发明名称 |
Method for consolidating precision shapes |
摘要 |
A method for consolidating powder metal preforms and for thereby producing high performance metal shapes from powder particles. The powder particles are consolidated into a shaped porous preform, and a coating is then applied to the resulting preform. The coating is initially porous whereby the coated preform can be degasified by subjecting the preform to a vacuum, particularly at elevated temperatures. The coated preform is then heated under vacuum to a temperature such that the coating is densified to the extent that it becomes non-porous. The coated preform is then subjected to a hot isostatic pressing operation whereby formation of a high integrity, fully dense metal shape results.
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申请公布号 |
US4104782(A) |
申请公布日期 |
1978.08.08 |
申请号 |
US19760705087 |
申请日期 |
1976.07.14 |
申请人 |
HOWMET TURBINE COMPONENTS CORPORATION |
发明人 |
VEECK, STEWART J.;FREEMAN, WILLIAM R.;DARDI, LOUIS E. |
分类号 |
B22F3/12;(IPC1-7):B22D11/12 |
主分类号 |
B22F3/12 |
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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