发明名称 Method and apparatus for manufacturing tubes
摘要 A method for manufacturing a tube made of a non-ferrous material, particularly a tube made of mainly copper, in which method, in the first working step the tube billet is worked so that mainly owing to the deformation resistance, the temperature of the tube billet under operation rises up to the recrystallization range, at least on the spot that is being worked. Essentially immediately after the first working step, the tube billet is subjected to at least a second working step and the tube billet is maintained, at least during the first and second working step in non-oxidizing conditions. the invention also relates to an apparatus.
申请公布号 US6892559(B2) 申请公布日期 2005.05.17
申请号 US20030450424 申请日期 2003.06.11
申请人 OUTOKUMPU OYJ 发明人 LEIPONEN MATTI
分类号 B21B1/46;B21B3/00;B21B9/00;B21B13/00;B21B19/06;B21B19/08;B21B19/10;B21B19/16;B21B45/00;C22F1/02;C22F1/08;(IPC1-7):B21B9/00 主分类号 B21B1/46
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