Transactions of Materials and Heat Treatment

Title：Die forging technology and deformation law of steering knuckle for

Authors： Xu Zhouli Chen Tianfu Zhang Yunjun Hu Zhili

Unit： Wuhan University of Technology Hubei Tri-ring Forging Co. Ltd.

KeyWords： aluminum alloy steering knuckle die forging heating temperature fibrous tissue Deform-3D

ClassificationCode：TG316.2

year,vol(issue):pagenumber：2019,44(6):17-23

Abstract：

For the production of aluminium alloy steering knuckle, the current production process of aluminium alloy steering knuckle was introduced. Then, the main steps of steering knuckle die forging were simulated by software Deform-3D, and the influences of forging heating temperature on temperature, stress, strain and metal flow in the forming process were studied at different heating temperatures of 450, 500 and 535 ℃ (temperature at solution), respectively. The simulation results show that the increase of heating temperature can reduce the stress value in forging process, increase metal flow and reduce the impact force required by the equipment. However, due to the large amount of heat generated by friction during the die forging process, especially in the pre-forging process, the local temperature of forgings is increased. If the heating temperature is too high, it is easy to cause local over-burning. According to the influence of related factors, selecting the heating temperature of 450-500 ℃ during forging process reduces the required load force, improves plasticity, avoids local over-burning and ensure product quality. By sampling and observing the finished product at heating temperature of 450 ℃, the products display regular and organized fibrous structure, and their forming effects are good.

Funds：

湖北省技术创新专项（2017AAA008）；湖北省高等学校优秀中青年科技创新团队计划项目 (T201629)

许周礼（1994-），男，硕士研究生 E-mail：xuzhouli@foxmail.com 通讯作者：胡志力（1983-），男，博士，副教授 E-mail：zhilihuhit@163.com

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