OPTIMISED WORK PIECE PROPERTIES IN SHEET METAL FORMING PROCESSES BY THE USE OF HIGH STRENGTH STEELS

Kolleck, R.; Rauer, J.; Weidner, T.; Kleiner, M.

University of Erlangen-Nuremberg, Germany

In this paper the application of two sheet metal forming processes based on working media are described. Pneumomechanical deep drawing (PMT) as well as high-pressure sheet metal forming (HBU) allow the adjustment of a more homogenous strain distribution in the workpiece as it can be realized by using conventional deep drawing. FeP04 was also regarded as high-strength steels, such as ZStE340 and DP500. With an optical strain analysis system the workpiece properties are determined. The parallel strategy of experimental investigations and numerical analysis offers the possibility to transfer the results from the workpiece Minihood to an industrial engine hood. The research projects were funded by the Studiengesellschaft Stahlanwendung e.V. Düsseldorf.

Keywords : deep drawing, pneumomechanical deep drawing, high-pressure sheet metal forming, high-strength steel, optical strain analysis, FE-simulation