运用磁流体动力学原理，对在稳恒磁场中高速旋转的液态金属凝固时的受力状态进行了理论解析，结果表明在电磁力场、离心力场和重力场共同作用下，旋转液态金属中受到大小周期变化的径向压力和切向分力，后者起电磁搅拌作用，是细化电磁离心凝固组织的根本原因． The theory of magnetohydrodynamics is used to theoretically analyze the stress state of liquid metal solidified in high speed rotating in a steady magnetic field. The results show that under the combined action of electromagnetic force field, centrifugal force field and gravity field, The radial pressure and the tangential component of the cycle of the size and the size, which act as electromagnetic stirring, is the fundamental reason for refining the electromagnetic centrifugal coagulation.