发明名称 |
REIKYAKUKUDOTSUKIPISUTONNOSEIZOHOHO |
摘要 |
A method of manufacturing a piston for internal combustion engines which utilize a core molding or casting system for forming a hollow chamber for the passage of cooling oil therethrough. The manufacturing method includes the steps of preparing a core so as to have at least a first and second foot portion extending therefrom; inserting a bar member made of magnetic materials within each of the first and second foot portions; positioning at least one permanent magnet on a core box; and fixing the core to the core box via the bar members due to the magnetic flux of the permanent magnet. |
申请公布号 |
JPH0228417(B2) |
申请公布日期 |
1990.06.25 |
申请号 |
JP19830122553 |
申请日期 |
1983.07.05 |
申请人 |
AISIN SEIKI |
发明人 |
HARA SOICHI;MATSUZAKI YOSHINORI |
分类号 |
F02F3/18;B22C9/10;B22C9/24;B22C21/14;F02F3/00;F02F3/22;F02F7/00 |
主分类号 |
F02F3/18 |
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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