RESISTANCE SPOT-WELDING METHOD FOR ALUMINUM ALLOY

摘要

PURPOSE:To improve the joining strength and the service life of an electrode at the time of spot-welding the aluminum alloy. CONSTITUTION:In the case of simultaneously executing both of the welding by arranging a high melting point aluminum alloy 2 at the positive electrode 1 side and a low melting point aluminum alloy 4 at the negative electrode 3 side and the welding by using the electrodes provided with the tip shape formed so that the impression diameter of the positive electrode 1 side is smaller than that of the negative electrode 3 side, the joining strength and the service life of the electrode are drastically improved at the time of spot-welding mutually the aluminum alloys having different melting point.