ELECTRODE MATERIAL FOR RESISTANCE WELDING

摘要

PURPOSE:To improve high-temp. hardness with substantially no decrease in electrical conductivity and to considerably decrease the deformation consumption of the top end of an electrode by incorporating a specific ratio each of Cr and Sn into an alloy compsn. for the electrode material and consisting of the balance copper and unavoidable impurities. CONSTITUTION:The copper alloy contg. 0.4-1.0wt% Cr, 0.05-0.2wt% Sn and the balance copper and unavoidable impurities is used as the electrode material for resistance welding. The high-temp. hardness is thus improved with substantially no decrease in the electrical conductivity. The deformation consumption of the top end of the electrode is therefore considerably decreased and the life of the electrode is remarkably improved.