LASER WELDING QUALITY IMPROVEMENT BY CONTROLLING THE DIRECTION OF WELDING WITH RESPECT TO PART-TO-PART GAP

摘要

The present invention relates to a method for improving the quality of laser welding by controlling a welding gap and a welding direction, including the following steps of: arranging a first steel sheet (100) and a second steel sheet (200), the steel sheet being welded, to overlap each other; measuring the gap (110) between the first steel sheet (100) and the second steel sheet (200); and using a laser beam (410) irradiated to weld the second steel sheet (200), while moving in the direction from small gaps to big gaps (110).