Transactions of Materials and Heat Treatment

Title：Forging die design of Great Wall 2020 steering knuckle and production verification of its forging process

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ClassificationCode：TG315.2

year,vol(issue):pagenumber：2021,46(1):24-28

Abstract：

For the structural characteristics of Great Wall 2020 automobile steering knuckle flange with complex cross-sectional shape, too thick shaft, too thin rod, and large distance between front and rear horns, through the analysis and explanation of the local sizes for forgings, combined with years of experience in forging automotive steering knuckles, the key parts of pre-forging cavity, final forging cavity and flash bridge were designed, analyzed and demonstrated respectively, and the batch production was carried out by the heating extrusion of blank making and the die forging compound forming process to obtain that the pre-forging step was the most critical step in the forging process of steering knuckle. Therefore, the excellent pre-forging design not only improved the filling performance of final forging cavity, but also prevented folding of forgings. The on-site production verification of 2020 automobile steering knuckle shows that the material utilization of forgings reaches 78.2%, which is 8.2% higher than that of similar steering knuckle, and the qualification rate reaches 99.3%. Meanwhile, the die life extends 40000 pieces. Thus, the research conclusion has important practical significance to improve the qualification rate of forgings and the forging die life.

Funds：

基金项目:重庆市教委科学技术研究项目（KJQN202003406）

作者简介：徐皓（1979-），男，硕士，教授,正级高级工程师 E-mail：xuhaolj@mail.ustc.edu.cn 通讯作者：刘江（1982-），女，硕士，中级教师 E-mail：379280626@163.com

Reference：

[1]赵一平，张如华，蒋鹏，等. 汽车典型锻件生产[M]. 北京：国防工业出版社，2009.

Zhao Y P，Zhang R H，Jiang P,et al. Automotive Typical Forgings Production [M].Beijing: National Defense Industry press, 2009.

[2]中国机械工程学会锻压学会. 锻压手册[M].北京：机械工业出版社，2013.

Chinese Society of Mechanical Engineering Forging Society. Forging Manual [M]. Beijing: China Machine Press，2013.

[3]GB/T 12363—2005，锻件功能分类[S].

GB/T 12363—2005，Classification of forging functions [S].

[4]柯静梅. 提高锻模寿命的方法和措施 [J].装备维修技术，2004，（3）：33-35.

Ke J M. Methods and measures to improve the life of forging die[J].Equipment Maintenance Technology，2004，（3）：33-35.

[5]陈路. 新编锻压精密技术实用手册[M].北京:北京科海电子出版社，2003.

Chen L. A New Practical Manual for Forging and Pressing Precision Technology [M]. Beijing: Beijing Kehai Electronic Publishing House，2003.

[6]吕炎. 锻模设计手册[M].北京:机械工业出版社, 2006.

Lyu Y. Die Design Manual [M]. Beijing: China Machine Press, 2006.

[7]吕炎. 锻造工艺学[M].北京:机械工业出版社, 1995.

Lyu Y. Forging Technology [M]. Beijing: China Machine Press, 1995.

[8]詹辉，苟建华. 高档客车转向节锻件模锻工艺开发[J]. 机械工人/热加工，2004，（12）：17-19.

Zhang H, Gou J H. Development of die forging technology for highgrade steering knuckle forgings for passenger cars [J]. Mechanic/Hot Working，2004，（12）：17-19.

[9]徐皓，刘铭，刘江. 基于Deform的依维柯汽车转向节的预锻优化[J]. 锻压技术，2020，45（1）：30-34.

Xu H, Liu M, Liu J. Pre-forging optimization of steering knuckle for IVEVO automobile [J]. Forging ＆ Stamping Technology，2020，45（1）：30-34.

[10]徐皓，刘江. CH1018转向节锤锻模具优化设计实例[J]. 锻压技术，2020，45（8）：179-183.

Xu H, Liu J. Example of optimal design of steering knuckle hammer forging die of CH1018 [J]. Forging ＆ Stamping Technology，2000，45(8)：179-183.

[11]苟建华. 汽车884N转向节模锻工艺开发[J]. 机械工人/热加工，2004，（7）：66-67.

Gou J H. Automobile 884N steering knuckle die forging process development [J]. Mechanic/Hot Working，2004，（7）：66-67.

[12]吕炎. 锻件缺陷分析与对策[M].北京:机械工业出版社, 1999.

Lyu Y. Analysis and Countermeasures of Forging Defects [M]. Beijing: China Machine Press, 1999.

[13]徐皓，刘江，林雪冬，等. 6061铝合金汽车转向节的预锻优化设计应用研究[J]. 轻合金加工技术，2020，（5）：41-44.

Xu H, Liu J，Lin X D，et al. Research on pre-forging optimization design of 6061 aluminum alloy steering knuckle[J]. Light Alloy Fabrication Technology，2020，（5）：41-44.

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