常化温度对无取向电工钢50W300热轧板组织、织构和磁性能的影响  

Effect of Normalized Temperature on Microstructure、Texture Transformation and Magnetic Properties of Hot Rolled Plate of Electrical Steel 50W300

作　　者：叶铁[1] 高振宇[2] 卢志文[1] 仲志国[1] 马春华[1] YE Tie;GAO Zhenyu;LU Zhiwen;ZHONG Zhiguo;MA Chunhua(Intelligent Manufacturing Research Institute,Nan yang Normal University,Nanyang 473061;Technology Centre of Ansteel Co Ltd,Anshan 114001)

机构地区：[1]南阳师范学院智能制造研究院,南阳473061 [2]鞍钢股份有限公司技术中心,鞍山114001

出　　处：《特殊钢》2022年第4期82-87,共6页Special Steel

基　　金：国家自然科学基金项目(No.51374132);河南省自然科学基金项目(No.182300410240);河南省教育厅项目(212300410377)。

摘　　要：利用电子背散射(EBSD-electronback-scattingdiffraction)检测分析技术和磁性能测量技术研究高牌号冷轧50W300无取向电工钢2.3mm热轧板低温(820℃)和高温(920℃)常化对其组织、织构和电磁性能的影响。研究发现,920℃2min(45m/min)常化时,电工钢成品的铁损最低,磁感最高。此时,电工钢卷外层晶粒组织发生脱碳并快速生长;次表层晶粒生长较为缓慢,晶粒尺寸较小,且均匀。中心层组织晶粒再结晶时,尺寸均匀。同时织构水平降低,表层织构慢散,次表层和中心层织构近似于冷轧织构,有利于电工钢磁性能的织构比例提高。The microstructure,texture and electromagnetic properties of high-grade cold-rolled 50W300 non oriented electrical steel 2.3 mm hot-rolled plate with normalizing at low temperature(820℃)and high temperature(920℃)are studied by means of EBSD(electron back-scatting diffraction)detection etc analysis and magnetic property measurement technology.It is found that when the normalizing treated process is at 920℃ for 2 min(45 m/min),the iron loss of the finished electrical steel is the lowest and the magnetic induction is the highest.Under such process conditions,the grain structure of the outer layer of the electrical steel coil is rapidly decarburized.The grain growth of the subsurface layer is slow,and the grain is small and uniform.When the center layer structure is recrystallized,they are uniform in size.And the texture level reduces,the surface texture is slow,the texture in sub-surface and the central layer are similar to the coldrolled textures,the texture ratio of the magnetic properties of electrical steel increase.

关 键 词：无取向电工钢 50W300 2.3mm热轧板 常化 组织 织构 磁性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程]