超音波を利用した点熔接の研究
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概要
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This paper contains a dynamic study and a static one. The principle of the dynamic study is that the damping of ultrasonic wave depends upon the conditon of the path. That is, if there is a high temperature part on the path, and if there is an air gap on it, the ultrasonic wave would damp to considerable degree. But if there are no such parts, the ultrasonic wave would not damp so severely. By this study, the arthor could find several facts of spot welding phenomina. For example, the temperature rise of the contact surface of the two sheets is very rapid, and the contraction of 24S is so rapid that if the pressure of the electrode is low, the air gap would be resulted between the electrode tip surface and the sheet surface of the welded spot, causing the cracks in the nugget.
- 社団法人溶接学会の論文
- 1957-01-25