Numerical Simulation of Effect of Steel on Electromagnetic Characteristics of Soft-contact Mold
钢液对软接触结晶器内三维电磁特性影响的数值模拟

A three-dimensional mathematic mold for electromagnetic field of soft-contact mold and the related finite element program verified by experimental data have been developed to study the relationship between three-dimensional electromagnetic characteristics and the steel in soft-contact mold. The results from numerical simulation show that the electromagnetic characteristics of soft-contact mold has close correlativity with the existence of charge and is sensitive with the fluctuation of meniscus level, the effect of coil position on electromagnetic characteristics lies on the existence of steel, high frequency electromagnetic field is propitious to the confinement of meniscus and weakens the stirring intensity of interior steel, the optimal frequency is 20 kHz or higher, the magnetic field mainly concentrates in the range of 10 mm thickness from outer surface of billet.