发明公开
- 专利标题： A METHOD OF ROLLING RAILS, APPARATUS FOR ROLLING RAILS AND RAIL PRODUCED ACCORDING TO SAID METHOD
- 专利标题（中）： 法轧制钢轨和设备轧制钢轨
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申请号： EP10787018.0申请日： 2010-11-24
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公开(公告)号： EP2504112A2公开(公告)日： 2012-10-03
- 发明人: SHIPTON, Damian, Gerard , NORFOLK, Darren, Michael
- 申请人： Tata Steel UK Limited
- 申请人地址： 30 Millbank London SW1P 4WY GB
- 专利权人： Tata Steel UK Limited
- 当前专利权人： Tata Steel UK Limited
- 当前专利权人地址： 30 Millbank London SW1P 4WY GB
- 代理机构： Bodin, Andre
- 优先权： EP09014727 20091126
- 国际公布： WO2011063935 20110603
- 主分类号： B21B1/085
- IPC分类号： B21B1/085
摘要：
This invention relates to a method of rolling steel rails comprising : a method of rolling steel rails comprising: providing a rail blank (5), the blank comprising a foot portion (2), a head portion (3) and a web portion (4) connecting the foot portion to the head portion; finishing the rail blank to form a steel rail (6) in a multi-stand continuous tandem finishing mill comprising at least one horizontal stand (H) and at least five four-roll universal stands (U), wherein each universal stand (U
x ) only contains flat vertical rolls for forming the lower foot portion (2a) and the head portion (3a) of the rail, and wherein each universal stand (U
x ) contains two shaped horizontal rolls for forming the sides (6a, 6b) of the rail and particularly the web portion (4a, 4b) of the rail, wherein the rail blank is passed only once through said finishing mill, and wherein in at least one combination of two subsequent stands U
l and U
l+1 ⋅ the rail is worked on the foot and not on the head using the flat vertical rolls in U
l and wherein the rail is worked on the head and not on the foot using the flat vertical rolls in U
l+1 ; or ⋅ the rail is worked on the head and not on the foot using the flat vertical rolls in U
l and wherein the rail is worked on the foot and not on the head using the flat vertical rolls in U
l+1 . The invention also relates to an apparatus for carrying out said method, and to a product produced therewith.
x ) only contains flat vertical rolls for forming the lower foot portion (2a) and the head portion (3a) of the rail, and wherein each universal stand (U
x ) contains two shaped horizontal rolls for forming the sides (6a, 6b) of the rail and particularly the web portion (4a, 4b) of the rail, wherein the rail blank is passed only once through said finishing mill, and wherein in at least one combination of two subsequent stands U
l and U
l+1 ⋅ the rail is worked on the foot and not on the head using the flat vertical rolls in U
l and wherein the rail is worked on the head and not on the foot using the flat vertical rolls in U
l+1 ; or ⋅ the rail is worked on the head and not on the foot using the flat vertical rolls in U
l and wherein the rail is worked on the foot and not on the head using the flat vertical rolls in U
l+1 . The invention also relates to an apparatus for carrying out said method, and to a product produced therewith.
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