Transactions of Materials and Heat Treatment

Title：Friction effect on torsion in planetary rolling process of copper tube

Authors： ZENG Qing-ling1 ZANG Yong1 CHE Yan-ming2 ZHU Xu2

Unit： 1. School of Mechanical Engineering University of Science and Technology Beijing Beijing 100083 China 2.Guangdong Tube & Rod Technology Co. Ltd. Foshan 528312 China

KeyWords： friction copper tube planetary rolling finite element analysis torsion

ClassificationCode：TG339

year,vol(issue):pagenumber：2012,37(6):38-42

Abstract：

The friction condition is complicated in three-roll planetary rolling process, and the effect of that on the rolling process is also complex. A three-dimensional thermal-mechanical coupling finite element model of three-roll planetary rolling process of copper tube with roll revolution was established by the finite element software ABAQUS. In the simulation model, according to the friction condition of each segment of the roll, the roll was divided into three zones. Respectively, the effect of friction coefficient in each deformation zone on the rolling speed and torsion in the planetary rolling process was investigated. The results indicate that the exit axial speed and the angular velocity difference between rolling entrance and exit have increased with the increase of the friction coefficient in zone 1 and zone 2, but the law in zone 3 is opposite, the torsion condition in rolling precess would be reduced by appropriate increase of the friction in zone 1 and zone 3, but in zone 2， the friction condition has less effect on the torsion of rolled piece.

Funds：

广东省教育部产学研合作项目（2007B090400122）

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