Simulation research on effect of blooming temperature on radial-axial rolling forming of ring

Abstract

The simulation model of radial-axial rolling process of GCr15 ring was established based on Deform software. The rolling process of ring at different blooming temperatures was simulated, and the change of temperature and temperature distribution uniformity of ring were obtained, which were analyzed and processed as the basis for subsequent research. Taking points uniformly on the surface of ring obtained by rolling simulation at different blooming temperatures, so as to obtain the accuracy and uniformity of the overall dimension of ring. The change of grain size and its distribution uniformity were analyzed. The change law of equivalent plastic strain and its distribution uniformity of ring were studied. The surface uniformity, average grain size, grain size distribution uniformity and equivalent plastic strain distribution uniformity of ring were taken as the quality indexes. All quality indexes were normalized and weighted and the optimum blooming temperature of ring is 1100℃.