| 摘要 |
PURPOSE:To perform the spot welding of aluminum material by an extremely simple method and also, to satisfactorily maintain external appearance properties after welding, as well. CONSTITUTION:When plural aluminum or aluminum alloy plates 3 and 4 are superposed on each other to perform spot welding by using a spot welding gun, resistance members 5 made of materials having a higher electric resistance value than electrode tips 1 and 2 of the spot welding gun B are interposed between the spot welding gun B and the plates 3 and 4. |
