Transactions of Materials and Heat Treatment

Title：Optimization on wear target parameters for gear shaft mold based on response surface method

Authors： He Wei Dong Wanpeng Sun Libin Meng Xiangyao Zhu Yue

Unit： Shanghai University of Engineering Science Shanghai Collaborative Innovation Center of Laser Advanced Manufacturing Technology Shanghai JD Chukyo Forging ＆ Stamping Co. Ltd.

KeyWords： response surface method gear shaft wear mold life regression analysis

ClassificationCode：TG315.2

year,vol(issue):pagenumber：2020,45(9):166-170

Abstract：

In order to improve the mold life, an optimization method was proposed by the combination of response surface method (RSM) and finite element method (FEM) with multi-objective forging process parameters as the optimization goal, and the second-order response surface regression analysis model combining finite element simulation and response surface method was established by taking the wear amount of pre-forging lower die for gear shaft as the optimization goal. Then, the fitting degree of the model was 96.57%, and based on the objective function of response surface, the optimal process parameters were obtained with the initial forging temperature of 1190 ℃, the friction coefficient of 0.3 and the mold hardness of 54 HRC. Furthermore, the target parameters were verified by numerical simulation software Deform-3D, and the wear amount was 2.48×10-4 mm. According to the the maximum allowable wear amount of 0.5 mm, the mold life was 2016 pieces, which met the production requirement of the expected value of 2000+200-100 pieces, and basically accord with the actual mold life of 2005 pieces obtained by production verification.

Funds：

克拉玛依市科技重大专项（2018ZD002B）；科技援疆计划（2019E0235）；上海工程技术大学研究生科研创新项目（18KY0506）

何伟（1995-），男，硕士研究生 E-mail：1107632098@qq.com 通讯作者：董万鹏（1976-），男，博士，副教授 E-mail：dong@sues.edu.cn

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