With the continuous development of the theory of hydromagnetics and its application in metallurgy, more and more diversified electromagnetic field are imposing in traditional foundry to improve the quality of casting metal. 随着磁流体力学理论在冶金工业中的应用和不断发展,在传统铸造过程中越来越多的利用各种形式的电磁场来改善铸坯的质量。