点熔接の熱伝導について : 第1報

概要

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In this paper, thermal conduction of spot welding is calculated as one dimension phenomina. There are four kinds of resistances which generate heat on spot welding. These are 1 contact resistance between two sheets, 2 specific resistance of sheets, 3 contact resistance between electrode tip and sheet, 4 specific resistance of electrode tip. Therefore, we must consider four sources of heat, but electrode has so large heat capacity that we can suppose contact plane of electrode and sheet is always at 0℃ during welding. So the author solved differential equations of following four cases. 1 one substance (sheet only), neglecting a (thermal coefficient of specific resistance), 2 one substance, considering a 3 two substances (electrode and sheet), neglecting a, 4 two substances, considering a, but special case. And by putting numercal values in each equation, temperature-time curves as follows are obtained.
社団法人溶接学会の論文
1957-11-25