Control of the metal crystallization process by the modulated traveling magnetic field

The influence of a modulated traveling magnetic field on the process of crystallization of a liquid conducting medium is experimentally investigated. The crystallization process is carried out in a vertical cell with a constant temperature difference between the narrow walls of the layer. A traveling magnetic field produced by a linear inductor generates a vortex flow in the medium. This flow leads to redistribution of temperature and change in the position of the crystallization front. Low-frequency modulation of the traveling field leads to generation of significantly pulsating flow. This has a positive effect on the stirring efficiency of the medium. In addition, the flow smoothes the crystallization front, reducing the speed of its movement. (paper)