摘要
对不同成分体系的无取向硅钢进行相同工艺的二次退火试验,研究了不同成分体系的无取向硅钢二次退火后组织和磁性能的演变规律。结果表明,二次退火能进一步增大无取向硅钢的铁素体晶粒尺寸,提升磁性能。二次退火后无取向硅钢磁性能的提升潜力与无取向硅钢的成分体系有关,与成品退火温度无关。其中,高Al成分体系的无取向硅钢二次退火后铁素体晶粒更易长大,平均晶粒尺寸达到159μm,铁损降幅最大,达到了1.14 W/kg,磁性能最优;除此之外,二次退火还能显著提升无取向硅钢在低磁场强度下的磁感应强度,进而提高无取向硅钢在低磁场强度下的磁导率;在电机工作磁感0.5~1.5 T区间内,二次退火后无取向硅钢的磁导率明显高于二次退火前。针对需要二次退火的压缩机电机铁芯,采用高Al成分体系的无取向硅钢有助于提升电机性能。
Evolution of microstructure and magnetic properties of non-oriented silicon steel with different composition systems after secondary annealing by same process was studied.The results show that the ferrite grain size of non-oriented silicon steel is further increased and the magnetic properties are improved after secondary annealing treatment.The potential for improving the magnetic properties of non-oriented silicon steel is related to the composition,and is independent of the annealing temperature of the product.Among these composition systems,the ferrite grains of non-oriented silicon steel with high Al composition system are easier to grow up after secondary annealing treatment,and the magnetic properties is the best.The average grain size can reach 159μm,and the core loss reduction is 1.14 W/kg.Besides,the magnetic induction of non-oriented silicon steel under low magnetizing force is significantly improved after secondary annealing treatment,and then the magnetic conductivity under low magnetizing force is improved.In the range of 0.5-1.5 T of motor working magnetic induction,the magnetic conductivity of non-oriented silicon steel after secondary annealing treatment is significantly higher.The core of the compressor motor is suitable for using non-oriented silicon steel with high Al composition system.
作者
陆佳栋
黄杰
张建雷
岳重祥
Lu Jiadong;Huang Jie;Zhang Jianlei;Yue Chongxiang(Institute of Research of Iron and Steel,Shasteel,Zhangjiagang Jiangsu 215625,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2023年第6期197-202,共6页
Heat Treatment of Metals
关键词
无取向硅钢
二次退火
成分体系
组织
磁感应强度
磁导率
non-oriented silicon steel
secondary annealing
composition system
microstructure
magnetic induction
magnetic conductivity
