Transactions of Materials and Heat Treatment

Title：Optimization on precision casting and forging composite forming process for aluminum alloy steering knuckle of high-end business vehicle

Authors： Xia Juchen1 Deng Lei1 Zhang Mao1 Zhang Jiacheng1 Wang Xinyun1 Feng Yi2 Yu Jun2 Xia Zili2

Unit： 1.School of Materials Science and Engineering Huazhong University of Science and Technology 2.Wuhan Newwish Technology Co. Ltd.

KeyWords： aluminum alloy steering knuckle extrusion casting precision casting and forging composite forming precision forging with small flash

ClassificationCode：TG316

year,vol(issue):pagenumber：2024,49(8):1-5

Abstract：

For A356 aluminum alloy steering knuckle, the material, structure and performance characteristics of the part and the shortcomings of the existing production processes were analyzed in detail. Based on the comparison and analysis of the advantages and disadvantages of three kinds of aluminum alloy extrusion casting processes, it was proposed to perform the precision forging with small flash on the precision extrusion casting parts,and enhance the internal density of parts by plastic forming to achieve the goal of improving their mechanical properties and load-bearing capacity. Furthermore, through analyzing the mechanism of precision forging process, an optimization model for process parameters was established, and the composite process flow of extrusion casting and precision forging with small flash for steering knuckle was clarified. The trial production verification shows that this process scheme has the characteristics of a short process flow, material saving, energy conservation, high quality of part, low production cost and good economic benefits, which has been well-received by high-end customers at home and abroad.

Funds：

湖北省自然科学基金面上项目（2023AFB564）

作者简介:夏巨谌（1941-），男，学士，教授 E-mail：xjc_hust@163.com 通信作者:张茂（1989-），男，博士，副教授

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