the speed ratio is given by phi=V1/VD=(1+fD)/(1+f1). Since the forward slips f1, fD, are functions of the draft percentage gamma, if the draft percentage gamma changes, the speed ratio phi changes too. Therefore, the ratio phi is operated by the operator 7 and is compared with the set reference speed ratio phi0 by the comparator 8 to obtain the deviation DELTAphi=phi-phi0, which is multiplied by the gain by the operator 9 to give the variation DELTAS of the rolling reduction. The screw down motor 10 is controlled according to this variation DELTAS, and the screw 11 corrects the roll gap so as to make phi=0. As a result, the draft percentage is made always a constant value.

95. 发明专利

JPS5536064A ROLLING MILL 失效
公开(公告)号：JPS5536064A
公开(公告)日：1980-03-13
申请号：JP10972678
申请日：1978-09-08
申请人： HITACHI LTD
发明人： YASUDA KENICHI , SHIDA SHIGERU , AWATSUHARA HIROSHI , TSUMURA SUKEFUMI
IPC分类号： B21B13/14 , B21B13/02
摘要： PURPOSE:A small-sized and inexpensive rolling mill which is able to fully control the width direction plate thickness of rolled material by mounting an inclined roll having an inclined axis to the axis of the work roll and its inclining device in either side of one pair of work rolls. CONSTITUTION:In order to reduce a bend of work rolls 2, 3 due to rolling load, the intermediate roll 6 is made to incline in the horizontal surface, the load from the reinforced rolls 4, 5 to the part of work rolls 2, 3 which do not contact the strip 1 is reduced, and also the different plate thickness of plate width direction of the strip 1 is made to correct more effectively by the cooperative work of inclining adjustment of the roll 6 and the roll bending devices 8, 9. In case the work rolls 2, 3 and the reinforced rolls 4, 5 have the same diameter, and the up and down driving condition is same, the roll 6 can be arranged in either side, but in case the diamter of rolls 2, 3 is different and the large diameter roll 3 is driven, the intermediate roll 6 is arranged in the roll 2 side.

96. 发明专利

JPS53108863A CONTROLLING METHOD FOR PLATE CROWN OF STRIP OR THE LIKE 失效
公开(公告)号：JPS53108863A
公开(公告)日：1978-09-22
申请号：JP2376777
申请日：1977-03-07
申请人： NIPPON STEEL CORP , HITACHI LTD
发明人： NAKASHIMA HIROE , KIKUMA TOSHIO , YASUDA KENICHI , SHIDA SHIGERU , AWATSUHARA HIROSHI , TSUMURA SUKEFUMI
IPC分类号： B21B37/42 , B21B37/00
摘要： PURPOSE:To carry out a quick control for the plate crown without the time delay, by controlling the axial movement of the roll and the bending force on the roll, correspondingly to the difference between the detected rolling load and the operated rolling load.

97. 发明专利

JPS52140454A METHOD OF ADJUSTING AND CORRECTING ZERO POINT OF DEGREE OF ROLL OPENING 失效
公开(公告)号：JPS52140454A
公开(公告)日：1977-11-24
申请号：JP5828876
申请日：1976-05-20
申请人： HITACHI LTD
发明人： SHIDA SHIGERU , AWATSUHARA HIROSHI , YASUDA KENICHI , TSUMURA AKIFUMI
IPC分类号： B21B37/00 , B21B31/18 , B21B37/42

98. 发明专利

JPS52140453A METHOD OF CONTROLLING FORM IN ROLLING MACHINE 失效
公开(公告)号：JPS52140453A
公开(公告)日：1977-11-24
申请号：JP5828776
申请日：1976-05-20
申请人： HITACHI LTD , NIPPON STEEL CORP
发明人： SHIDA SHIGERU , AWATSUHARA HIROSHI , YASUDA KENICHI , TSUMURA AKIFUMI
IPC分类号： B21B37/42 , B21B31/18 , B21B37/00

99. 发明专利

JPS5297352A METHOD OF CORRECTING MEANDERING OF ROLLED MATERIAL 失效
公开(公告)号：JPS5297352A
公开(公告)日：1977-08-16
申请号：JP1405976
申请日：1976-02-13
申请人： HITACHI LTD
发明人： YASUDA KENICHI
IPC分类号： B21B37/68

100. 发明专利

JPS5258047A METHOD TO ROLL PLATES 失效
公开(公告)号：JPS5258047A
公开(公告)日：1977-05-13
申请号：JP13415675
申请日：1975-11-10
申请人： HITACHI LTD
发明人： YASUDA KENICHI , SHIDA SHIGERU , AWATSUHARA HIROSHI , TSUMURA AKIFUMI
IPC分类号： B21B37/00 , B21B37/42

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