小方坯连铸结晶器电磁搅拌工艺参数优化  

Process parameter optimization of mold electromagnetic stirring in billet continuous casting

作　　者：周俐[1,2] 孙维 杨应东 王民章 程志洪[2] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京10083 [2]安徽工业大学冶金与资源学院,安徽马鞍山243002 [3]马鞍山钢股份有限公司第三钢轧总厂,安徽马鞍山243000

出　　处：《炼钢》2011年第3期25-28,共4页Steelmaking

基　　金：国家科技支撑计划项目(2007BAE30B01)

摘　　要：通过不同电磁搅拌参数条件下结晶器内轴向和径向磁感应强度的测定,得到电流为510A、频率为3Hz时结晶器内的磁感应强度值相对较大,结晶器内在径向上的磁感应强度变化较一致,磁场的分布均匀。方坯断面的低倍照片等轴晶测定结果表明,频率为3Hz及电流为510A时,铸坯等轴晶率也最大。By measurement on the magnetic induction intensity in axial and longitudinal direction of mold under the conditions of different electromagnetic stirring parameters it＇s verified that the magnetic induction intensity value in the mold tends to be larger when the electrical current comes up to 510 A and frequency 3 Hz and the variation of magnetic induction intensity in the longitudinal direction of the mold becomes similar and the distribution of the magnetic field is uniform. Results of measurements on the macro photo of the equiaxed crystal in the section of the billet show that the ratio of the equiaxed crystal is highest when frequency comes to 3 Hz and the electrical current 510 A.

关 键 词：结晶器 电磁搅拌 磁感应强度 等轴晶率 

分 类 号：TF777.3[冶金工程—钢铁冶金]