Transactions of Materials and Heat Treatment

Title：Design and optimization on preforming process for high-capacity diesel engine oil pan

Authors： Yue Fengli1 Zhang Xin1 Chen Dayong2 Xu Yong2 Song Hongwu2 Ma Yan2 Zhang Shihong2 Li Jingming3 Li Yonghui3

Unit： 1. College of Automobile and Transportation Shenyang Ligong University 2. Shi Changxu Advanced Material Innovation Center Institute of Metal Research Chinese Academy of Sciences 3. Henan Mengdian Group

KeyWords： diesel engine oil pan hydro-mechanical deep drawing response surface method orthogonal test method thinning rate thickening rate

ClassificationCode：U464.172

year,vol(issue):pagenumber：2022,47(9):66-74

Abstract：

Due to the appearance features of thin wall, large size and asymmetric deep cavity for the new type large-capacity diesel engine oil pan, the traditional forming process of oil pan is no longer applicable. Therefore, the billet used in final bulging was formed by hydro-mechanical deep drawing process, and the hydro-mechanical deep drawing process was developed into two steps,that is first partial deep drawing, and then overall deep drawing. With the help of finite element simulation software, the calculation model was established, and combined with the response surface method and orthogonal test method, the influences of the crucial process parameters such as die fillet radius, friction factor between blank and punch, friction factor between blank and die, blank holder force and hydraulic pressure on the hydro-mechanical deep drawing for oil pan were investigated. Furthermore, taking the maximum thinning rate and the maximum thickening rate as the optimization goals, the best combination of process parameters was obtained and verified, and a new type of gantry-type preformed part that met the quality requirements was successfully manufactured, and the maximum thinning rate was basically consistent with the simulation results, which verified the correctness of the process plan and the reliability of the simulation.

Funds：

中国科学院青年创新促进会专项（2019195）

岳峰丽（1970-），女，硕士，副教授 E-mail：flyue@163.com 通信作者：陈大勇（1987-），男，博士，助理研究员 E-mail：dychen15b@imr.ac.cn

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