Fraunhofer IWS Dresden in cooperation with an industrial partner have developed a new technique for the welding of die-cast aluminum components and have managed to transfer it into series production. For the very first time, a weld joint, which is characterized by extremely low porosity and strongly reduced distortion, is generated with the help of brilliant laser radiation and high-frequency oscillation. Furthermore the component’s distortion is extremely low because of the concentrated, locally limited heat input. Traditional laser beam welding procedures cannot assure this high quality.
Laser beam welding techniques have found their way into diversified industrial serial applications. Procedures with integrated short-time heating, with material-adopted fillers and recently with high-frequency beam oscillation, enable the generation of crack-free joints made of hardenable and high strength steels, cast iron, aluminum, special alloys, and hot-crack-prone alloys with high stiffness.
Exhibitor: Fraunhofer IWS