发明名称 |
Self-tapping support for shell molds |
摘要 |
A method of casting metal in a gas permeable shell mold in which a vacuum is applied to an external upper mold surface by engaging the mold in the downwardly facing opening of a generally cylindrical vacuum chamber, defined by a chamber wall with a threaded region sized and shaped to snuggly engage a side mold surface. Engagement is effected by forcing the mold into the chamber opening while causing relative rotation of the mold and chamber.
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申请公布号 |
US4508157(A) |
申请公布日期 |
1985.04.02 |
申请号 |
US19830485196 |
申请日期 |
1983.04.15 |
申请人 |
HITCHINER MANUFACTURING CO., INC. |
发明人 |
BELLIVEAU, DENNIS A.;THOMAS, EUGENE W. |
分类号 |
B22C13/08;B22D18/06;(IPC1-7):B22D18/04 |
主分类号 |
B22C13/08 |
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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