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JP2012055904A Liquid phase diffusion welding method and welded product 有权
标题翻译：液相扩散焊接方法和焊接产品
公开(公告)号：JP2012055904A
公开(公告)日：2012-03-22
申请号：JP2010199097
申请日：2010-09-06
申请人： Nippon Steel Corp , Toyota Motor Corp , トヨタ自動車株式会社 , 新日本製鐵株式会社
发明人： YAMADA TAKAYUKI , KYODA HIROHARU , TAKADA HIROTADA , HASEGAWA HIROSHI , YOSHIDA TAKU , HASHIMURA MASAYUKI
IPC分类号： B23K20/00
摘要： PROBLEM TO BE SOLVED: To provide a liquid phase diffusion welding method to weld members mutually to be welded having cylindrical portions at their ends while suppressing generation and inclusion of oxides at the welding portions.SOLUTION: Steel pipes 10A, 10B are welded mutually at opening end faces by disposing a low-melting point welding material 11 with a lower melting point than that of steel between the respective opening end faces of the steel pipes 10A, 10B and then welding the steel pipes 10A, 10B at their opening end faces by pressing the steel pipes 10A, 10B while heating the steel pipes 10A, 10B to a welding temperature which is the melting point of the low-melting point welding material 11 or higher. The oxides generated at the welding portions are pushed out around the welding portions. The material of the low-melting point welding material 11 is diffused in the steel pipes 10A, 10B by heating the steel pipes 10A, 10B to a diffusing temperature higher than the welding temperature while maintaining the pressing state. Then, the steel pipes 10A, 10B are pressed at a pressing force lower than the pressing force in a welding/extracting process while maintaining the heating state and the material of the low-melting point welding material 11 is further diffused in the members to be welded.
摘要翻译：要解决的问题：为了提供一种液相扩散焊接方法，用于在焊接部分抑制氧化物的生成和包含的同时，在其端部焊接具有圆筒部的待焊接部件。解决方案：通过在钢管10A，10B的各个开口端面之间设置熔点低于钢的低熔点焊接材料11，在开口端面处相互焊接钢管10A，10B和然后在将钢管10A，10B加热到低熔点焊接材料11的熔点的焊接温度以上的同时，将钢管10A，10B在其开口端面焊接，同时对钢管10A，10B进行加压。在焊接部分产生的氧化物在焊接部分周围被推出。低熔点焊接材料11的材料通过在维持加压状态的同时将钢管10A，10B加热到高于焊接温度的扩散温度而扩散到钢管10A，10B中。然后，钢管10A，10B在保持加热状态的同时以比焊接/提取过程中的按压力更低的压力按压，并且低熔点焊接材料11的材料进一步扩散到构件中焊接。版权所有（C）2012，JPO＆INPIT

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