高效电机用无取向硅钢退火板组织和析出物研究  

Research on Microstructure and Precipitates of Non-oriented Silicon Steel Sheets After Annealing for High-efficiency Motor

作　　者：李永超[1,2] 李娜[1,2] 岳尔斌[2] 项利[2] 张延玲[1] 仇圣桃[2] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]钢铁研究总院连铸技术国家工程研究中心,北京100081

出　　处：《钢铁钒钛》2011年第4期71-75,共5页Iron Steel Vanadium Titanium

基　　金：国家"十一五"科技支撑计划项目(2006BAE03A14)

摘　　要：研究了组织和析出物对高效电机用无取向硅钢退火板磁性能的影响。结果表明:随着退火温度升高,退火板平均晶粒尺寸增加,P15/50明显降低,B50略有升高。退火温度在1 000℃时,退火板的综合性能较好。析出物主要是AlN、(MnS+AlN)和(MnS+Al2O3)复合析出物,尺寸较粗大,主要集中在1.0～2.5μm,还发现少量百纳米以下的细小AlN和TiN。实验室模拟TSCR流程试制的高效电机用无取向硅钢,铁损平均值小于4.00 W/kg,磁感应强度大于1.75 T,适合作中小型高效电机铁芯材料。Effects of microstructure and precipitation on magnetic property of non-oriented silicon steel sheets after annealing for high-efficiency motor are studied in the paper by experiments.The annealed sheet exhibits a larger average grain size,obviously decreasing iron loss and slightly raising magnetic induction with increasing temperature.The annealed sheet has better comprehensive properties at a annealing temperature of 1 000 ℃.The main precipitates are compounds of AlN、（MnS＋AlN）and（MnS＋Al2O3） with coarse size of 1.0~2.5 μm.Besides,a few fine AlN and TiN with size below 100 nm are found.Iron loss of electrical steel simulated by TSCR process in laboratory is 4.00 W/kg and magnetic induction is more than 1.75 T.It is suitable for producing iron cores for small and medium sized high-efficiency motors.

关 键 词：无取向硅钢 高效电机 析出物 铁损 磁感应强度 

分 类 号：TG142.1[一般工业技术—材料科学与工程]