To improve the shape accuracy of profile in the roll-bending,the springback law Z shaped profile in rollbending is experimentally investigated,the relation between the forming radius of profile and displacement of the side roll is established and the forming parameters for roll-bending is obtained with considering the springback. A3 D model for the roll-bending forming is proposed,and ABAQUS software is employed to analyze the influence of the main roller size,clamp force and friction coefficient on the cur...