Effect of Initial Rolling Temperature on Radial-axial Rolling Process of Ti2AlNb Titanium Alloy Ring

Based on Simufact Forming finite element software, the radial-axial rolling process of Ti2AlNb titanium alloy ring was simulated numerically. The effects of different initial rolling temperatures on the force and energy parameters of driving roller radial rolling and the equivalent strain and temperature of the ring after forming were studied. The results show that with the increase of the forming temperature of the ring, the distribution of the equivalent strain standard deviation is more and more uniform in the axial section of the ring, but the difference of the temperature standard deviation distribution is more and more large. At the initial stage of ring rolling, the temperature has a significant effect on the rolling force, and the speed and peak value of the driving roll's rolling force decrease with the increase of ring forming temperature. At the later stage of ring rolling, the temperature has little effect on rolling force.