应用三维刚塑性有限元DEFORM-3D软件对等内径空心轴类零件的楔横轧成形进行了热力耦合数值模拟,分析了轧制过程中轧件内部的应力、应变场及温度场分布规律,揭示了轧件变形过程中横截面椭圆化和轧件外表面轴肩部分产生隆起以及内表面在靠近台阶处产生凹陷的原因,阐述了轧件在轧制过程中温度的变化及变化的原因.模拟结果表明,用楔横轧工艺轧制等内径空心轴是完全可行的. The three-dimensional rigid-plastic FEM DEFORM-3D software was used to simulate the wedge cross-rolling of the hollow shaft with equal inner diameter. The stress and strain field and the distribution of temperature field during the rolling process were analyzed. The reason of the ovalization of the cross section and the shoulder of the outer surface of the rolling stock during the deformation of the rolling stock and the depression of the inner surface near the step is described and the reason of the change of the temperature and the change of the rolling stock during the rolling is described. The results show that the use of cross-wedge rolling process such as hollow shaft diameter is entirely feasible.