Roll Pass Design and Simulation on Continuous Rolling of Alloy Steel Round Bar

Abstract

Reasonable design of roll pass schedule is the prerequisite for a successful shape rolling process. In this paper three dimensional elastoplastic finite element simulation with thermal mechanically coupled analysis is applied to study the roll pass design of the hot continuous rolling of Ф100mm alloy steel round bar from 200mm×200mm square cast bloom. Due to the larger plastic strain occurring at the corner of the workpiece, the method of bias meshing for the cross section is adopted to fine the elements of surface and corner area. The stress, strain, temperature distribution, rolling force and rolling moment of the hot continuous rolling are simulated to analyze the plastic deformation and the position and cause of possible rolling defects in order to confirm the roll pass design. The simulated results of cross section sizes of rolled steel at the exit of each pass are in good agreement with the measured values.