Transactions of Materials and Heat Treatment

Title：Finite element analysis and verification on wear of hot forging die for automobile flange fork

Authors： Li Xi Zhang Ying Chen Zhiying Sun Libin Li Yingjie Sun Yan Yao Shuo

Unit： Shanghai University of Engineering Science Jiangsu Nanyang Chukyo Technology Co. Ltd.

KeyWords： hot die forging automobile flange fork die wear Archard wear theory maximum total wear depth

ClassificationCode：TG316

year,vol(issue):pagenumber：2022,47(2):19-24

Abstract：

In hot forging process, the die surface is constantly affected by cyclic mechanical load and thermal shock, so wear has become the main cause of die failure.Aiming at the problem of serious die wear for automobile flange fork, a hot forging process of flange fork was put forward, and based on the Archard wear theory model, the thermal-mechanical coupling finite element model in the hot forging process of flange fork was established. Then, the forming situation of forgings in the hot forging process was studied, and the position of the most serious die wear was predicted. Finally, the finite element simulation results were verified by experiments. The simulation and experiment results show that the die wear situation after pre-forging is the most serious in the whole hot forging process, in which the most serious wear area of pre-forging lower die appears at the fillet of cavity, and the maximum total wear depth of the pre-forging lower die after 1000 times of forging simulations is 2.75 mm, while the maximum total wear depth after the actual production of 1000 forgings is 2.70 mm. The simulation results are basically consistent with the experimental results, which shows that the finite element model of flange fork established based on Archard wear theory model can accurately predict the die wear after hot forging.

Funds：

上海市闵行区产学研合作计划（2019MHC073）

作者简介：李禧（1995-），男，硕士，E-mail：lixiyour@163.com；通信作者：张莹（1980-），女，博士，讲师，E-mail：jerrinzhang@163.com

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