Effects of electromagnetic stirring on the flow field and level fluctuation in bloom molds

The effects of electromagnetic stirring on the flow field and level fluctuation were researched for 260mm×300mm bloom molds by combining the finite element method with the finite volume method. The simulated magnetic field is consistent with measured data in a real plant. Molten steel swirls in the horizontal section and forms two pairs of recirculation zones with opposite circulation directions in the longitudinal section. When the current and frequency increase, the maximum tangential velocity increases, and the level fluctuation of the free surface aggravates. For 260 mm×300 mm bloom continuous casting of bearing steel, the reasonable current and frequency of mold electromagnetic stirring are 300 A and 3 Hz, respectively.