POSCO Holdings Inc.
METHOD FOR COATING ELECTRODE FOR RESISTANCE WELDING, AND ELECTRODE FOR RESISTANCE WELDING

Abstract:

A coating method for a resistance-welding electrode and the resistance-welding electrode are provided. According to the present invention, it includes: a tungsten carbide preparation step for preparing tungsten carbide (WC) as a coating material for being coated on an electrode surface; a tungsten carbide powder formation step for forming the tungsten carbide (WC) into a tungsten carbide powder having a predetermined average particle size; and a tungsten carbide powder coating step for performing coating with a predetermined coating thickness to the electrode surface by spraying the tungsten carbide (WC) powder at a high speed by a cold spray coating process that is capable of coating at room temperature without powder melting.