Effect of Non-Uniform Temperature Field on Piece Rolled by Three-Roll Cross Wedge Rolling
Defects of pieces rolled by cross wedge rolling (CWR) have great effect on its practical applications. With reference to the center-pressure method used often in the forging, the effects of non-uniform temperature field on defects were studied by using the three-roll CWR tests under different cooling conditions and the coupled thermo-mechanical finite element models. The porous can be reduced or even eliminated when the billets were rolled with a controlled non-uniform temperature filed. The optimal temperature gradient was determined by FEM, which can be used in practical applications.
Kai Cheng, Yongxian Liu, Xipeng Xu and Hualong Xie
P. Qiu et al., "Effect of Non-Uniform Temperature Field on Piece Rolled by Three-Roll Cross Wedge Rolling", Applied Mechanics and Materials, Vols. 16-19, pp. 456-461, 2009