发明名称 |
Complaint investment casting mold and method |
摘要 |
A high melting point and/or low ductility metal or alloy is investment cast in a refractory mold including a facecoat layer and a plurality of back-up layers wherein at least one back-up layer is a relatively weak, sacrificial layer. This latter layer is crushed as necessary as the casting cools below its ductile-to-brittle transition temperature to avoid hot tearing or cracking of the solidified metal or alloy during cooling in the mold.
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申请公布号 |
US5297615(A) |
申请公布日期 |
1994.03.29 |
申请号 |
US19920916015 |
申请日期 |
1992.07.17 |
申请人 |
HOWMET CORPORATION |
发明人 |
AIMONE, PAUL R.;KILINSKI, BART M.;RAMTHUN, KEITH D. |
分类号 |
B22C1/02;B22C9/04;(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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