Abstract

In the arc furnace of a direct current there is an electromagnetic hashing of liquid metal at the expense of the volume electromagnetic forces arising at interaction of the current proceeding on a bathtub from an arch spot to a bottom electrode with own magnetic field. For the arc furnace of a direct current with an ax symmetric arrangement of a bottom electrode expressions for determination of power and kinetic energy of fusion at electrovortex hashing are received. As a result of the mathematical analysis and computer modeling the major factors influencing the power and kinetic energy of electrovortex currents are revealed. It is established that the power of the electrovortex currents defining hashing of metal in a bathtub of the arc furnace is proportional to the fusion density, a cube of current of an arch and distance between a spot of an arch and a bottom electrode. Besides, power is defined by their intensity which depends on the sizes and a configuration of a bottom electrode and a spot of an arch.

Keywords

Arc furnace of a direct current, electrovortex currents, volume electromagnetic force, fusion hashing, arch current, mathematical model, bottom electrode.