Transactions of Materials and Heat Treatment

Title：Influence of built-in heating channel on temperature field of aluminum alloy forging dies

Authors： Qi Hongwei1 Hu Zeqi1 2 3 She Yongshuo1 Wang Yitong1

Unit： 1.School of Automotive Engineering Wuhan University of Technology 2.National Key Laboratory for Remanufacturing 3.Hubei Longzhong Laboratory Wuhan University of Technology

KeyWords： aluminum alloy forging die heating built-in channel temperature control system multi-channel

ClassificationCode：TG146.3

year,vol(issue):pagenumber：2025,50(7):198-210

Abstract：

For the problems of poor thermoplasticity, narrow forging temperature window and large thermal conductivity in the hot forging of automotive aluminum alloy steering knuckle with arm, and the key problems of surface cracks, coarse grains and adhesions caused by improper die temperature control, Deform numerical simulation models of aluminum alloy forging with distributed built-in heating channels were established, and the influence of built-in channels on the load-bearing capacity of dies were verified. Then, the influence laws of heating power and heating channel aperture on its heating effect were explored, and a multi-channel die heating temperature control system was built. Furthermore, the accuracy of numerical simulation model and the effect of die temperature control were verified by thermocouple and thermal imager test experiments. The results show that the die temperature can rise to 200 ℃ within 25 min, and the temperature control error is ±10 ℃, which provides an important reference for the structural design on the built-in heating channel of forging die and the control of multi-channel temperature field.

Funds：

国家重点研发计划(2022YFB3706903)；湖北省自然科学基金资助项目（2023AFB060）；再制造技术国家级重点实验室基金资助项目（61420052023D011）；襄阳市科技计划项目（XYZX20230801）；湖北省科技重大专项（2023BCA006）

作者简介：戚宏伟（2000-），男，硕士研究生 E-mail：eternity_qhw@163.com 通信作者：胡泽启（1991-），男，博士，副研究员 E-mail：zeqi.hu@whut.edu.cn

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