锻压技术

摩擦对行星轧制过程中轧件扭转的影响

英文标题：Friction effect on torsion in planetary rolling process of copper tube

作者：曾庆龄臧勇车延明朱旭

关键词：摩擦铜管行星轧制有限元分析扭转

分类号：TG339

出版年,卷(期):页码：2012,37(6):38-42

摘要：

三辊行星轧制过程中摩擦状况较为复杂，其对轧制过程的影响也较为复杂。采用有限元软件ABAQUS建立了具有轧辊公转的铜管三辊行星轧制过程的三维热力耦合有限元模型，在该仿真模型中，根据轧辊各段的摩擦状况，将轧辊分成3个区域，分别研究了各变形区域内摩擦系数对行星轧制过程中轧制速度和扭转情况的影响。研究结果表明：随着区域1以及区域2处摩擦系数的增大，轧件出口轴向速度和轧件出入口角速度差均有所增加，区域3处摩擦系数的影响规律则与之相反；适当增大区域1和区域3处的摩擦系数，可以减小轧制过程中的扭转，而区域2处的摩擦状况对轧制扭转的影响较小。

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.

基金项目：

广东省教育部产学研合作项目（2007B090400122）

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