Abstract: Annealing is one of the key processes in heat treatment processes of non-oriented silicon steels. Some processing parameters of annealing, such as heating rate, annealing temperature, holding time, protective atmosphere and cooling rate, can be varied to affect the formation and evolution of non-oriented silicon steels’ microstructure, texture and precipitated phase. Therefore, reasonable annealing process is very important to influence the properties of non-oriented silicon steels. Previous researches on annealing process of non-oriented silicon steels were summarized and analyzed in this paper, concerning the influences of heating rate, annealing temperature and holding time to non-oriented silicon steels’ microstructure, texture and magnetic properties, which were aimed to support references to the manufacturing of high-quality non-oriented silicon steel.

Key words: non-oriented silicon steel, annealing, microstructure, texture, magnetic property