The present research status of the second phase such as MnS

AIN and Cu2S is summarized. The types of the second phase in oriented silicon steel and its selection conditions are introduced. The mechanism of the inhibition of the second phase particles and the effect mechanism of Ostwald coarsening on second phase particles are described. The influence of phase particles on magnetic susceptibility and iron loss of different second relative orientation silicon steels is summarized. It is proposed that the combination of short-flow process and low-solution temperature second phase will be the first choice for producing high-end products.