Transactions of Materials and Heat Treatment

Title：pre-bulging during hydromechanical deep drawing for conical cups with inclined flange

Authors： WANG Hui-ting PENG Fei TAI A-yuan ZHANG Jing YAN Jun

Unit： Anhui University of Technology

KeyWords： sheet forming hydromechanical deep drawing aluminum alloy

ClassificationCode：TG386

year,vol(issue):pagenumber：2012,37(3):31-35

Abstract：

The effects of pre-bulging during hydromechanical deep drawing of conical cups with inclined flange were investigated using experiments coupled with FE method. The result shows that the reason for obviously thinning at the bottom of the formed parst is loss of synchronization during the punch bottom touching the blank; the punch position in the pre-bulging stage affects the thickness distribution of the wall at the punch cornor. An appropriate pre-buging loading path along with right position of the punch during prebulging process can contribute to reduce the wall thinning rate, and reduce the traces caused by wall thinning at the bottom of the formed parts.

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Reference：

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