Transactions of Materials and Heat Treatment

Title：Die forging defects and process analysis for automobile brake thrust lever

Authors： Liu Xiaoli1 2 3 Liu Hong1 Zheng Fuyuan1 Liu Zhiqiang1 Zhao Changde1 Zhang Ming2 Huang Suxia3 Wang Zhanyi2 Yan Bin4 Guo Jinxi2

Unit： 1.Golden Horse Industry Group Co. Ltd. 2.Hebei Province Key Laboratory of Intelligent Industrial Equipment Technology Institute of Machinery and Equipment Engineering Hebei University of Engineering 3.School of Mechanical Engineering University of Science and Technology Beijing 4.School of Mechanical Engineering Anyang Institute of Technology

KeyWords： streamline defect die forging brake thrust lever upsetting flattening

ClassificationCode：TG316

year,vol(issue):pagenumber：2023,48(8):25-31

Abstract：

Streamline defect is one of the key problems restricting the quality of die forging products, so it is urgent to solve the problem of streamline defect in the die forging process for automobile parts. Therefore, based on the plastic processing theory and thermal-mechanical coupling process, the whole process of die forging was established by finite element software DEFORM-3D, the streamline defect problems in the die forging process of automobile brake thrust lever were analyzed, and the accuracy of the model was verified by experiments. Then, according to the structural characteristics of automobile brake thrust lever, two die forging process schemes of JT and HJT were designed, and the forgings forming process, loading mode,forming quality of forgings, temperature distribution of forgings, streamline distribution of forgings and force distribution of the two schemes were compared and analyzed. The research shows that HJT scheme can improve the streamline distribution and loading distribution in the die forging process, and significantly improves the tensile strength and material utilization of the forgings, which lays a theoretical foundation for solving the problem of streamline defect.

Funds：

河北省教育厅青年基金资助项目(QN2021209)；国家自然科学基金资助项目(52005148)；山东省科技型中小企业创新能力提升工程项目（2022TSGC2510，2022TSGC1231）；安阳市科技计划资助项目(2022C01GX015)

作者简介：刘晓立(1986-)，男，博士，讲师,E-mail：liuxiaoli01206332@163.com

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