Transactions of Materials and Heat Treatment

Title：Stamping-forging thickening process in the centeral area of disc-like part

Authors： Zhao Yanzhang Jin Junsong Wang Xinyun Deng Lei

Unit： Huazhong University of Science and Technology

KeyWords： stamping-forging forming drawing pressing thickening of sheet metal controlling variables method disc-like part

ClassificationCode：TG381

year,vol(issue):pagenumber：2016,41(10):57-63

Abstract：

A drawing-pressing forming process was proposed to thicken the centeral area of a round sheet metal, and an FE simulation proposal was designed based on controlling variables method. Then, the drawing-pressing forming process was researched, and the influences of forming parameters on the maximum thickness and the thickness fluctuation were investigated. Furthermore, the results of FE simulation were verified by experiments. The results show that the punch stroke H increases with the decrease of the punch radius R0 and the clearances D between punch and die, and both the maximum thickness and the thickness fluctuation E increase significantly. However, the influence of the radius of the punch top R1 on the thickening effect is slight. Therefore, under different technological parameters, the difference of the lateral wall angle and the partial thickness reduction of drawing parts led to the difference between radial stress and material hardening behavior at the pressing step. Finally, two forming processes of uniform thickening in the center zone and non-uniform thickening in the annular zone were realized.

Funds：

国家自然科学基金资助项目（51205144）

作者简介：赵衍璋（1990-），男，硕士研究生 E-mail：zhaoyanzhang333@sina.com；通讯作者：金俊松（1980-），男，博士，讲师 E-mail：jsjin@hust.edu.cn

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