1994 Volume 80 Issue 11 Pages 813-818
A new method for pouring a molten charge out of a levitation type cold crucible has been proposed. In the new method, the charge is taken out through the bottom-hole of the crucible by changing the magnetic field which results in the break-down of the mechanical balance among magnetic pressure, hydrostatic pressure and the pressure due to surface tension. Pouring the charge out of the crucible was demonstrated by changing the distance between the coil and the crucible. A new technique which can fix the shape of the molten charge in the crucible has been proposed. By using this technique, the elongation of the charge shape predicted by the numerical analysis was confirmed and whether the charge contacted with the crucible was examined. In the experiment, the small temperature difference between the molten charges before and after pouring was observed and the large super heat in the poured metal was available.
