| 摘要 |
PROBLEM TO BE SOLVED: To provide an excellent weld joint without generating defective welds even when a member to be welded is thin, or when a clearance is present between members to be welded by reducing the melted area of a base metal at a joined part to realize the high-speed welding. SOLUTION: In performing the laser beam welding by butting two plates 3, 4 of different thickness, the laser beam is radiated diagonally from the thick plate side so as to offset the position of radiation on the side of the thick plate 3 from a joined part 1. The area of the melted part is reduced to realize the high-speed welding. |
