Abstract: The effects of hotrolled coiled temperature on microstructure, texture and magnetic properties of 0.9 % Si  nonoriented electrical steels were investigated based on conventional process. The study found that the coiled microstructure at 650 ℃ was mainly characterized by fine deformed grains, causing the fine and heterogeneous recrystallized annealed grains. Nevertheless, coarse and homogeneous coiled microstructures were obtained at 700 ℃ and 750 ℃, resulting in homogeneous microstructure in final annealed sheets. After coiling, the γfiber texture significantly weakened and λfiber texture increased in the final annealed sheets. The magnetic induction significantly improved with the coiling temperature increasing. Compared to that without coiling, the average magnetic induction (B50) increased by 0.013 T when coiling at 750 ℃. It indicated that the coiling temperature was one of the key factors that affect the magnetic properties.

Key words: nonoriented silicon steel, microstructure, texture, magnetic properties