| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a laser beam welding method by which the welding distortion is hardly conspicuous on a surface with a weld part being not exposed. <P>SOLUTION: In the laser beam welding method, the welding is performed by forming a plurality of spot weld parts 7 while relatively scanning laser beams L to a plurality of overlapped members 3, 5 to be welded. Laser beams are irradiated so that the plurality of non-through spot weld parts 7 are arranged at random. In this method, the plurality of non-penetrated spot weld parts 7 are formed, and the non-through spot weld parts 7 are arranged at random. Thus, in a surface with the weld parts 7 being not exposed, the welding distortion is less recognized than a case in which the welding distortion appears regularly, and as a result, the welding distortion is hardly conspicuous. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
