Transactions of Materials and Heat Treatment

Title：Research on structural damage and life of upsetting mold for vehicle torsion bar end

Authors： Lyu Caiqin Wang Tianjiao Li Jingji Ju Yuhui

Unit： North University of China Inner Mongolia First Machinery Group Co. Ltd.

KeyWords： upsetting torsion bar end mold wear mold life initial forging temperature

ClassificationCode：TG316

year,vol(issue):pagenumber：2022,47(10):216-222

Abstract：

When the vehicle torsion bar end was upset, its deformation was restricted and limited by the used upsetting mold, and proper mold design can not only improve the production efficiency, but also improve the structure and mechanical properties of the torsion bar end, increase the service life of the torsion bar and reduce the production cost of enterprise. Therefore, the finite element models of the torsion bar end and the upsetting mold were established, which was meshed by software DEFORM-3D. Then, the entire upsetting process was simulated, and after upsetting under different mold structure shapes and different initial forging temperatures, the mold wear, the mold life, the stress of torsion bar end and the metal material flow rate and streamline distribution of torsion bar end were analyzed. The results show that at the initial forging temperature of 1250 ℃, the reasonable mold structure for upsetting can reduce the mold wear and prolong the mold life, and the comprehensive performance of the formed torsion bar end is better.

Funds：

国家自然科学基金资助项目（51275489）

吕彩琴（1968-），女，博士，教授，E-mail：lvcaiqin@nuc.edu.cn

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