Study on the Influence of Low-Frequency Electromagnetic Field on the Absorption Rate of Al₂O₃ Inclusion in Low Reactivity Mold Flux

With the wide application of electromagnetic stirring in continuous casting and the rapid development of low reactive mold flux, the effect of low-frequency electromagnetic field on the assimilation and absorption rate of Al₂O₃ inclusion in the low reactive mold flux was studied by using the rotating cylinder method, and the relationship between electromagnetic field parameters and the dissolution rate of Al₂O₃ inclusion was also studied. The results show that the low-frequency electromagnetic field can obviously promote the assimilation and absorption of Al₂O₃ inclusion in low reactivity mold flux. When the magnetic field intensity (MFI) is 30 mT and the magnetic field frequency (MFF) is 12 Hz, the maximum dissolution rate of Al₂O₃ inclusion is 2.66 × 10^–4 g mm⁻²min⁻¹, which is 10.64 times higher than in the absence of magnetic field. Furthermore, the higher the MFI and MFF, the faster the dissolution rate of Al₂O₃ inclusion.