Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg

Measurement and characterisation of the micro topography in the contact area between tool and workpiece in micro forming

Project Status: finished


In forming processes of metallic parts, the forming load from the tool to the workpiece is transmitted only by a certain fraction of the nominal contact area consisting of the real contact area RCA and the so-called closed lubricant pockets CLP. As the amount of these contact areas RCA and CLP is reduced drastically in micro forming processes due to the small part dimensions, their influence on the tribological conditions is increased significantly. Therefore, the knowledge about the real contact in these areas in micro forming is much more important than in conventional length scale. In the macro case, the real contact area is regarded as completely flattened during the forming processes while the nanotopography which emerges on single asperities is not considered. Within this project, this nanotopography on single asperities is described and evaluated in order to get an improved understanding of the tribological behaviour in micro forming processes. Thus, an improved simulative process design and the design of complex micro forming processes are enabled.

Research Groups

Letztes Update: 01.01.2010