Transactions of Materials and Heat Treatment

Title：Analysis of blank holder force and fracture during the process of deep drawing for thin sheet

Authors： Li Erling Deng Peiran Yang Shanglei Cao Yanggen Wang Shuxun

Unit： Shanghai University of Engineering Science

KeyWords： intelligent control thin sheet deep drawing wrinkle vertical fracture

ClassificationCode：TG386.41

year,vol(issue):pagenumber：2014,39(6):55-59

Abstract：

The fracture reason and improvement measure of thin 304 stainless sheet during the deep drawing process were studied. Intelligent control system was applied in the deep drawing experiment; compared with traditional research, the process parameters were controlled precisely. Experiment results show that, for 0.28 mm thickness steel plate, under the same conditions of stamping and lubrication conditions etc., the optimum blank-holder force is 80 and 60 kN while plate diameter is 45.1 mm and 44.5 mm respectively. The result coincides with the tendency of simulation. Within a certain range, the wrinkling in the cylindrical parts can be improved by increasing the blank-holder force in the process of forming and the problem of vertical fracture occuring in the process of drawing for thin 304 stainless sheet is solved. The blank-holder force can be recorded precisely, which is benefit for seeing out the process of deep drawing for thin sheet materials rapidly and accurately.

Funds：

国家自然科学基金资助项目（51075256）；校基金资助项目（A-2600-12-01066）

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