Effects of heating process on the textures and properties of deep drawing steel sheets produced by CSP process

With cold-rolled strips(SPCD) under Baotou CSP line as experimental materials, two batch annealing processes, double-step annealing and single-step annealing, were applied by laboratory experiments.The characters of textures, microstructures and properties were studied under different annealing processes.The results indicate that the double-step annealing process enhances the intensity of γ-fiber and the {111}〈110〉 of α-fiber, but the value of Δr increases, too.The difference of pre-recovery between the two annealing processes delays nucleation in the unfavorable regions, consequently leading to the difference of favorable textures.Upon the double-step annealing process, the high intensity of {110}〈110〉 results in the higher value of Δr.