发明名称 |
Press working method including step of strengthening local portion of blank |
摘要 |
A method of effecting press working on a blank, in which a local portion of the blank is strengthened prior to the press working, so as to achieve increased mechanical strength, due to structural transformation of the material of the blank, or by an embossing operation. The local portion is selected so that the blank exhibits improved formability and suffers from reduced fractures during the press working. <MATH> |
申请公布号 |
EP0700735(A3) |
申请公布日期 |
1996.05.15 |
申请号 |
EP19950113329 |
申请日期 |
1995.08.24 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
SATO, AKIHITO;NAKAMURA, SHINICHIRO;HOSOE, TAKASHI |
分类号 |
B21D5/01;B21D22/20;B21J1/02;C21D1/09;C21D1/18;C21D9/00 |
主分类号 |
B21D5/01 |
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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