发明名称 |
Process for manufacturing a cylindrical hollow body and hollow body made thereby |
摘要 |
Process for manufacturing cylindrical hollow bodies with a circular cross-section using solid rough material of corrosion-resistant, martensitic chromium steels. A remelting block is produced and a tube blank is made therefrom, the tube blank being formed into a tube at hot forming temperature by extrusion at a deformation ratio of at least 6. Hollow bodies are cut from the resultant tube.
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申请公布号 |
US7181847(B2) |
申请公布日期 |
2007.02.27 |
申请号 |
US20010983497 |
申请日期 |
2001.10.24 |
申请人 |
BOEHLER EDELSTAHL GMBH & CO. KG |
发明人 |
SCHNEIDER REINHOLD;LICHTENEGGER GERHARD;SCHIRNINGER GUENTER |
分类号 |
B21D53/10;B21C37/06;C21D8/10 |
主分类号 |
B21D53/10 |
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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