The study addresses the modeling of the characteristics of electric and magnetic fields generated simultaneously through conduction, by directly passing current through the melt using electrode current leads, and induction, using an external inductor positioned above the surface of the melt. This hybrid method of energy treatment for a liquid metal system implements a complex superposition of electromagnetic fields, which determines the parameters of the thermal-force impact on the treated object. The functional capabilities of this method were analyzed through numerical experiments using simulation modeling. The obtained results demonstrated potential treatment modes capable of actively enhancing the incubation processes of crystallization, which ultimately allows one to find conditions for improving the structure and properties of the cast metal. Thus, the combination of simultaneous conduction and induced current treatment modes consistently led to a stronger impact on the liquid metal system compared to applying them separately. It was found that the genesis of the electromagnetic field superposition is mainly concentrated within the skin layer near the melt surface. The time characteristics of the electric and magnetic fields become nonlinear, which amplifies energy fluctuations within the system. At the same time, the amplitude values of the combined electromagnetic field characteristics increase by almost an order of magnitude, significantly enhancing the integral amplitude of the force impact on the melt. Thus, the simulation modeling results confirmed the innovative potential of the hybrid method of treating the melt simultaneously with conduction and induced currents for foundry applications.
Иванов et al. (Sun,) studied this question.
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