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1. 发明专利

JP2013173155A Spot welding method of steel plate having different plate thickness 有权
标题翻译：具有不同板厚度的钢板的点焊焊接方法
公开(公告)号：JP2013173155A
公开(公告)日：2013-09-05
申请号：JP2012038093
申请日：2012-02-24
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社 , Nippon Tungsten Co Ltd , 日本タングステン株式会社
发明人： SAKURADA YASUHIRO , IENARI TORU , ASADA HIROSHI , MUKAE SHINGO
IPC分类号： B23K11/30 , B23K11/11 , B23K11/16
摘要： PROBLEM TO BE SOLVED: To obtain a joined body having high joining strength by performing so as to form a nugget in the neighborhood of boundary face of a steel plates to be welded even when using an electrode which is the same in the tip diameter and the tip shape when performing the spot welding of a plate union having a plate thickness ratio, in which a plurality of steel plates having different plate thickness are superposed.SOLUTION: Spot welding is performed by using electrodes, which have the same shape, wherein an electrode consists of a material which is lower than the side of a thick plate in thermal conductivity on the side of a thin plate, for example, a copper electrode in which a core material consisting of tungsten is embedded in the tip; and the electrode which consists of a material which is higher than the side of the thin plate in the thermal conductivity on the side of the thick plate, for example, an electrode made of 1% Cr-Cu alloy.
摘要翻译：要解决的问题：为了获得具有高接合强度的接合体，即使在使用尖端直径相同的电极时，通过进行即使在待焊接的钢板的边界面附近形成熔核，进行具有板厚比的板焊接件的点焊时的尖端形状，其中多个厚度不同的钢板重叠。解决方案：通过使用具有相同形状的电极进行点焊，其中电极由在薄板侧的导热性较差的厚板侧的材料构成，例如由钨构成的芯材嵌入顶端的铜电极，以及由厚板侧的热传导率高于薄板侧的材料构成的电极，例如由1％Cr-Cu合金构成的电极。

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