VERFAHREN ZUM SCHWEISSEN VON BESCHICHTETEN BLECHEN MITTELS EINES ENERGIESTRAHLES WIE EINES LASERSTRAHLES

摘要

A method is claimed for welding, by an energy beam, notably a laser beam, of sheets (2, 3) coated with a material (4 - 7) having an evaporation temperature lower than the melting temperature of the material of the sheets (2, 3), such that the coating material evaporates during welding, and thereby creates vapour in the capillary (9) formed by the material melted by the welding. The method consists of providing an energy beam (1) directed on the welding zone and adapted in a manner that favours the evacuation of the vapour to the outside, notably through the capillary (9).