发明名称 |
ALBERO A CAMME E METODO PER PRODURLO. |
摘要 |
A camshaft having a tubular steel shaft and a sintered cam piece joined to the shaft. The sintered cam piece has iron tetroxide film at its surface. The camshaft is produced by assembling a powder compact to the steel shaft to provide a camshaft assembly, sintering the assembly to provide an integral assembly, correcting bending to the assembly, annealing the assembly, grinding the cam piece and effecting vaporization treatment to the assembly at a temperature lower than the annealing temperature. |
申请公布号 |
IT9047546(D0) |
申请公布日期 |
1990.01.19 |
申请号 |
IT19900047546 |
申请日期 |
1990.01.19 |
申请人 |
NIPPON PISTON RING CO LTD |
发明人 |
SUZUKI YASUO;TAKEGUCHI SHUNSUKE |
分类号 |
B22F7/06;C22C33/02;F01L1/047;F16H53/02;(IPC1-7):F02B |
主分类号 |
B22F7/06 |
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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