Product Code: ICAL07_M604

Study of Size Effects by Laser-Assisted Micro Forming
Authors:
Katja Samm, Laser Zentrum Hannover E.V.; Hanover Germany
Mahdi Terzi, Helmut-Schmidt University; Hamburg Germany
Jorge Quintanilla-Sanchez, Laser Zentrum Hannover E.V.; Hanover Germany
Andreas Ostendorf, Laser Zentrum Hannover E.V.; Hanover Germany
Jens Peter Wulfsberg, Helmut-Schmidt-University; Hamburg Germany
Presented at ICALEO 2007

The application of metal forming technologies to the production of metallic micro parts is limited by problems arising from size effects related to small dimensions. Subject to this study is the development of a novel laser-assisted micro-forming technique for stainless steel. UV laser structured sapphire tools are used as forming moulds. A localized region of the work piece is heated through the transparent tools using second laser beam (l = 809 nm) to enable the micro-forming process. Key aspects of the presented research are the influence of laser radiation on the mould on the one hand and the influence of scaling effects arising from miniaturisation on the work piece on the other hand. The advantages and disadvantages of several strategies are discussed.