| 发明名称 |
Poppet valve and method of manufacturing it |
| 摘要 |
A poppet valve in an internal combustion engine comprises a valve head and a valve stem. On a valve face of the valve head, a hardened layer of dendrites in which crystals are directed from the inside to the surface is formed, thereby increasing wear resistance of the valve face without cladding.
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| 申请公布号 |
US5799683(A) |
申请公布日期 |
1998.09.01 |
| 申请号 |
US19960618287 |
申请日期 |
1996.03.18 |
| 申请人 |
FUJI OOZX INC. |
发明人 |
HAMADA, AKIHIRO;UMINO, SHINICHI;TAKANO, YUJI |
| 分类号 |
C21D1/09;C21D9/00;F01L3/04;(IPC1-7):F01L3/10 |
主分类号 |
C21D1/09 |
| 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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