Laser/arc hybrid welding process with appropriate gas mixture

摘要

Aluminum, aluminum alloys, steel and stainless steel members may be welded by using a Nd:YAG laser in combination with an arc electrode which is fusible and protecting the joint being made with a gaseous mixture which consists of at least 70% of either argon or helium by volume and less than 30% by volume of oxygen and carbon dioxide. Appropriate oxygen/carbon dioxide ratios are given for various metals and argon/helium ratios An Independent claim is also included for : Utilization of the method on vehicle bodywork, plates of different thickness, members of different metals and tubes