发明名称 |
Rolling control method, rolling control apparatus and control program for a mandrel mill, and a method of manufacturing a seamless tube or pipe |
摘要 |
In a rolling control method for a mandrel mill M having a plurality of grooved rolls including a finishing stand #i by moving the rolling positions of first grooved rolls installed in the finishing stand outwards when rolling a pierced blank S in the finishing stand #i, when rolling the pierced blank in the closest upstream stand #(i-2) to the finishing stand #i having the same roll-reducing directions, the rolling positions of second grooved rolls installed in the upstream stand #(i-2) are also moved outwards, thereby making it possible to accurately roll a pierced roll for the entire length of a portion such as the end portions to a desired wall thickness when manufacturing a seamless tube using the mandrel mill.
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申请公布号 |
EP2366468(A1) |
申请公布日期 |
2011.09.21 |
申请号 |
EP20110165552 |
申请日期 |
2005.06.30 |
申请人 |
SUMITOMO METAL INDUSTRIES, LTD. |
发明人 |
NAKAIKE, KOUJI;SASAKI, KENICHI;YAMANE, AKIHITO |
分类号 |
B21B17/02;B21B17/04;B21B37/78 |
主分类号 |
B21B17/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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