| 发明名称 |
Method of heat treating valve inserts |
| 摘要 |
An induction hardened valve seat insert is provided with a ridged outer surface which establishes a mechanically locked engagement with the wall of the insert bore during the induction heating cycle.
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| 申请公布号 |
US4643781(A) |
申请公布日期 |
1987.02.17 |
| 申请号 |
US19850732739 |
申请日期 |
1985.05.10 |
| 申请人 |
TOCCO, INC. |
发明人 |
VICKERS, ROBERT V.;SACHTJEN, PETER D. |
| 分类号 |
B21K25/00;C21D9/40;F01L3/22;(IPC1-7):C21D1/42 |
主分类号 |
B21K25/00 |
| 代理机构 |
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代理人 |
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