发明名称 |
Surface smoothing process for cold drawn tube - uses progressive local fusing combined with mechanical smoothing to produce hair crack free smooth surfaces |
摘要 |
<p>The arrangement is intended for producing a hair crack-free and smooth metal surface, particularly of a cold-drawn tube (1). The surface is fused to a depth to which any flaws extend and the softened layer (7) thus produced is mechanically smoothed (6). The operation may be carried out with fixed or rotating internal and/or external tools. Fusing, shaping and cooling may be carried out in a protective gas atmosphere and in a continuous process. Fusing may be by laser or electron beam, electric induction, electric arc (2) or a flame.</p> |
申请公布号 |
DE3048314(A1) |
申请公布日期 |
1982.07.22 |
申请号 |
DE19803048314 |
申请日期 |
1980.12.18 |
申请人 |
MANNESMANN AG |
发明人 |
JANSSEN,MANFRED,DR.;SCHMIDT,VOLKER,DR.;AUSTERMANN,KARL;BACHMANN,THEODOR |
分类号 |
B21C37/30;B23P9/00;(IPC1-7):23P9/00;21C37/00;21C3/16 |
主分类号 |
B21C37/30 |
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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