Ovality study of shafts with light area reduction by cross wedge rolling

The ovality of shafts with light area reduction by cross wedge rolling was simulated by finite element software. The influence of technological parameters on the ovality of rolled pieces was studied by the orthogonal regression of the numerical results. Results show that the influences of stretching angle and area reduction on the ovality of rolled pieces are significant, and the ovality of rolled pieces increases with the stretching angle increasing or the area reduction decreasing. However, the forming angle has little influence on the ovality of rolled pieces. The reasons for these influences were explained. Finally the reliability of the numerical results was verified by roiling experiments.