METHOD OF MANUFACTURE OF ELECTRODE FOR RESISTANCE SPOT WELDING Russian patent published in 1997 - IPC

FIELD: mechanical engineering; making of complex profile electrodes for resistance spot welding. SUBSTANCE: in process of calibration of cut-to-length blank, cylindrical head is formed on its upper portion, and working part of electrode, on its lower portion. Cylindrical head is expanded by reverse forcing out of space in form of straight truncated cone. preliminary profile of cooling channel is formed by cold drawing thinning of wall of cylindrical head. Then simultaneously seating cone is formed and final profile of cooling channel is made by upsetting and reducing. Process is carried out in two steps by deformation of thinned wall and part of cylindrical head in zone of location of space conical surface. EFFECT: enlarged operating capabilities. 6 dwg