发明名称 |
Heating of metal alloy sheet by thermal conduction |
摘要 |
A method is disclosed for heating a cold worked sheet of superplastically formable metal composition to recrystallize its microstructure to a formable condition and/or to heat the sheet to a temperature for an immediate forming operation. The sheet is placed between two electrical resistance heated platens maintained at a suitable temperature for recrystallizing and/or heating the metal sheet through its side surfaces. In a preferred embodiment a critical gap is maintained between the platens and the sheet to permit rapid conductive heating of the expanding sheet without marring its surfaces.
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申请公布号 |
EP1566462(A1) |
申请公布日期 |
2005.08.24 |
申请号 |
EP20040003803 |
申请日期 |
2004.02.19 |
申请人 |
GENERAL MOTORS CORPORATION |
发明人 |
CARSLEY, JOHN E.;HAMMAR, RICHARD HARRY;BRADLEY, JOHN ROBERT |
分类号 |
B21D26/02;C22F1/04;C22F1/047;(IPC1-7):C22F1/047 |
主分类号 |
B21D26/02 |
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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