Cold ring roll process is an advanced plastic processing technology. The
feed velocity of mandrel is one of the important
parameters in the process. In this paper, a commercial finite element (FE) software ABAQUS is used to simulate the 3D-deformation with different feed velocities in
cold ring roll process, and Alalloy rings with rectangular cross-sections are adopted as workpieces. By changing the
feed velocity, the graphs of roll force, roll torque and side spread changing with the velocity are obtained and the relation between bite condition and feed velocity is also analyzed. The total depress amounts of the processes with different feed velocities is identical. It is found that when the feed velocity is relatively low, the fishtail shape coefficient is reduced remarkably with the increase of the feed velocity, while when the feed velocity is relatively high, the fishtail shape coefficient changes scarcely with the velocity; the feed velocity affects the fishtail shape coefficient by the influence that the feed velocity have on the outer layer metal of the ring. The results also predict that the roll force and the roll torque increase with the increase of the feed velocity. In addition, the increase of feed velocity has the disadvantage of the ring biting into the roll gap.