Transactions of Materials and Heat Treatment

Title：Optimization on stamping process parameters of automobile door frame based on Fastamp and orthogonal test

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ClassificationCode：TG386

year,vol(issue):pagenumber：2021,46(1):70-75

Abstract：

For the complicated stamping process of an automobile door frame, which is prone to cracks and wrinkles, the drawing process with the greatest influence on the forming quality was selected and analyzed, and the drawing simulation model of automobile door frame was established based on the domestic software Fastamp. Then, the blank holder force, the friction coefficient, the stamping speed and the die clearance were selected as main influence factors of orthogonal test, and the orthogonal test with four factors and four levels was established. By the comprehensive scoring method and range analysis method, the optimum combination of process parameters was obtained with the friction coefficient of 0.105, the blank holder force of 2400 kN, the stamping speed of 3000 mm·s-1 and the die clearance of 1.5 mm. Finally, the maximum thinning rate and the maximum thickening rate were simulated by Fastamp, and on this basis, the actual production verification was conducted. The result shows that the final part has good forming effect with the maximum thinning rate of 20.6% and the maximum thickening rate of 7.4% to meet the quality standards, and this method provides a reference for improving the forming quality of automobile door frame.

Funds：

基金项目:江苏省高等教育教改研究项目(2017JSJG068)；扬州市科技计划立项项目(YZ2018143)；扬州市职业大学科研重点项目（2017ZR03）

作者简介：张翔（1974-），男，硕士，副教授 E-mail：269690260@qq.com

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