| 发明名称 |
METHODS FOR MANUFACTURING INVESTMENT CASTING SHELLS |
| 摘要 |
An at least two step heating process is used to strengthen the shell of an investment casting mold including a refractory metal core. The first stage (46) may occur under otherwise oxidizing conditions at a low enough temperature to avoid substantial core oxidation. The second stage (56) may occur under essentially non-oxidizing conditions at a higher temperature. <IMAGE> |
| 申请公布号 |
KR20060045420(A) |
申请公布日期 |
2006.05.17 |
| 申请号 |
KR20050027511 |
申请日期 |
2005.04.01 |
| 申请人 |
UNITED TECHNOLOGIES CORP. |
发明人 |
SNYDER JACOB A.;BEALS JAMES T.;PERSKY JOSHUA E.;VERNER CARL R.;KENNARD LEA D.;MANDICH DAWN D.;MURRAY STEPHEN D. |
| 分类号 |
B22C7/02;B22C9/04;B22C9/10;B22C9/12;B22C13/08 |
主分类号 |
B22C7/02 |
| 代理机构 |
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