发明名称 |
Process and materials for making refractory cores |
摘要 |
Ceramic cores suitable for use in investment casting operations are molded from a mixture containing comminuted refractory which includes partially dehydrated gypsum and a sublimable binder. When the sublimable binder has been sublimated from the molded core, it is soaked in water in order to hydrate the gypsum and cause it to set.
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申请公布号 |
US4284121(A) |
申请公布日期 |
1981.08.18 |
申请号 |
US19800125468 |
申请日期 |
1980.02.28 |
申请人 |
PRECISION METALSMITHS, INC. |
发明人 |
HORTON, ROBERT A. |
分类号 |
B22C1/02;B22C1/08;B22C1/10;B22C1/16;B22C1/20;B22C9/10;(IPC1-7):B22C1/02 |
主分类号 |
B22C1/02 |
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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