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1. 发明专利

DE10107679A1 未知
公开(公告)号：DE10107679A1
公开(公告)日：2001-09-13
申请号：DE10107679
申请日：2001-02-19
申请人： HITACHI LTD
发明人： NIHEI MITSUO , YASUDA KENICHI , HIRAMA YUKIO , IGARI MINORU
IPC分类号： F16C13/00 , B21B1/22 , B21B13/14
摘要： To preferably roll a hard material or an ultra thin material by more reliably supporting small diameter work rolls even under a transient condition such as when starting a rolling operation or when finishing a rolling operation, undriven both ends support rolls 9, 10, 11 and 12 are provided on outer sides of a width along which a maximum sheet width of strip passes on a barrel portion of the work roll 3, to be opposed to each other at an entry side and a delivery side of respective end portions to thereby press and support the work roll. Further, hydrostatic bearings 21 and 23 are installed at central portions of both side barrels of the work roll 3, and fluid such as oil is supplied from fluid pressure supply ports 25 and 26 to the bearing portions to thereby float up the work rolls 3 by forming gaps between the hydrostatic bearings 21 and 23 and the work roll 3 and support the work roll 3 in horizontal direction in noncontact. By changing supply pressure of the fluid supplied to the hydrostatic bearings 21 and 23, a proper float up amount and a support force can be set or controlled.

2. 发明专利

AT365591T 未知
公开(公告)号：AT365591T
公开(公告)日：2007-07-15
申请号：AT99912070
申请日：1999-03-31
申请人： HITACHI LTD
发明人： TAKAKURA YOSHIO , KAJIWARA TOSHIYUKI , YASUDA KENICHI , HIRAMA YUKIO , IGARI MINORU , NORIKURA TAKASHI , TABATA HIDEKAZU , SATOU NORIHITO
IPC分类号： B21B45/02 , B21B1/36 , B21B13/02 , B21B13/14 , B21B27/10 , F16C32/06
摘要： To improve the productivity of the cold rolling facility by providing the cold rolling facility with a strip wiper free of dust and foreign matters suitable for high-speed rolling. The wiping ability was greatly improved by floating and supporting the wiper roll by the static pressure bearing of air of two-pocket type, and by variably adjusting the load range of the floating force in response to the plate width. At high-speed rolling exceeding 700 m/min which was incapable with the conventional roll wiper or tube wiper, the productivity of the cold rolling facility and the surface quality of the strip were greatly improved by applying to the cold rolling facility the wiping device whose wiping ability is equal to or better than the tube wiper at low speeds, and its effect is very large.

3. 发明专利

DE19758035A1 Roll stand 未知
公开(公告)号：DE19758035A1
公开(公告)日：1998-07-02
申请号：DE19758035
申请日：1997-12-29
申请人： HITACHI LTD
发明人： NARITA KENJIRO , NIHEI MITSUO , YASUDA KENICHI , SAITO TAKEHIKO , HIRAMA YUKIO , SATOU KOUJI
IPC分类号： B21B13/02 , B21B27/10 , B21B31/18 , B21B13/14
摘要： The roll stand incorporates a pair of working rolls (2) for rolling the plate (1), a pair of intermediate rolls (3) and a pair of support rolls (4). The two support rolls are arranged so that their axes in a horizontal plane are not inclined relative to one another. The intermediate rolls (3) are arranged so that their axes - relative to the axes of the support rolls in a horizontal plane - are inclined in opposite directions. Lubricant delivery units (6) are provided for lubrication of the surfaces of the working, intermediate and support rolls.

