Abstract: At present,the resistance spot welding process is widely used for body-in-white welding at home and abroad. However,due to the impact of welding spot position,angle,base metal plate gap,electrode,welding parameters and other factors during resistance spot welding,a large number of welding spatters are inevitably generated. Especially in recent years,the use of galvanized sheet and high-strength steel plate for body-in-white has led to particularly serious spatter problem. Based on the actual production situation,this paper analyzes the causes of spot welding spatter,identifies the influencing factors of spatter in the process of body-in-white welding,and puts forward corresponding control methods to reduce welding spatter,so as to reduce the probability of spatter and improve the welding quality of body-in-white.

Key words: body-in-white welding, resistance spot welding, spot welding spatter control