Transactions of Materials and Heat Treatment

Title：Research on wear failure for pre-forging die of piston

Authors： Wang Yao1 Gu Xiaoyan2

Unit： 1.Department of Material Engineering Shanxi Institute of Mechanical and Electrical Engineering 2.School of Materials and Engineering Jiangsu University of Science and Technology

KeyWords： alloy steel valve body multi-directional die forging temperature distribution forming load CAE analysis

ClassificationCode：

year,vol(issue):pagenumber：2022,47(3):28-33

Abstract：

For the problems of low production efficiency, low material utilization, poor performance and short service life of 40Cr alloy steel valve body, a multi-directional die forging process was proposed to form the valve body. Firstly, three forming process schemes were designed according to the structural characteristics of the valve body, and the loading modes of punch for each scheme were analyzed. Secondly, the finite element model of each scheme was completed by CAE analysis software Deform-3D, and the numerical simulation was carried out. Furthermore, the forging process, forging quality, forging temperature distribution and forming load of each scheme were analyzed and compared. The results show that the forging process of scheme 3 is more reasonable, the temperature distribution is more uniform, the load is smaller， and the forging quality is better. Finally, taking scheme 3 as a reference, the multi-directional die forging process test was carried out, and the valve body forgings with good quality were obtained. After inspection, the consistency with the simulation results is high, which shows that the finite element technology can provide some theoretical guidance for the actual die forging process and improve the design efficiency.

Funds：

江苏省自然科学基金资助项目（BK20140509）

作者简介：王耀（1984-），男，硕士，讲师 E-mail：wangyao841025@163.com

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