Transactions of Materials and Heat Treatment

Title：Forming digital simulation and process research based on tooth top surface folding defect in hot forging secondary forming for automobile differential gear

Authors： Li Linxin1 Cui Zhiliang2 Lai Lili1 Feng Ling1

Unit： 1. Intelligent Manufacturing College Sichuan Vocational College of Chemical Technology 2. Sichuan Zhongyou Machinery Limited Liability Company

KeyWords： automobile differential gear hot forging secondary forming folding defect blank temperature digital simulation

ClassificationCode：

year,vol(issue):pagenumber：2022,47(3):23-27

Abstract：

For the folding defect of tooth top surface in the hot forging secondary forming of automobile differential gear, the finite element three-dimensional modeling and simulation were carried out by software UG and Deform-3D, and the cause of the defect was found. On this basis, by adjusting the blank size, an ideal forming effect was obtained. Then the influence of friction factor on the forming quality was investigated, and it was concluded that the defect appeared again when the friction factor was 0.3. Furthermore, taking the blank temperature and forging speed as variables, the influences of the two on the forming quality were investigated, it was obtained that the maximum forming load decreased with the increase of blank temperature and forging speed, and the defects appeared again when the metal deformation resistance was lower than a certain degree. Finally, the optimal process parameters were determined. At last, through the real production, the products without defects were obtained, which verified the correctness of the optimized process parameters and improved the production efficiency.

Funds：

四川省教育厅课题 ( 17ZB0277)

作者简介：李林鑫（1984-），男，硕士，副教授 E-mail：179207987@qq.com

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