Thermomechanical coupled numerical simulation on cross wedge rolling of hollow shaft parts with equal inner diameter

The cross wedge rolling deformation process of hollow shafts with equal inner diameter was simulated with the three-dimension finite element software DEFORM-3D by using a thermomechanical coupled rigid-plastic finite element method.The distributions of stress,strain and temperature fields inside the rolled-piece during the rolling process were analyzed.The reasons for cross-section ovalization in the rolled piece,shaft shoulder apophysis on the outside surface and depression on the inside surface around the sidestep were revealed.The change in temperature of the rolled piece in the rolling process was illustrated and the reason for the change was explained.Simulation results indicate that it is feasible to produce hollow shaft parts with equal inner diameter by cross wedge rolling.