Effects of hydraulic pressure on shape accuracy of drawn circular cups during micro hydro deep drawing

Authors

Liang Luo, University of WollongongFollow
Zhengyi Jiang, University of WollongongFollow
Dongbin Wei, University of WollongongFollow
Hideki Sato, Tokyo Metropolitan University
Tsuyoshi Furushima, Tokyo Metropolitan UniversityFollow
Kenichi Manabe, Tokyo Metropolitan University

RIS ID

111096

Publication Details

Luo, L., Jiang, Z., Wei, D., Sato, H., Furushima, T. & Manabe, K. (2017). Effects of hydraulic pressure on shape accuracy of drawn circular cups during micro hydro deep drawing. Materials Science Forum, 879 2274-2279. Materials Science Forum

Abstract

Micro hydro deep drawing is a promising technology to fabricate micro metal products with complex 3D shapes. However, the size effects in the micro hydro deep drawing become considerable and significantly influence shape accuracy of drawn cups. In this study, a Voronoi micro scale simulation model was developed to consider the size effects of SUS304 foils. A surface layer model was additionally applied in the simulation to further explain the size effects. The micro hydro deep drawing experiments were conducted with annealed SUS304 foils and the drawn cups were examined. The wrinkling phenomenon was generally aggravated with the hydraulic pressure. Simulation results also show that the high hydraulic pressure does not improve the shape accuracy of the drawn cups as that in the normal scale hydro deep dawning process does. The simulation results are in accordance with the experimental results.