Research on Variation Law of Rolling Force of Three-Roll Skew Rolling Hollow Axle

Abstract

In the research of part forming, forming force is one of the most concerned factors. To explore the variation law of rolling force in the process of three-roll skew rolling (TRSR) hollow axle, the process of TRSR hollow axle is tested and simulated in this paper. First, the working principle of TRSR hollow axle is described; Second, taking the hollow axle of LZ50 steel as the research object, according to the actual performance of TRSR mill, the blank and rolling process parameters are selected, and the finite element model is established; Third, combined experiment and numerical simulation, the evolution laws of the rolling force are obtained by exploring the forming process of TRSR hollow axles; Fourth, the evaluation standard of rolling force is determined on the basis of the evolution law of rolling force, combined with the typical process parameters, and the orthogonal test was carried out. The results show that the simulated evolution law of rolling force is basically consistent with the experimental result. The evolution curve is opposite to the surface shape of the rolled piece. Besides, the rolling force increases gradually with time. Through orthogonal test, the influence subsequence of process parameters on rolling force and relationship between them are determined. In addition, the quantitative relationship between process parameters and rolling force is established.