Product Code: ICA11_M202

Flexible and Efficient Laser Remote Welding of Ultra-Thin Metal Foils
Authors:
Andreas Patschger, JENOPTIK Automatisierungstechnik GmbH; Jena Germany
Matthias Hild, JENOPTIK Automatisierungstechnik GmbH; Jena Germany
Jean Pierre Bergmann, University of Applied Science Jena; Ilmenau Germany
Jens Bliedtner, University of Applied Science Jena; Jena Germany
Presented at ICALEO 2011

This paper discusses investigations regarding flexible and efficient strategies of laser remote welding of ultra-thin metal foils ( 50 µm) which are applied in area of electronics, packaging, sensor systems and construction. A single mode fiber laser was used equipped with a scanner head (unit) and diverse objectives. Thus different optical settings and material thicknesses could be tested and compared due to process stability, reliability and efficiency. Forms of weld were verified due to welding applicability. The long term stability of the optical setting was determined related to focus shift and beam shape in the working plane. The specimens were analyzed with methods of micro-sections, micro hardness and tensile strength tests. Thus it could be shown that laser remote welding of ultra-thin metal foils is a well suited modern technology which is able to substitute former slower or inflexible techniques respectively compound materials with a high in-house production depth.