Abstract:
The production of high grade unoriented electrical steel usually requires constant treatment of hot rolled plates before cold rolling to improve the microstructure and texture of hot rolled steel plates, avoid tile ridge defects and improve the magnetic performance of the final finished plate.The influence of normalizing process on the evolution of the high label unoriented electrical steel was discussed, and the effects of different holding time on microstructure and texture of hot rolled steel were compared at 1000 ℃normalizing temperature.The results show that the recrystallization behavior occurs, the microstructure is more uniform and the average grain size increases after normalizing treatment.Increasing the holding time at the same normalizing temperature is beneficial to increase the grain size of hot rolled sheet.The normalizing treatment weakens the unfavorable texture components and strengthens the 110< 001> texture, which is beneficial to the magnetic properties of the hot rolled sheet, thus enhancing the magnetic properties of the hot rolled sheet.