关键词: 高牌号硅钢, 动态再结晶, 变形温度, 变形量

Abstract: In order to further decrease the manufacturing costs of high grade non-oriented silicon steel, through optimizing process of hot deforming, dynamic crystal was promoted, low-cost high grade non-oriented producing by the method of no-normalizing**one-step cold rolledr，would be one possibility. Based on silicon steel of 2. 5% ( Si + Al) ,as close as possible to the actual production situation, the process were simulated by Gleeble-1500D thermal simulation test machine, with constant strain rate 0. 1s^-1 and the heating temperature of 1100 ~ 1200 ℃,the thermal deformation temperature of 900 ~ 1050 ℃ X.,deformation amount of 20% ~ 65% . Through the observation of microstructure,the results showed that,The higher thermal deformation temperature and the larger the deformation amount, the more conducive to the occurrence of dynamic recrystallization. But the heating temperature (≤1200℃ )had no significant effect on the dynamic recrystallization

Key words: High Grade Silicon Steel, Dynamic Recrystallization, Deformation Temperature, Deformation Amount ,