Transactions of Materials and Heat Treatment

Title：Precision forging process on automotive flange connection part based on finite element analysis

Authors： Tian Yading1 Zhu Huili2

Unit： 1.Intelligent Manufacturing College Xinxiang Vocational and Technical College 2.College of Mechanical Engineering Henan Institute of Technology

KeyWords： multi-station hot forging constitutive equation metal grid streamline forming load forging temperature mold wear

ClassificationCode：TG316.3

year,vol(issue):pagenumber：2023,48(12):9-17

Abstract：

For the problems of low production efficiency, high cost and poor performance of a type of automotive flange connection part, the multi-station automatic precision hot forging technology was attempted to apply to the production. Then, based on the forming theory, a 3-station forging plan of pre-forging, final forging and punching was formulated, and three different shapes of pre-forgings were designed. Furthermore, the rheological curve of forging material 40CrNiMo steel was obtained by hot compression test, and the constitutive equation was fitted. The forming processes of flange connection part under different schemes were simulated by using software Deform-3D, and the reliability of each process was analyzed based on the streamline situation of metal grid and the filling quality. The forming load and temperature distribution of forgings under different schemes were compared, and the wear of forging mold was predicted based on the mold wear model, and the optimal scheme was determined. Finally, a multi-station hot forging test of flange connection part was conducted, and the test results are consistent with the predicted results, the forgings at each station are well formed without defects, the dimensional performance meets the requirements, and the forging process is stable and fast.

Funds：

2022年度河南省科技厅科技攻关项目（232102220092）

作者简介：田亚丁（1976-），男，本科，副教授 E-mail：xixihaha1217@aliyun.com

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