Two Dimension Finite Element Simulations on the Electromagnetic Containment in Twin-Roll Strip Casting

摘要

Distribution of magnetic field and electromagnetic force in twin-roll casting of steels was studied by the method of numerical simulation in this paper. Two-dimension finite element model, which includes the regions of melt, stainless collar, coil and magnetic core, has been constructed. By solving magnetic vector potential formulations of quasi-static electromagnetic field, distribution of magnetic flux density and magnetic force at different molten height is determined. Calculated results showed that intensity of the distribution of magnetic flux density increased linearly with the increased coil current; and the magnetic force in the melt increased as a quadratic cure with creased coil current. More attention was given to the distribution of eddy current and magnetic force in the melt, the confine effect at different molten height was also discussed.