掺稀土无取向硅钢50W470全工艺组织性能分析  

Analysis on Microstructure and Properties of Rare Earth Doped Non-oriented Silicon Steel 50W470 with Complete Process

作　　者：刘朋成 邬宇轩 刘宝志 吴忠旺[3] 孙婷婷[3] Liu Pengcheng;Wu Yuxuan;Liu Baozhi;Wu Zhongwang;Sun Tingting(Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China;Baotou Weifeng Rare Earth Electromagnetic Material Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China;School of Materials and Metallurgy,Inner Mongolia University of Science and Technology,Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]内蒙古包钢钢联股份有限公司技术中心,内蒙古包头014010 [2]包头市威丰稀土电磁材料股份有限公司,内蒙古包头014010 [3]内蒙古科技大学材料和冶金学院,内蒙古包头014010

出　　处：《包钢科技》2025年第2期27-32,48,共7页Science & Technology of Baotou Steel

摘　　要：从夹杂物、析出物、晶粒尺寸和织构等方面认识了添加稀土元素Ce对无取向硅钢50W470组织及磁性能的影响。稀土元素加入后的无取向硅钢铸坯中心等轴晶比例在41%~45%之间,以无尖角的球状和棒状形式存在的稀土夹杂物尺寸约为664 nm。热轧组织在RD-ND面存在较为明显的组织不均匀性,表层以再结晶组织为主并存在少量带状组织;中心以带状组织为主,带状组织间存在部分再结晶晶粒。通过全工艺工业生产的掺稀土无取向硅钢50W470成品磁性能铁损P1.5/50为3.142 W/kg,磁感应强度B50为1.705 T。The effects of adding rare earth element Ce on microstructure and magnetic properties of non-oriented silicon steel 50W470 are studied from such aspects as inclusions,precipitates,grain size and texture.The proportion of central equiaxed crystal in the billet of non-oriented silicon steel after adding rare earth element is 41%~45%,size of rare earth inclusions existed in forms of globularity and rod without sharp corner is about 664 nm.There is obvious inhomogeneity of microstructure on the RD-ND plane of hot rolled microstructure,it is mainly recrystal microstructure with a small amount of banded microstructure on surface layer and mainly banded microstructure in the center as well as there are part of recrystallized grains among banded microstructure.For the finished product of rare earth doped non-oriented silicon steel 50W470 produced with complete process,its magnetic properties,iron loss P1.5/50 is 3.142 W/kg and magnetic induction intensity B50 is 1.705 T.

关 键 词：稀土元素 无取向电工钢 夹杂物 微观组织 磁性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程]