Transactions of Materials and Heat Treatment

Title：Cold rolling mechanism on automobile engine pulley

Authors： Ma Houliang1 2 Sun Baoshou1 2 Shu Xuedao1 2 Yuan Jiayao1 2 Xu Zhenwei3

Unit： 1. Faculty of Mechanical Engineering and Mechanics Ningbo University 2. Zhejiang Provincial Key Laboratory of Part Rolling Technology 3. Ningbo Xiongshi Machine Manufacturing Co. Ltd.

KeyWords： engine pulley cold rolling equivalent stress equivalent strain widening defect

ClassificationCode：TG335

year,vol(issue):pagenumber：2022,47(9):145-151

Abstract：

In order to realize the precise forming of cold rolling for engine pulley, a two-pass cold rolling finite element model of engine pulley was established based on Simufact software, the evolution laws of equivalent stress field and equivalent plastic strain field in the cold rolling process of pulley were analyzed, and its deformation mechanism was clarified. Then, according to the finite element simulation of cold rolling for pulley, the cold rolling experiment was carried out. The research shows that during the two-pass cold rolling process of pulley, the contact area between roller and pulley is the main deformation area, the deformation is the most severe, and the equivalent stress and equivalent plastic strain values at the groove are the largest. Properly increasing the time of finishing stage in the second pass of cold rolling for pulley can effectively eliminate the widening defect in the end face of ring. Thus, the automobile engine pulley is formed by two-pass cold rolling process, the cold rolling process is stable, and the ring with small width end face and high dimensional accuracy is obtained, which verifies the correctness of the finite element simulation.

Funds：

国家自然科学基金资助项目（51975301）;浙江省自然科学基金重点资助项目（LZ17E05001）

马后梁(1996-)，男，硕士研究生 E-mail：1349681881@qq.com 通信作者：孙宝寿(1960-），男，硕士，副教授 E-mail：sunbaoshou@nbu.edu.cn

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