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21. 发明专利

JPS57103712A COMBINED-USE MULTIPLE ROLLING MILL 失效
公开(公告)号：JPS57103712A
公开(公告)日：1982-06-28
申请号：JP18050680
申请日：1980-12-22
申请人： NIPPON STEEL CORP
发明人： SAIDA SEIICHIROU , TSUJII KENICHIROU , OGAWA MASAMICHI
IPC分类号： B21B13/14 , B21B37/00 , B21B37/62
摘要： PURPOSE:To enable a temper rolling, by providing the 2nd pressurized-oil feeding path between a servo-valve and a small-type hydraulic cylinder connected to the side of an actuator, and switching pressurized-oil feeding paths mutually. CONSTITUTION:The 2nd pressurized-oil introducing pipe 10 is provided between a servo-valve 8 and a small-type hydraulic cylinder 9 provided to the side of an actuator 6. In ordinary cold rolling; solenoid valves 11, 12, 13 are positioned at A side and solenoid valves 14, 15, 16 at B side, and are controlled, hereby a pressurized oil from the valve 8 is fed to the actuator 6 through a line-1 pressurized-oil introducing pipe 7a to actuate a screw-down rack 5, by shutting off the flow-path of oil to the cylinder 9, so as to perform the rolling. Next, in temper rolling of small rolling force; the position-controlling is made by switching the positions of valves 11, 12, 13 to the B side and those of valves 14, 15, 16 to the A side so as to perform the temper rolling.

22. 发明专利

JPH08319540A IRON-NICKEL ALLOY SHEET EXCELLENT IN RESISTING PROPERTY AND ITS PRODUCTION 失效
公开(公告)号：JPH08319540A
公开(公告)日：1996-12-03
申请号：JP12197395
申请日：1995-05-19
申请人： NIPPON STEEL CORP
发明人： SATSUNOKI TOMIO , OGAWA MASAMICHI , UCHIDA TOSHIHIKO
IPC分类号： C22C19/03 , C22C30/00 , C22C38/00 , C22C38/08 , H01J29/07
摘要： PURPOSE: To produce an Fe-Ni alloy sheet for shadow mask, excellent in resisting property and product yield, by specifying respective contents of Ni, C, Si, Al, and O and also specifying sheet thickness, surface roughness, and surface oxygen concentration area, respectively. CONSTITUTION: This alloy sheet is an Fe-Ni alloy sheet having a composition containing, by weight, 30-52% Ni, Å% oxygen concentration area in a surface oxide film, and further, the occurrence of striped irregularity and inferior resisting can be prevented in the shadow mask manufacturing process. This Fe-Ni alloy sheet can be obtained by cold rolling a strip with the composition to

23. 发明专利

JPS643561B2 失效
公开(公告)号：JPS643561B2
公开(公告)日：1989-01-23
申请号：JP16921084
申请日：1984-08-15
申请人： NIPPON STEEL CORP
发明人： MATSUMOTO TADAHISA , NOGUCHI SAKAE , OGAWA MASAMICHI , NAHATA KAZUMI , MINAMINO SHIGERU , HAYASHI NAOYUKI
IPC分类号： B21B27/00 , B21B1/22 , B21B3/02 , B21B13/14

24. 发明专利

JPS59225886A BUTT CONNECTING METHOD OF METALLIC HOOP 失效
公开(公告)号：JPS59225886A
公开(公告)日：1984-12-18
申请号：JP9956183
申请日：1983-06-06
申请人： NIPPON STEEL CORP
发明人： OGAWA MASAMICHI
IPC分类号： B23K9/025 , B23K9/00 , B23K31/00
摘要： PURPOSE:To prevent bending of a hoop in a post stage by giving an arc-shaped notch to each transverse end of the hoops spaced by a specific distance from the weld line thereby decreasing a difference in mechanical strength between the base metal part and the welded part. CONSTITUTION:The longitudinal end faces of hoops are butt-welded and arc- shaped notches 3 are provided at four points at the transverse ends of the hoop spaced by a distance l of 10-30% of the width from a weld line 1. The depth of each notch 3 is made preferably about 2-4 times the depth of the arc-shaped notches 2 provided at both ends of the weld line. The radius of curvature of each notch 3 is made preferably equal to or smaller than the radius of curvature of the notch 2.

25. 发明专利

JPS5833111A METHOD FOR MEASURING SLIP BETWEEN ROLLS IN ROLLING MILL 失效
公开(公告)号：JPS5833111A
公开(公告)日：1983-02-26
申请号：JP13138881
申请日：1981-08-21
申请人： NIPPON STEEL CORP
发明人： MATSUDA TOMOO , NAHATA KAZUMI , OGAWA MASAMICHI , MORISHITA YOSHIAKI
IPC分类号： B21C51/00 , B21B38/00 , G01B21/06
摘要： PURPOSE:To measure the slip between a driving roll and a working roll highly accurately, by counting pulses which are synchronized with the rotation of the driving roll, with the period, at which a rotating signal generating part provided in the working roll crosses the vicinity of a displacement gage, as a counting interval. CONSTITUTION:A working roll rotating signal VW is generated by the fact that the rotating signal generating part 3 that is provided at one end of the working roll 2 passes the vicinity of the displacement gage 4 by the rotation of the working roll 2. The signal VW is imparted to a tracking filter 7. A rotating signal VW buried in noises is extracted. The pulse signal is sent out as a read out signal for memory 10 with respect to a counter 9 and as a reset signal for the counter 9 through a delay circuit 11, via a rising detector 8. Meanwhile, the pulse synchronized with the rotaion of the driving roll 1 are outputted from a pulse generator 6 and sent to a processor 13 through the counter 9 and the memory 10. A parameter which is required to determined the number of pulses when the slip is not present is sent from an operating board 12. Then the slip quantity S is computed, and the slip between rolls is measured highly accurately.

26. 发明专利

JPS57171505A MULTIPLE STAGES ROLLING MILL 失效
公开(公告)号：JPS57171505A
公开(公告)日：1982-10-22
申请号：JP5701781
申请日：1981-04-17
申请人： NIPPON STEEL CORP
发明人： SAIDA SEIICHIROU , TSUJII KENICHIROU , OGAWA MASAMICHI
IPC分类号： B21B13/14 , B21B37/60
摘要： PURPOSE:To provide skin pass rolling function as well by providing a main screw down cylinder and a light screw down cylinder in place of a rotary actuator and making body cylinders disconnectable. CONSTITUTION:First, a solenoid valve 22 is controlled of position to the side (b) to feed pressure oil to check valves 23a, 23b, and check valves 24a, 24b are shut off to supply the pressure oil from a servocontrol valve 8 to the lower side of a main screw down cylinder 9 entirely through the 1st pressure oil conduit 7a. At this time, a pin 18 is beforehand removed and therefore a light screw down cylinder rod 12 is not connected to a screw down rack 5, and screw down force is exerted upon rolling rolls 1 by a main screw down cylinder rod 11. The valve 22 is controlled of position to the side (a) to feed pressure oil to the valves 24a, 24b and the valves 23a, 23b are shut off. If a pin 15 is beforehand removed, only the rod 12 operates to exert refined screw down force to the rolls 1.

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