Sound Welding of Copper: Laser Beam Welding in Vacuum

By Laser Beam Welding in Vacuum (LaVa) the process capability can be increased significantly. Weld metal ejections at low welding speeds can be prevented. By applying this process variation, high quality welding of copper at a low power level between 4 kW and 8 kW and a low intensity level between 50 kW/mm2 and 80 kW/mm2 of a multimode solid state laser becomes possible for penetration depths of 3 to 8 mm.