| 摘要 |
<p>PROBLEM TO BE SOLVED: To form a maximized bead width in a lap boundary by varying penetration shape through the pressure of a gas blown at a weld zone in the laser welding of a thick plate. SOLUTION: In the lap welding of a thick plate, a lap boundary bead width can be enlarged, making joining quantity per pass increased double or more; therefore, the joining strength per pass is also doubled, reducing by half or less the entire welding length for the purpose of obtaining a joining strength required designwise.</p> |
