发明名称 |
PRODUCING A COMPOSITE SINTERED ARTICLE SUCH AS A COMPOUND VALVE SEAT |
摘要 |
A valve seat or similar article produced by sintering a compound body is improved in economy and producibility by employing a method wherein the amount of a second powder for forming the compound body is controlled so as to be minimized. A first powder is initially charged into a compression space and lightly compressed to form a preparatory compact of a desired shape. Subsequently, the second powder is charged in over the preparatory compact to a degree controlled by the displacement of the compact, and the preparatory compact and the second powder are forcefully compressively integrally molded to form a final compact which is then sintered to form the finished product. |
申请公布号 |
GB2125434(B) |
申请公布日期 |
1986.02.19 |
申请号 |
GB19830015645 |
申请日期 |
1983.06.07 |
申请人 |
* NIPPON PISTON RING CO LTD |
发明人 |
SHIGERU * URANO |
分类号 |
F01L3/02;B22F7/06;B30B11/00;B30B11/06;F01L3/22;(IPC1-7):B22F3/00 |
主分类号 |
F01L3/02 |
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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