| 发明名称 |
Stretch-forming of long tubes |
| 摘要 |
Tubular blanks are stretch-formed by moving a mandrel into such a blank while holding a die which receives the blank and until mandrel and die are radially aligned. Subsequently, mandrel and die are moved axially to complete the drawing.
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| 申请公布号 |
US3950978(A) |
申请公布日期 |
1976.04.20 |
| 申请号 |
US19750539231 |
申请日期 |
1975.01.07 |
| 申请人 |
MANNESMANNROHREN-WERKE AG |
发明人 |
WASSEN, JOHANN |
| 分类号 |
B21C1/22;B21C1/24;B21C37/30;B21D3/12;B21K21/04;(IPC1-7):B21C1/24 |
主分类号 |
B21C1/22 |
| 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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