Carbon di:oxide laser beam welding

摘要

In the carbon dioxide laser beam welding of aluminium alloys using a shielding gas (mixt.) directed through shielding and working gas nozzles for plasma control at the welding point at the workpiece surface, the novelty is that the shielding gas consists of pure Ne or a gas mixt. of Ar, He, N2, CO2, H2 and O2 with more than 25 vol.% pure Ne.The laser is a longitudinal flow, h.f. excited, high power carbon dioxide laser, the welding beam of which is focussed by a cooled parabolic mirror.