Transactions of Materials and Heat Treatment

Title：Wear analysis and optimization of hot forging mold for automobile torque arm based on orthogonal test

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ClassificationCode：TG76

year,vol(issue):pagenumber：2021,46(5):185-189

Abstract：

Based on the Archard theory wear model and software Deform-3D, the finite element model of torque arm in hot forging was established. Then, the initial temperature of billet, the initial temperature of mold, the moving velocity of upper mold and the friction coefficient were combined by orthogonal test method, and the wear amount of mold was obtained by simulation. Furthermore, the test data were processed by the range analysis method, and the influences of various parameters on the wear of hot forging mold and the optimal parameter combination were obtained. The results show that the influence degree of each parameter on mold wear from large to small is shown as follows: the moving velocity of upper mold >the friction coefficient > the initial temperature of billet > the initial temperature of mold. According to the actual production situation, the optimal combination of process parameters is obtained with the initial temperature of billet for 1200 ℃, the initial temperature of mold for 300 ℃, the moving velocity of upper mold for 10 mm·s-1 and friction coefficient of 0.3, and the mold wear amount is 0.000333 mm.

Funds：

江苏省高等学校自然科学研究项目（19KJD460008）；宿迁市科技计划项目（K202003，Z2019111，Z2019116）

翟崇琳（1983-），女，硕士，讲师 E-mail：13101868227@163.com

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