发明名称 |
INVESTMENT CASTING SHELLS AND COMPOSITIONS INCLUDING RICE HULL ASH |
摘要 |
Incorporation of rice hull ash into investment casting shell molds improves the permeability, shell build thickness, and/or shell build uniformity of the molds. A method to make the molds entails mixing refractory filler, rice hull ash, and preferably a fiber to form a dry blend; mixing the dry blend with a binder sol to form a refractory slurry, and employing the refractory slurry to produce an investment casting shell mold. |
申请公布号 |
EP1888271(A1) |
申请公布日期 |
2008.02.20 |
申请号 |
EP20050851931 |
申请日期 |
2005.11.18 |
申请人 |
BUNTROCK INDUSTRIES, INC. |
发明人 |
VANDERMEER, JOHN;BUNTROCK, KERMIT A.;BRANSCOMB, THOMAS M.;DAVIS, ARLEN G. |
分类号 |
B22C1/02;B22C9/04 |
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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