4. 发明专利

DE69315099T2 未知
公开(公告)号：DE69315099T2
公开(公告)日：1998-06-10
申请号：DE69315099
申请日：1993-02-15
申请人： HITACHI LTD
发明人： YASUDA KENICHI , NARITA KENJIRO , HIRAMA YUKIO , SATOU KOUJI , YOSHIMURA YASUTSUGU , TAKAKURA YOSHIO , KAGA SHINICHI
IPC分类号： B21B13/00 , B21B1/24 , B21B1/26 , B21B1/28 , B21B13/02 , B21B13/14 , B21B27/10 , B21B37/00 , B21B37/28 , B21B37/32 , B21B37/38 , B21B37/42
摘要： In a tandem mill system, at least one first type rolling mill is arranged in the upstream side and at least one second type rolling mill is arranged in the downstream side. The first type rolling mill is of the so-called work roll crossing mill in which a pair of work rolls are inclined with respect to a pair of back-up rolls supporting the work rolls and simultaneously crossed each other in a horizontal plane to control transverse thickness distribution of a strip. The second type rolling mill is of the so-called HC mill which controls the strip crown and shape by a combination of axial movement of intermediate rolls and work roll bending. Such an arrangement makes it possible to increase a capability of controlling the strip crown and shape, particularly, a capability of correcting the quarter buckle, and eliminate a fear of causing scratches on the strip and roll surfaces, with the result of improved production efficiency. Plural lines of lubricant supply device are also provided to stop supply of a lubricant immediately before biting of the strip into the work roll crossing mill and start the supply again after the biting. A system of lubricating the work roll crossing mill is thereby improved.

5. 发明专利

DE69936403T2 未知
公开(公告)号：DE69936403T2
公开(公告)日：2008-02-28
申请号：DE69936403
申请日：1999-03-31
申请人： HITACHI LTD
发明人： TAKAKURA YOSHIO , KAJIWARA TOSHIYUKI , YASUDA KENICHI , HIRAMA YUKIO , IGARI MINORU , NORIKURA TAKASHI , TABATA HIDEKAZU , SATOU NORIHITO
IPC分类号： B21B45/02 , B21B1/36 , B21B13/02 , B21B13/14 , B21B27/10 , F16C32/06
摘要： To improve the productivity of the cold rolling facility by providing the cold rolling facility with a strip wiper free of dust and foreign matters suitable for high-speed rolling. The wiping ability was greatly improved by floating and supporting the wiper roll by the static pressure bearing of air of two-pocket type, and by variably adjusting the load range of the floating force in response to the plate width. At high-speed rolling exceeding 700 m/min which was incapable with the conventional roll wiper or tube wiper, the productivity of the cold rolling facility and the surface quality of the strip were greatly improved by applying to the cold rolling facility the wiping device whose wiping ability is equal to or better than the tube wiper at low speeds, and its effect is very large.

6. 发明专利

DE69227431T2 未知
公开(公告)号：DE69227431T2
公开(公告)日：1999-07-01
申请号：DE69227431
申请日：1992-08-14
申请人： HITACHI LTD , HITACHI NUCLEAR ENG
发明人： TAKAKURA YOSHIO , KAJIWARA TOSHIYUKI , SHIRAIWA HIROYUKI , YASUDA KENICHI , HIRAMA YUKIO
IPC分类号： B21B13/14 , B21B29/00 , B21B37/38 , B21B37/00
摘要： A rolling mill has a work roll (1), a back-up roll (2) for supporting the work roll (1) vertically and driving it. A plurality of horizontal support rollers (4,6) contact the work roll at barrel diameter outside the rolling region and at both horizontal sides of the work roll and act to fix the position of the work roll in both horizontal directions during rolling and to oppose horizontal rolling forces. In order to reduce the bending of the work roll during rolling, there are provided means for applying horizontal counterbending forces to the work roll comprising members (5,7) e.g. rollers, contacting the work roll at locations axially further from the rolling region than the support rollers (4,6) and actuator means (14) for urging the members (5,7) against the work roll. The counterbending forces being in the same direction as the net horizontal force applied to said work roll by said back-up roll and the material being rolled. Preferably at least one condition of said work roll is sensed during rolling, and there are control means acting during rolling to control the counterbending forces in dependence on the sensed condition.

