Abstract: 3-D elasto-plastic finite element method is adopted to simulate the process of cross wedge rolling, the relative de- formation rule in the axial direction of workpiece is analyzed. On the base of comparing the relative deformation degree under the different rolling conditions, the influence of process pa- rameters on the axial stretching of workpiece is obtained. This result plays a guiding role on selecting appropriate parameters of the tools and avoiding the formation defects, guaranteeing the quality of parts.

Key words: Axial deformation, Cross wedge rolling, Finite element, Simulation