Effect of process parameters on the volume of the stub bar of Rolled Pieceby Cross Wedge Rolling under the different end shapes

Abstract

The forming process of rolling workpieces with different end shapes with cross wedge rolling was simulated by the software Deform-3D. And combined with the principle of blank compensation method, the influence of process parameters on the volume of the stub bar of workpiece with flat end and circular-arc end was analyzed, and the method to effectively control the concavity of rolled piece end surface is brought forward by using circular-arc billet. According to the obtained research results, the volume of stub bar is in direct proportion to the spreading angle, and decreases at first and then increases with the increasing of the forming angle, and increases at first and then decreases with increasing of the area reduction, and increases at first and then keep approximately invariant with increasing of mill length. Finally, the feasibility of using circular-arc billet to reduce the concavity were verified by rolling experiment.