Method and device for producing a butt joint between two sectional bars of metal, in particular of aluminium or an aluminium alloy

摘要

According to the method, the sectional bars, by means of a first laser beam guided along the joint gap (6) between the joining surfaces, are freed of a possibly existing surface coating (4) on the section side face (3) facing this laser beam in a marginal strip (5) adjoining the joint gap (6) and are welded to one another by a second laser beam made to follow the first laser beam (8) on the same section side face (3). IMAGE