The working group Welding and Beam Technology is concerned with the further development of welding production methods and process optimization with regard to weld seam quality and its effects on weld seam and component properties. The focus is on fusion welding, weld seam repair and additive manufacturing of metallic parts and components.
Gas-shielded arc welding processes, such as metal active gas (MAG), metal inert gas (MIG), tungsten inert gas (TIG) and tungsten plasma welding, with fully mechanized execution using state-of-the-art power sources, enable high-quality joints even with materials with limited welding suitability.
The thermal tool of beam technology is the laser or electron beam. Both methods are characterized by a high power density of the beam in the focal point and the resulting vapor capillary in the workpiece. Due to the flow of liquid melt around the vapour capillary, which occurs during a relative movement between the workpiece and the beam, the deep welding effect develops. This leads to a ratio of weld seam depth to seam width of up to 40:1, which is the characteristic process feature of beam welding processes compared to conventional fusion welding processes.
About our research
The research focus of the working group is on welding process development for materials and components with limited suitability for welding and on welding process optimization to increase the quality of execution. The focus is on joining properties, such as the occurrence of irregularities, welding metallurgy, mechanical properties and residual stresses.
Welding technology production processes are used for joint welding, weld seam repair and additive manufacturing. Current research projects are working with high- and low-alloy steels, wrought and die-cast aluminium alloys and copper.