无接触熔炼电磁约束压强计算及熔体外形确定  

Calculation of electromagnetic confinement pressure and the determination of surface shape of melt

作　　者：钟雷[1] 万树德[1] 陈满明[1] 汪海[1] 

机构地区：[1]中国科学技术大学近代物理系,安徽合肥230026

出　　处：《中国科学技术大学学报》2012年第11期871-875,共5页JUSTC

基　　金：国家重点基础研究发展(973)计划(2008CB717800)资助

摘　　要：在对高导电率材料提纯过程中引入无接触电磁约束熔炼技术,可以避免熔体与坩埚接触,有效地阻止坩埚带来的杂质污染.从熔体局部径向压强平衡方程出发,提出电磁约束压强的概念和计算方法,通过模拟计算确定熔体外部形状.使用自制水冷铜坩埚,以铝为原料,在大气条件下实现了无接触电磁约束熔炼实验.结果表明被约束的熔体外部形状与计算结果相符,说明所提出电磁约束压强的计算方法是正确的.Non-contact electromagnetic confinement Melted materials with good conductivity can be kept is applied in purification of high purity materials. non-contact with the crucible, which could effectively avoid the pollution by impurities in the crucible. Based on the local radial pressure equilibrium formulas, the conception of electromagnetic confinement pressure and the method for calculating the pressure were presented. Thus the surface shape of melt could be determinated via simulation. The experiment using aluminum bulk was conducted under atmospheric condition, with the cold copper crucible designed by ourselves. The result of the experiment shows consistency between the shape of melt in experiment and calculation, which verifies the correctness of the calculation of the pressure.

关 键 词：无接触熔炼 电磁约束压强 熔体外形确定 

分 类 号：O441[理学—电磁学]