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公开(公告)号：EP1289685A1
公开(公告)日：2003-03-12
申请号：EP01933465.5
申请日：2001-05-25
申请人： Castrip, LLC
CPC分类号： B21B37/28 , B21B1/26 , B21B1/463 , B21B37/48 , B21B37/56 , B21B39/006 , B21B39/08 , B21B45/008 , B21B2001/225 , B21B2265/04 , B21B2265/08 , Y02P70/127 , Y10T29/49991
摘要： Thin steel strip (11) is passed through a pinch roll stand (12) comprising pinch rolls (13) to a rolling mill (16) comprising a pair of work rolls (17) and upper and lower backing rolls (18). Strip (11) passes through the bite between work rolls (17) and strip squeezing forces are applied between the work rolls to reduce the thickness of the strip. Pinch rolls (13) apply tension to the strip passing to the work rolls (17). In order to minimize generation of crimping defects in the strip, the tension applied by the nip rolls (13) is high enough to ensure no part of the strip entering the work rolls is in longitudinal compression such as to exceed the buckling stress of the strip. The applied tension is sufficiently low as to produce no more than 1% strip elongation through creep. The strip may be hot rolled by work rolls (17) at a temperature in the range 700°C-1200°C.
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公开(公告)号：EP1265717A1
公开(公告)日：2002-12-18
申请号：EP00981075.5
申请日：2000-11-30
申请人： Castrip, LLC
CPC分类号： B21B37/28 , B21B1/463 , B21B39/006 , B21B39/08 , B21B45/008 , B21B2001/225 , B21B2015/0071 , Y02P70/127
摘要： Thin steel strip (11) is passed through a pinch roll stand (12) comprising pinch rolls (13) to a hot rolling mill (16) comprising work rolls (17) and backing rolls (18). In advance of rolling mill (16) the strip passes over support rolls (15). An anti-crimping guide roll (21) located immediately in advance of the rolling mill (16) is mounted on a pair of rocker structures (22) so as to be raisable from a lower inoperative position to lift the strip out of a straight line path so as to pass around the anti-crimping roll and to be wrapped about the upper work roll (17) in advance of the nip (26) through an angle of wrap of at least 10°. Due to the wrapping of the strip around the upper work roll, (17), that roll supports the strip and resists buckling of the strip and the generation of crimping defects.
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公开(公告)号：EP1289685B1
公开(公告)日：2008-02-20
申请号：EP01933465.5
申请日：2001-05-25
申请人： Castrip, LLC
CPC分类号： B21B37/28 , B21B1/26 , B21B1/463 , B21B37/48 , B21B37/56 , B21B39/006 , B21B39/08 , B21B45/008 , B21B2001/225 , B21B2265/04 , B21B2265/08 , Y02P70/127 , Y10T29/49991
摘要： Thin steel strip (11) is passed through a pinch roll stand (12) comprising pinch rolls (13) to a rolling mill (16) comprising a pair of work rolls (17) and upper and lower backing rolls (18). Strip (11) passes through the bite between work rolls (17) and strip squeezing forces are applied between the work rolls to reduce the thickness of the strip. Pinch rolls (13) apply tension to the strip passing to the work rolls (17). In order to minimize generation of crimping defects in the strip, the tension applied by the nip rolls (13) is high enough to ensure no part of the strip entering the work rolls is in longitudinal compression such as to exceed the buckling stress of the strip. The applied tension is sufficiently low as to produce no more than 1% strip elongation through creep. The strip may be hot rolled by work rolls (17) at a temperature in the range 700°C-1200°C.
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公开(公告)号：EP1265717B1
公开(公告)日：2005-01-12
申请号：EP00981075.5
申请日：2000-11-30
申请人： Castrip, LLC
CPC分类号： B21B37/28 , B21B1/463 , B21B39/006 , B21B39/08 , B21B45/008 , B21B2001/225 , B21B2015/0071 , Y02P70/127
摘要： Thin steel strip (11) is passed through a pinch roll stand (12) comprising pinch rolls (13) to a hot rolling mill (16) comprising work rolls (17) and backing rolls (18). In advance of rolling mill (16) the strip passes over support rolls (15). An anti-crimping guide roll (21) located immediately in advance of the rolling mill (16) is mounted on a pair of rocker structures (22) so as to be raisable from a lower inoperative position to lift the strip out of a straight line path so as to pass around the anti-crimping roll and to be wrapped about the upper work roll (17) in advance of the nip (26) through an angle of wrap of at least 10 DEG . Due to the wrapping of the strip around the upper work roll, (17), that roll supports the strip and resists buckling of the strip and the generation of crimping defects.
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