Transactions of Materials and Heat Treatment

Title：Numerical simulation and process optimization on hot forging for terminal flange

Authors： Xue Dandan Dong Wanpeng Wang Aohan

Unit： Shanghai University of Engineering Science

KeyWords： terminal flange hot forging folding defect Deform-3D orthogonal test

ClassificationCode：TG31

year,vol(issue):pagenumber：2018,43(2):0-0

Abstract：

For the problem of folding defect of the terminal flange in final forging, the reason of defect formation was analyzed. According to a finite element analysis by software Deform-3D，the forming process of the terminal flange was simulated, and the three-step forming method of blanking, pre-forging and final forging were proposed by orthogonal test to optimize the process parameters. Then, the blank size, friction coefficient, pressing speed and final forging flash thickness were adjusted, the folding angles of die edge, middle hole and boss were reduced effectively, and the risk of cracking was reduced. Finally，the qualified forgings were obtained. The result shows that when the parameters with blank diameter of Φ50 mm,length of 190 mm, friction factor of 0.25, pressing speed of 60 mm·s-1,pre-forging flash thickness of 4 mm, final forging flash thickness of 3.8 mm are chosen, the forging quality is better by adapting the scheme of blankingpre-forgingfinal forging. Eventually, the accuracy and reliability of the simulation results are verified through the actual production, and the requirements of the product are met.

Funds：

中京锻压锻件CAD.CAE设计项目资助(E4-6000-15-0256);上海工程技术大学研究生科研创新项目资助(16KY0506)

作者简介：薛丹丹(1993-)，女，硕士研究生 E-mail：13813733464@163.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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