7. 发明专利

BR9701168A 未知
公开(公告)号：BR9701168A
公开(公告)日：1998-12-15
申请号：BR9701168
申请日：1997-03-04
申请人： HITACHI LTD
发明人： YASUDA KENICHI , NIHEI MITSUO , HIRAMA YUKIO , TAKAKURA YOSHIO
IPC分类号： B05B15/04 , B05B1/28 , B21B1/22 , B21B27/10 , B21B45/02 , B21B1/18 , B21B1/36
摘要： An object of the invention is to provide a cold rolling mill and a cold rolling method which are able to effectively carry out rolling lubrication and cooling and roll at a high speed and under high rolling pressure while maintaining a high surface quality. Rolling lubrication oil (12) is supplied from spray headers (10) for lubrication at an inlet side of a rolling material (1), cooling water (13) is supplied onto the surfaces of work rolls (2) at an exit side of the rolling material (1), and the cooling water (13) is prevented by partition plates (11a) or jackets (17) from being scattered and adhered to the rolling material (1). Further, the rolling lubrication oil (12) and cooling water (13) are collected by a pan (3), separated by a separation tank (4) and recirculated to be used again.

8. 发明专利

DE19758035C2 未知
公开(公告)号：DE19758035C2
公开(公告)日：2003-12-18
申请号：DE19758035
申请日：1997-12-29
申请人： HITACHI LTD
发明人： NARITA KENJIRO , NIHEI MITSUO , YASUDA KENICHI , SAITO TAKEHIKO , HIRAMA YUKIO , SATOU KOUJI
IPC分类号： B21B13/02 , B21B27/10 , B21B31/18 , B21B13/14
摘要： A rolling mill is provided with a pair of work rolls 2, a pair of intermediate rolls 3 and a pair of backup rolls 4 in a mill stand 5, wherein the pair of backup rolls are arranged so that their axial lines cross perpendicularly a plate travelling direction and do not incline to the direction in a horizontal plane, the intermediate rolls and work rolls are arranged so that the axial lines of the intermediate rolls and the axial line of the work rolls incline to (cross) the axes of the backup rolls in a counter direction to each other in a horizontal plane, and a lubricant supplying apparatus 6 is provided for supplying a lubricant to the roll surfaces.

9. 发明专利

DE69227431D1 未知
公开(公告)号：DE69227431D1
公开(公告)日：1998-12-03
申请号：DE69227431
申请日：1992-08-14
申请人： HITACHI LTD , HITACHI NUCLEAR ENG
发明人： TAKAKURA YOSHIO , KAJIWARA TOSHIYUKI , SHIRAIWA HIROYUKI , YASUDA KENICHI , HIRAMA YUKIO
IPC分类号： B21B13/14 , B21B29/00 , B21B37/38 , B21B37/00
摘要： A rolling mill has a work roll (1), a back-up roll (2) for supporting the work roll (1) vertically and driving it. A plurality of horizontal support rollers (4,6) contact the work roll at barrel diameter outside the rolling region and at both horizontal sides of the work roll and act to fix the position of the work roll in both horizontal directions during rolling and to oppose horizontal rolling forces. In order to reduce the bending of the work roll during rolling, there are provided means for applying horizontal counterbending forces to the work roll comprising members (5,7) e.g. rollers, contacting the work roll at locations axially further from the rolling region than the support rollers (4,6) and actuator means (14) for urging the members (5,7) against the work roll. The counterbending forces being in the same direction as the net horizontal force applied to said work roll by said back-up roll and the material being rolled. Preferably at least one condition of said work roll is sensed during rolling, and there are control means acting during rolling to control the counterbending forces in dependence on the sensed condition.

10. 发明专利

DE19807554A1 Roll stand for rolling installations 未知
公开(公告)号：DE19807554A1
公开(公告)日：1998-09-10
申请号：DE19807554
申请日：1998-02-23
申请人： HITACHI LTD
发明人： YASUDA KENICHI , HIRAMA YUKIO , TAKAKURA YOSHIO
IPC分类号： F16C32/06 , B21B13/14 , B21B29/00 , B21B31/07 , B21B31/20 , B21B37/38 , B21B37/00
摘要： The roll stand for rolling a strip (1) is provided with at least one pair of working rolls (2, 3) and thrust blocks (12-15) supporting working rolls horizontally over a region which is not smaller than the maximum strip width. Displacement devices (20, 21) horizontally displace the working rolls, and are attached to the thrust blocks (12-15). The rolling method includes the following steps: (a) measurement of the horizontal forces on the thrust blocks by means of force sensors (24, 25); (b) control of the thrust generated by the units (22, 23) in accordance with the forces measured.

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