超薄板坯水平连铸电磁搅拌的模拟实验  

Physical Simulation on Electromagnetic Stirring in Horizontal Continuous Casting of Thin Slab

作　　者：李伟轩[1] 李秋玲[1] 邓康[1] 任忠鸣[1] 钟云波[1] 

机构地区：[1]上海大学材料学院,上海200072

出　　处：《过程工程学报》2006年第z1期47-52,共6页The Chinese Journal of Process Engineering

基　　金：国家863高科技计划"大规模集成电路"重大专项子课题资助项目(编号:2002AA3Z1410)

摘　　要：为解决超薄薄板坯(厚度10～20mm)水平连铸生产中常见铸坯宏观偏析、疏松和夹杂等凝固缺陷问题,进行了基于静磁场和直流电场耦合作用的薄板坯水平连铸结晶器电磁搅拌模拟实验.结果表明,采用静磁场和直流电场耦合的方式,可使薄板坯水平连铸结晶器中液态金属形成强烈的电磁搅拌.探讨了该电磁搅拌的磁场设置与电流分布,搅拌金属的流态和流速,及其与输入电流的关系等,为工业试验和优化连铸工艺建立了基础.There are many defects in the horizontal continuous casting of thin slab(the thickness is about 10～20 mm),such as macro-segregation,shrinkage porosity and inclusion,etc.,which take effect on the quality of the production.In order to resolve the previous defects in the solidification,and optimize the casting technique,mould electromagnetic stirring(MEMS) can be applied to the casting processes.In this research,based on the physical simulation experiment,in which the molten copper is displaced by mercury,on the electromagnetic stirring in the horizontal continuous casting,the distribution of magnetic field and electric current in the mould,the flow behavior and the velocity of the mercury to be stirred and,the relations of stirring velocity of the mercury with the input current are presented experimentally.A new MEMS method with stable magnetic field and direct current can be presented.The result of the physical simulation shows that the molten metal in the mould of horizontal continuous casting can be stirred linearly with the input current rising.These construct the basis of the optimization and the application of the casting technique with MEMS in horizontal continuous casting of thin slab.

关 键 词：薄板坯 水平连铸 结晶器 电磁搅拌 物理模拟 

分 类 号：TF811[冶金工程—有色金属冶金]