Abstract: The test results  showed that with  increasing normalizing temperature  from  850  ℃ to1100  ℃,the  average grain  size  of 2.5  mm  hot  rolled  plate  of 0.005C-3.0Si  non-oriented  electric  steel  increased  from  60  μm  to  200  μm,and  with normalizing  at  1000  ℃ for hot rolled plate,the  grain  size  of 0.5 mm  cold rolled  sheet  annealed  at  850  ℃+950  ℃  was  maximum  to   105  μm;  with  increasing  normalizing  temperature  of  hot  rolled  plate,the{111},{112}  and{114}tex ture in annealed cold rolled  sheet obviously weakened and the{100|texture was enhanced. The optimum normalizing temperature  of hot rolled plate was  900~1050  ℃,with which the iron loss  of the  electric  steel was lowest.

Key words: 3.0Si Electric Steel,Non-Oriented,Normalizing,Structure,Magnetic Properties

摘要： 当常化温度由850℃提高至1 100℃,0.005%E-3.0%Si无取向电工钢2.5 mm热轧板的平均晶粒尺寸由60μm增至200μm;当热轧板常化温度为1 000℃,0.5 mm冷轧板850℃+950℃退火后的晶粒尺寸最大,为105μm。随热轧板常化温度提高,冷轧板退火后{111}、{112}和{114}织构明显减弱,{100}织构增强,热轧板最佳常化温度为900～1 050℃,该电工钢的铁损最低。

关键词: 3.0%Si电工钢, 无取向, 常化, 组织, 磁性能