Analysis of coupled thermal-mechanical mechanism based on work hardening phenomenon in high-speed cold roll-beating

摘要

Aiming to improve the quality of part surfaces in cold roll-beating, the movement of the roller during the process was analysed. The relationships between the relative positions of the roller and the workpiece were determined. A finite element model was established for cold roll-beating simulation, which was based on the thermal effects under different roller speeds. Based on the simulation results, the change in equivalent stress resulting from the thermal-mechanical mechanism was analysed, and its influence on work hardening was determined. The theoretical basis for the control of the influence of coupled thermal-mechanical mechanism on work hardening was derived to ensure high-quality part surfaces during cold roll-beating.