| 摘要 |
<p>The laser welding process for metals, comprises disposing a ball (1) in contact with a periphery of an opening (2) through an aluminum metal part (3), and welding the ball on the periphery of the opening by using a laser emitting a beam of annular section (4). The ball is preformed by electric welding before the laser welding step. Independent claims are included for: (1) a process of manufacturing an accumulator; and (2) an accumulator.</p> |
