Transactions of Materials and Heat Treatment

Title：Structural optimization on automobile steering knuckle mold based on orthogonal test and response surface method

Authors： Hu Zuoxiu Liu Shumei Mao Xinran

Unit： Shanghai University of Engineering Science

KeyWords： steering knuckle orthogonal test response surface method stepping angle defect resistance wall

ClassificationCode：TG316

year,vol(issue):pagenumber：2022,47(8):178-184

Abstract：

For the automobile steering knuckle, the hot forging was simulated numerically by finite element software Deform-3D, and the stepping angle defect of steering knuckle at the long fork was found by analyzing the metal filling effect, Then, in view of this defect, the resistance wall structure was designed, and the significant structural factors affecting pre-forging load and flash length of steering knuckle were screened out by the orthogonal test, namely, slope of resistance wall D, clearance of resistance wall C and width of resistance wall G. Furthermore, it was determined that the width of bridge side was 15 mm, the height of resistance wall was 25 mm and the fillet radius of resistance wall was 15 mm, and the quadratic response surface model for clearance of resistance wall C, slope of resistance wall D, width of resistance wall G and pre-forging load Z1 and flash length Z2 was established by the response surface method to obtain the optimal resistance wall parameter combination with the resistance wall clearance of 2.5 mm, the resistance wall slope of 13°and the resistance wall width of 44 mm. The actual production results show that the structural design of resistance wall is reasonable, and the forgings are filled completely without stepping angle defect.

Funds：

作者简介：胡祚庥（1995-），男，硕士，E-mail：15320505446@163.com；通信作者：刘淑梅（1968-），女，硕士，副教授，E-mail：1814618623@qq.com

Reference：

[1]成林, 张文明,隋美丽.热锻参数对汽车转向节力学性能的影响分析[J].热加工工艺,2018,47(9):148-151.

Cheng L, Zhang W M, Sui M L. Effect of hot forging parameters on mechanical properties of automobile steering knuckle [J]. Hot Working Technology,2018,47(9):148-151.

[2]刘琥珀, 黄昌文,吴玉国,等.转向节预锻下模热锻过程中的磨损研究[J].安徽工业大学学报：自然科学版,2019,36(3):244-249.

Liu H P, Huang C W, Wu Y G, et al. Research on wear of pre-forged lower die of steering knuckle during hot forging [J]. Journal of Anhui University of Technology：Natural Science,2019,36(3):244-249.

[3]GB/T 12363—2021,锻件功能分类[S].

GB/T 12363—2021, Classification of forging functions[S].

[4]刘雅辉, 刘淑梅,何文涛,等.阻力墙设计对转向节模锻成形工艺的影响[J].塑性工程学报,2015,22(3):44-48.

Liu Y H, Liu S M, He W T, et al. Effect of resistance wall design on the drop forging for steering knuckle[J]. Journal of Plastic Engineering,2015,22(3):44-48.

[5]徐皓, 刘江.长城2020转向节锻模设计及其锻造工艺生产验证[J].锻压技术,2021,46(1):24-28.

Xu H, Liu J. Forging die design of Great Wall 2020 steering knuckle and production verification of its forging process [J]. Forging & Stamping Technology, 2021,46(1):24-28.

[6]吴元徽. 浅析非调质钢的应用前景[J].机械制造,2009,47(9):66-67.

Wu Y H. Analysis on application prospect of non-quenched and tempered steel[J]. Machinery,2009,47(9):66-67.

[7]郝震宇, 胡芳忠,汪开忠,等.曲轴用非调质钢38MnVS失效分析[J].冶金动力,2021, (3):103-106.

Hao Z Y, Hu F Z, Wang K Z, et al. Failure analysis of 38MnVS non-quenched non-tempered steel for crankshaft [J]. Metallurgical Power,2021, (3):103-106.

[8]赵毅, 刘淑梅,何文涛,等.基于正交试验的转向节热模锻工艺参数优化[J].上海工程技术大学学报,2016,30(2):117-121.

Zhao Y, Liu S M, He W T, et al. Optimization of process parameters in steering knuckle forging based on orthogonal tset [J]. Journal of Shanghai University of Engineering Science,2016,30(2):117-121.

[9]付翔. 汽车转向节的锻造工艺[J].锻压装备与制造技术,2012,47(1):58-62.

Fu X, Forging process of truck knuckle[J]. China Metal Forming Equipment & Manufacturing Technology,2012,47(1):58-62.

[10]中国机械工程学会塑性工程学会.锻压手册[M].北京:机械工业出版社,2008.

Plastic Engineering Society of Chinese Mechanical Engineering Society. Forging Manual [M]. Beijing: China Machine Press,2008.

[11]何文涛. 汽车转向节热锻成形数值模拟及模具优化[D].上海：上海工程技术大学,2016.

He W T. The Numerical Simulation of Hot Forging and Die Optimization for Automobile Steering Knuckle [D]. Shanghai：Shanghai University of Engineering Science,2016.

[12]高冲, 刘淑梅,霍文军.基于响应面法的铝合金连杆锻造工艺优化[J].热加工工艺,2020,49(11):97-100.

Gao C, Liu S M, Huo W J. Optimization of forging process of aluminum alloy connecting rod based on response surface method [J]. Hot Working Technology,2020,49(11):97-100.

Service：

【This site has not yet opened Download Service】【Add Favorite】