| 摘要 |
A first ( 5 ) of the sheets has, near the zone ( 6 ) of overlap, stiffening parts ( 74 ) designed to resist the bending of the sheet along the zone of overlap. At least one region of the first sheet ( 5 ) is made to project, cantilever fashion, into the zone ( 6 ) of overlap. The stiffening parts are located near this cantilevered region. A pressing mechanism of a laser welding installation ( 2 ) is made to press against another sheet ( 4 ) to hold the sheets in contact with one another at the zone ( 6 ) of overlap. The laser welding installation is used to weld the sheets together along the zone of overlap. Application to the welding together, by transparency-welding, of sheets of the external skin of railway vehicle bodies. |
