电磁半连铸液穴形状随磁场强度的变化规律  

Experimental Investigation on Evolution of Sump Shape with Electromagnetic Intensity on the Process of Semi-Continuous Casting

作　　者：张勤 崔建忠[1] 路贵民[1] 张北江[1] 

机构地区：[1]东北大学材料电磁过程教育部重点实验室,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2002年第6期566-568,共3页Journal of Northeastern University(Natural Science)

基　　金：国家重点基础研究发展规划项目 (G19990 64 90 5 0 1)

摘　　要：对不同强度低频交变电磁场作用下 ,CREM法半连铸 70 75铝合金过程中的液穴 ,即熔体弯液面形状、熔体与结晶器接触高度、初凝壳形成位置点 ,以及液穴深度的变化规律进行了实验研究·结果表明 :随着磁场强度的增大 ,弯液面曲率半径及熔体与结晶器接触高度减小、初凝壳形成位置点降低。In the electromagnetic field with low frequency and different intensity. The surface meniscus, the contact height between melt and mold, the forming position of initial solidified shell and sump height were experimentally investigated on 7075 alloy produced by CREM process. The curvature of surface meniscus and the height of contact height between the melt and mold decrease with the enhancement of electromagnetic field intensity. The sump height decreases accordingly as the forming position of primary solidified shell becomes low.

关 键 词：磁场强度 CREM法 电磁场作用 半连续铸造 铝合金 液穴形状 表面质量 

分 类 号：TG249.7[金属学及工艺—铸造] TG14[一般工业技术—材料科学与工程]