发明授权
- 专利标题: Method of making a structure immune against stress corrosion cracking
- 专利标题(中): 使结构免受应力腐蚀开裂的方法
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申请号: US933555申请日: 1978-08-14
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公开(公告)号: US4234119A公开(公告)日: 1980-11-18
- 发明人: Isao Masaoka , Katsuyuki Imai
- 申请人: Isao Masaoka , Katsuyuki Imai
- 申请人地址: JPX
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JPX
- 优先权: JPX52-96033 19770812
- 主分类号: B23K33/00
- IPC分类号: B23K33/00 ; B23K9/02 ; B23K9/04 ; B23K31/02
摘要:
A groove is provided on the side of a metallic structure opposite to the side thereof which is exposed to a corrosive atmosphere, and the groove is subjected to build-up welding while cooling with a liquid coolant, whereby any stress corrosion cracking which otherwise occurs on the side of the structure to be exposed to the corrosive atmosphere can be prevented. Especially, this method of manufacture is appropriate for the repair welding of a butt-welded pipe of austenite type stainless steel, and it is effective to perfectly prevent the stress corrosion cracking of the pipe prone to be caused by reactor water during use in a nuclear reactor.
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