| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a leaser welding method by which a laser head for irradiation with laser rays can be freely moved. SOLUTION: The laser rays are emitted to the joined part from the laser head 7. Then most of the laser rays are transmitted through a sheet 5 and a duct 3 and then absorbed by an instrument panel 2. Consequently, the instrument panel 2 is thermally melted and this molten part is joined to the duct 3.</p> |
