Transactions of Materials and Heat Treatment

Title：Method of solving friction coefficient in rack cold rolling-beating

Authors： Li Jiawei Li Yan Yang Mingshun Li Long Cui Limu Chen Xin

Unit： Xi′an University of Technology

KeyWords： cold rolling-beating finite element simulation friction coefficient rolling force pressure angle contact angle

ClassificationCode：TG302

year,vol(issue):pagenumber：2019,44(3):50-58

Abstract：

For the problem of determining the friction coefficient of cold rolling-beating, firstly, the force analysis of the rolling wheel and the blank was carried out, and the mathematical relationships between the friction coefficient and the rolling-beating force, the contact angle and the pressure angle were established. Then, the rolling-beating force was simulated without considering the friction, and the contact angle and pressure angle were inversely determined according to the simulation results. Finally, the friction coefficient between the rolling wheel and the blank was obtained by combining the rolling-beating force gained by actual test. Thus, the friction coefficients of cold rolling-beating under different process parameters were obtained by this method, and the corresponding simulation was conducted by the obtained friction coefficients. In addition, the error of the simulated forming force and experimental forming force was less than 5%, and the friction and wear experiments were verified to demonstrate the effectiveness of this method for determining the coefficient of friction under the same condition.

Funds：

国家自然科学基金资助项目（51475366，51475146）；陕西省科技计划项目（2016JM5074）；西安理工大学博士学位论文创新基金项目（310-252071601）

李嘉伟（1992-），男，硕士研究生,E-mail：m13572575035_1@163.com;通讯作者：李言（1960-），男，博士，教授，博士生导师,E-mail：jyxy-ly@xaut.edu.cn

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