Research of Force and Fluid during Horizontal Continuous Casting of QSn6.5-0.1 Strip by Imposing Double Traveling Electromagnetic Field

In order to improve the quality of horizontal continuous casting QSn6.5-0.1 slab, the traveling magnetic field stirrer is imposed, and the experimental and numerical simulation studies are done, the results show that:1) Grain of cast billet can be refined by imposing traveling electromagnetic field which can reduced tensile strength and increased elongation of cast strip, so remarkably improve the plastic deformation ability and decrease cracks of cast strip. 2) the current intensity of the traveling magnetic field is proportional to the flow velocity and electromagnetic force, the greater the current intensity is, the greater the electromagnetic force and flow velocity. Current frequency is non-linear change with the electromagnetic force and flow velocity, when the current frequency is about 30Hz, the electromagnetic force and flow velocity of the molten metal is the biggest. 3) when the current frequency of the traveling magnetic field is greater, it can form many small circulation flows which is more conducive to improve the temperature uniformity of the metal melt and increase equiaxed grains rate of the slab. So, the greater current frequency and current intensity should be chosen to improve the flow pattern and flow velocity. 4) the current direction in the two traveling magnetic field stirrers should be opposite in order to avoid the interactions of the two stirrers. The numerical simulation results can provide the guide for the following experiments.