WELDING METHOD FOR COATING STEEL SHEETS

摘要

PURPOSE: A coated steel sheet welding method is provided to minimize the time for welding by removing coating of coated steel sheets along welding lines in a specific direction and performing welding in the reverse direction. CONSTITUTION: A coated steel sheet welding method comprises the steps of: setting two coated steel sheets(20,30) on a jig(J), projecting a laser beam(LB1) of a non-focusing region along welding lines of the coated steel sheets in a specific direction to remove coating(C) of the coated steel sheets, and performing laser welding by projecting a laser beam(LB2) of a focusing region along the welding lines in the reverse direction.