Abstract: The effect of annealing temperature (850 ~950 °C ) and holding time (5 ~ 18 min) on structure and texture of 0. 35 mm sheet by 6 passes cold-rolling from 2.3 mm hot-rolled plate of silicon steel (/% : 0.036C, 3.15Si, 0.21Mn, 0.005P, 0.007S, 0.032Al) has been tested and studied. Results show that the higher the annealing temperature the coarser the average grain size； As annealing at 900 °C for 5 min the average grain size of steel sheet is 41. 39 μm, and the texture in sample is mainly concentrated in γ orientation line {111} ＜112＞; and {111}＜110＞; , as annealing at 900 ℃ for 18 min the average grain size is 48. 08μm ，and the {112} and {111} surface texture density reduce significantly while {001} surface texture enhances, it has better magnetic performance.

摘要： 试验研究了退火温度（850~950℃）和时间（5~18 min）对2.3 mm热轧硅钢板（/%:0.036C,3.15Si,0.21Mn,0.005P,0.007S,0.032Al）6道次轧制的0.35 mm冷轧板组织和织构的影响。结果表明,退火温度越高,晶粒平均尺寸越大,900℃5 min退火时平均晶粒尺寸41.39μm,试样织构主要集中在γ取向线上的{111}＜112＞;织构组分和{111}＜110＞;织构组分;900℃18 min退火时平均晶粒尺寸为48.08μm,试样的{111}面织构和{112}面织构密度都明显减弱,{001}面织构增强,磁性能较优。

关键词: 3. 15%Si无取向硅钢, 0.35 mm冷轧板 , 退火, 晶粒尺寸, 织构