发明名称 |
DIRECT OR INDIRECT METAL PIPE EXTRUSION PROCESS, MANDREL FOR EXTRUDING METAL PIPES, METAL PIPE EXTRUDER AND EXTRUDED METAL PIPE |
摘要 |
<p>If a mandrel for extruding metal pipes, having two axially offset pressing surfaces with different radial embossing and having a transition region between these two pressing surfaces has a support surface in the transition region then the negative effect of narrowing, which arises owing to the mandrel shifting from a first pressing position, in which the first of the two pressing surfaces interacts with a die, to a second pressing position, in which the second pressing surface interacts with the die, can be minimized.</p> |
申请公布号 |
EP2877298(A1) |
申请公布日期 |
2015.06.03 |
申请号 |
EP20130762732 |
申请日期 |
2013.07.24 |
申请人 |
SMS MEER GMBH |
发明人 |
MUSCHALIK, UWE;VAN PUTTEN, KOOS;ROTT, ANNA;MAGENHEIMER, JENS |
分类号 |
B21C23/08;B21C23/20;B21C23/21;B21C25/08 |
主分类号 |
B21C23/08 |
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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