Crystal aluminum smelters electromagnetic stirrer

             Working principle

              Crystallization of the principle of electromagnetic stirrer is powerful changes in the magnetic field generated by electric current, penetrating multilayer dielectric barrier, make the continuous casting billet internal flow of molten metal produced, through the control of the flow state to improve slab internal organization, the composition distribution, liquid and purity and surface quality, etc. Due to the role of the electromagnetic field had the characteristics of non-contact, uniform distribution, especially suitable for high temperature and other special occasions. Operating practice indicated that electromagnetic stirring in improving the columnar crystal, bypass, pinhole, increase crystal zone, reduce the composition segregation,to reduce or eliminate center loose and shrinkage cavity, etc. effect is very obvious. Therefore, under the certain process conditions, choose reasonable installation position of the stirrer, appropriate way of stirring intensity and stirring, control the flow of the molten form and flow speed, plays an obvious role in improve the quality of casting billet.

              Continuous casting and electromagnetic stirring device can effectively improve the internal organization structure of casting, improve the quality of the surface, reduce the center segregation and center loose, basic elimination of shrinkage cavity and crack, greatly increase the axis crystal rate, which has been widely used in all kinds of square billet continuous caster. Continuous casting and electromagnetic stirring device is a kind of work in high temperature, high humidity and high dust slag electrical equipment under the bad environment, etc. In order to achieve the necessary electromagnetic thrust, and to minimize the volume of device at the same time, often designed to work in the condition of high current and low frequency.

           Crystallization of electromagnetic stirrer application effect comparison: