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公开(公告)号：US5494539A
公开(公告)日：1996-02-27
申请号：US297051
申请日：1994-08-29
申请人： Hiroshi Tsujimura , Yasumasa Tamai , Masayuki Kurihara , Seiichi Toyoda , Yutaka Watanabe , Koichi Kurosawa
发明人： Hiroshi Tsujimura , Yasumasa Tamai , Masayuki Kurihara , Seiichi Toyoda , Yutaka Watanabe , Koichi Kurosawa
CPC分类号： B23P6/04 , C21D1/00 , C21D2221/00
摘要： By applying spot welding along a crack which has occurred in an austenitic stainless steel structure without use of welding material so that spot welds are connected, melting and solidifying of the crack can be achieved, thereby to provide a metal structure which is rich with delta ferrite of the austenitic stainless steel structure or prevent propagation of the crack by enclosing it into the interior of the austenitic stainless steel structure.
摘要翻译： 通过在不使用焊接材料的情况下沿着奥氏体不锈钢结构中发生的裂纹进行点焊，使得点焊连接，可以实现裂纹的熔融固化，从而提供富含δ铁素体的金属结构体 的奥氏体不锈钢结构，或通过将其包围在奥氏体不锈钢结构的内部来防止裂纹扩展。
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公开(公告)号：US5305361A
公开(公告)日：1994-04-19
申请号：US8718
申请日：1993-01-25
申请人： Kunio Enomoto , Masahiro Otaka , Koichi Kurosawa , Hideyo Saito , Hiroshi Tsujimura , Yasumasa Tamai , Keiichi Uraki , Masahito Mochizuki
发明人： Kunio Enomoto , Masahiro Otaka , Koichi Kurosawa , Hideyo Saito , Hiroshi Tsujimura , Yasumasa Tamai , Keiichi Uraki , Masahito Mochizuki
CPC分类号： G21C19/00 , B05B15/061 , B05B17/0615 , C21D7/06 , G21Y2002/201 , G21Y2004/30 , G21Y2004/40
摘要： A water jet peening method in which a pressurized water jet flow containing cavities is jetted through a nozzle having a velocity increasing orifice portion and a horn-like jetting hole formed continuously with the velocity increasing orifice portion to impinge against a surface of a metallic material immersed in water and to cause the cavities to collapse at the surface of the metallic member, and a tensile plastic deformation is caused in a surface layer of the metallic material by a local high pressure generated by the impingement and the collapse so that a residual tensile stress in the surface of the metallic member is reduced. In this method, the nozzle is vibrated so that vibration-induced cavities are formed in the vicinity of a nozzle wall surface, and the vibration-induced cavities are caused to impinge against the surface of the metallic member by the pressurized water jet flow containing cavities. It is thereby possible to promote the generation of cavities even in a case where pure water existing in a nuclear reactor and scant of nuclei from which cavities will be generated is used in peening of an internal structual member of the reactor.
摘要翻译： 一种喷水喷丸法，其中通过具有速度增加孔部分的喷嘴喷射含有空腔的加压水射流，并且与增速孔部分连续形成的喇叭形喷射孔冲击浸入金属材料的表面 并导致空腔在金属构件的表面处塌陷，并且通过由冲击和塌陷产生的局部高压在金属材料的表面层中引起拉伸塑性变形，使得残余拉伸应力 在金属构件的表面减少。 在该方法中，喷嘴被振动，使得在喷嘴壁表面附近形成振动引起的空腔，并且使振动引起的空腔通过包含加压水射流的空腔与金属构件的表面碰撞 。 因此，即使在核反应堆中存在的纯水和将产生空腔的细小核的情况下，也可以促进空腔的产生，从而在反应器的内部结构构件的喷丸处理中使用。
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公开(公告)号：US5022936A
公开(公告)日：1991-06-11
申请号：US445535
申请日：1989-12-04
CPC分类号： C21D1/00 , C21D9/50 , B23K2203/05 , Y10S148/903
摘要： A method for improving a property of a weld of an austenitic stainless steel which is a part of a structure being brought into contact with a corrosive fluid at a region having been affected by welding heat on both of opposed surfaces, comprising the steps of: cooling said thermally affected region on one of said opposed surfaces; and simultaneously with said cooling step, applying a melting treatment to the other surface, thereby changing the melting treatment portion into a micro structure that contains delta (.delta.) ferrite and is superior in corrosion resistance property. The latter surface is improved in high tensile stress generated by the welding work. Namely, its stress is reduced. The melting heat for said melting treatment is obtained by application of high density energy.
摘要翻译： 一种用于改善奥氏体不锈钢的焊接性能的方法，所述奥氏体不锈钢是在相对的表面上受到焊接热影响的区域与腐蚀性流体接触的结构的一部分，包括以下步骤：冷却 所述热影响区域位于所述相对表面之一上; 并且与所述冷却步骤同时对另一个表面进行熔融处理，从而将熔融处理部分改变为含有δ（δ）铁素体的微结构，并且具有优异的耐腐蚀性。 后者表面改善了焊接工作产生的高拉伸应力。 即，其应力降低。 通过施加高密度能量获得用于所述熔融处理的熔化热。
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