Transactions of Materials and Heat Treatment

Title：Optimization on process parameters for automobile rear wheel cover based on response surface method

Authors：

Unit：

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ClassificationCode：TG386.3

year,vol(issue):pagenumber：2021,46(10):70-77

Abstract：

For the automobile rear wheel cover, the stamping process parameters were optimized by the response surface method. Then, the blank holder force, resistance coefficient of drawbead, friction factor and clearance between punch and die were selected as the process parameter variables, and the optimization goals are the maximum thinning rate in the drawing process and the maximum springback amount after the trimming process. Furthermore, the response surface test was designed by Box-Behnken method, and the response surface model between the process parameters and the maximum thinning rate in the drawing process and the maximum springback amount after the trimming process was established. Through the optimization of the response surface model, the blank holder force was 350 kN, the resistance coefficient of drawbead was 0.40, the friction factor was 0.13, and the clearance between punch and die was 0.6 mm. And the errores of the maximum thinning rate in the drawing process and the maximum springback amount after the trimming process was 0.5% and 0.2% respectively, which were obtained by the optimized parameters combination simulation, which can replace the finite element model to calculate. According to the optimal process parameters combination, the die surface springback compensation was guided and the trial production was conducted, which could produce the automobile rear wheel cover meeting the quality requirements.

Funds：

国家自然科学基金资助项目（51775249）

作者简介：魏鑫（1996-），男，硕士研究生 E-mail：451099074@qq.com 通信作者：王雷刚（1963-），男，博士，教授 E-mail：lgwang@ujs.edu.cn

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