| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a laser welding technology allowing certain detection of possibility/impossibility of welding and quality of the welding during a welding process. <P>SOLUTION: This laser welding method by laser light irradiation includes the following processes: (a) a process of overlapping electroconductive objects to be welded or making them abut on each other, and setting them; (b) a process of measuring electric resistance between the objects to be welded set in the above process, obtaining a difference by subtracting a predetermined first setting value from the electric resistance, and resetting the objects to be welded when the difference is a positive value; (c) a process of irradiating laser light to perform laser welding when the difference is not more than zero in the above process; and (d) a process of measuring the electric resistance between the object to be welded during the above process, obtaining a difference between the electric resistance and a second setting value, and irradiating the laser light until the difference becomes not more than zero. <P>COPYRIGHT: (C)2013,JPO&INPIT |
