Effect of Cold-rolling Reduction on Recrystallization of Extra Low-carbon and High Strength Bake-hardening Steel Sheet During Continuous Annealing

Some extra low carbon and high strength bake hardening steel sheets with different cold rolling reduction were annealed continuously.The experimental results show that the continuous annealing recrystallization of the sheets is moved up and shortened with the increase of cold rolling reduction and with the decrease of cold rolled sheet thickness,so the process of grain growth is correspondingly prolonged.This phenomenon is very important to adjust the manufacturing process of commercial sheets with different thickness.