Simulation of bar rolling in gleeble

Abstract

Simulation of bar rolling was attempted in Gleeble 3500. Entire bar rolling was simulated, i.e., roughening rolling at higher temperature and finishing rolling at lower temperature. Torsion module was used to simulate the large amount of deformation employed in bar rolling. The equivalent strains and strain rates appropriate for torsion deformation in Gleeble were calculated as per standard industrial schedule, from roughening rolling to finishing rolling. The cooling schedules between the roughening rolling and finishing rolling and afterwards was also maintained as per industrial conditions. An induction hardenable grade of steel was selected to evaluate the possibility of simulating bar rolling in Gleeble. The torsion-torque response of the Gleeble simulation indicates whether dynamic restoration processes are active during the deformation steps. The microstructure and hardness of the Gleeble simulated samples were compared with the industrially hot-rolled bar.