| 摘要 |
PURPOSE: A resistance welding method for a high strength steel sheet is provided to reduce a difference in melt generation time due to a difference of junction resistance and improve welding efficiency between relatively thin outer sheet and reinforcement sheet. CONSTITUTION: A resistance welding method for a high strength steel sheet comprises the steps of: placing an outer sheet(100) with relatively small contact resistance and an electrode(600) with a relatively large tip section adjacent to each other, arranging an inner sheet(300) with relatively large contact resistance and an electrode(500) with a relatively small tip section adjacent to each other, applying current to the electrodes so as to weld the outer and inner sheets and a reinforcement sheet(200) between the outer and inner sheets.
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