发明名称 |
Die |
摘要 |
A die is described, comprising a die body and a steel case, characterized in that: a die body made of a silicon nitride ceramic or a silicon carbide ceramic is shrink fitted or force fitted into a steel case wherein an optional wide recess may be cut in the inner surface of the bottom of said steel case along a corner where the bottom and the inner wall of said steel case meet.
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申请公布号 |
US4468947(A) |
申请公布日期 |
1984.09.04 |
申请号 |
US19810335034 |
申请日期 |
1981.12.28 |
申请人 |
NGK SPARK PLUG CO., LTD. |
发明人 |
TAKEDA, TOORU;HAYAKAWA, MASAKATSU;INOUE, YASUO |
分类号 |
B21C3/02;B21C3/18;B21C25/02;B29B7/00;B29C47/00;B29C47/12;(IPC1-7):B21C3/02 |
主分类号 |
B21C3/02 |
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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