Abstract: The effects of normalizing treatment on microstructure, texture evolution and magnetic properties of  3.0 % Si non-oriented silicon steel after hot rolling were investigated in laboratory. The results showed that the microstructure of the hot rolled plate was completely recrystallized after normalizing at  900 ℃ , and the average grain size increased with the normalizing temperature rising to  1 000 ℃ . The average grain size was  222 μm , and the microstructure uniformity was obviously improved. When the normalizing temperature increased from  900 ℃  to  1 000 ℃ , the magnetic induction  B50 increased from 1.661 T to 1.674 T. Low frequency iron loss  P1.5/50 decreased from 2.323 W/kg to 2.282 W/kg, and high frequency iron loss P1.0/400 decreased from 18.37 W/kg to 17.45 W/kg.

Key words: non-oriented silicon steel, temperature of normalization, microstructure, texture, magnetic properties