发明授权
- 专利标题: Method of forming a rivet of titanium-columbium alloy
- 专利标题(中): 形成钛 - 铌合金铆钉的方法
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申请号: US590693申请日: 1975-06-26
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公开(公告)号: US3975786A公开(公告)日: 1976-08-24
- 发明人: Roland Howard Gapp , Rahmatollah Fakhri Toosky , Ira Bill Lee York
- 申请人: Roland Howard Gapp , Rahmatollah Fakhri Toosky , Ira Bill Lee York
- 专利权人: Textron, Inc.
- 当前专利权人: Textron, Inc.
- 主分类号: B21K1/58
- IPC分类号: B21K1/58 ; F16B19/06
摘要:
A high strength buckable rivet made of an alloy consisting of titanium and columbium, the optimum proportion being about 55% titanium and about 45% columbium. The method of making this rivet includes the steps of cold forming a cylindrical blank so as to form a head and shank of the rivet and cold working the head and a portion of a shank of the rivet so as to leave a ductile tail portion capable to form a buck tail, the optimum length of the ductile portion being about 0.8 times the diameter of the rivet shank.
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