发明名称 |
Advanced forming techniques for superplastic forming |
摘要 |
<p>This application describes a method for superplastic forming (SPF) of metallic parts in which a cutout is formed in the blank from which the parts will be formed, and a secondary sheet is located between the blank and the pressurized gas. The cutout area of the blank becomes stretched so that there is minimal thinning in the area near the periphery of the cutout(s) in the blank, the secondary sheet is required to carry the gas pressure and to form the parts. <IMAGE> <IMAGE> <IMAGE></p> |
申请公布号 |
EP0849013(A1) |
申请公布日期 |
1998.06.24 |
申请号 |
EP19970203563 |
申请日期 |
1997.11.14 |
申请人 |
THE BOEING COMPANY |
发明人 |
BEAL, JOSEPH D.;TAKAYAMA, CHRIS J. |
分类号 |
B21D26/055;(IPC1-7):B21D26/02 |
主分类号 |
B21D26/055 |
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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