PURPOSE: To improve the melt stickability between a material to be melted and a molten metal with a titled process for producing a steel ingot having different sectional areas in an axial direction by rotating circumferentially a slag bath and the molten metal in the stage of melt sticking.
CONSTITUTION: A partial ingot 2 is fixed perpendicularly on a water-cooled surface plate 7 connecting to a power source 10 through a current collector 9 by penetrating the central hole in the bottom of an auxiliary water-cooled casting mold 14 in such a way that at least the top end thereof is housed into a water-cooled casting mold 3. A slag bath 4 is formed into the space consisting of the mold 14 and the ingot 2 and the tip of a consumable electrode 1 to be electroslag-refined is dipped therein and is conducted with electricity, by which said electrode is successively melted. A molten metal bath 6 is formed in the lower part of the bath 4 and is solidified to fill gradually the space in the mold 14. The mold 3 and the ingot 2 are rotated via gears 12, 13 and the plate 7 by a speed-reducing motor 11 and therefore the baths 4, 6 rotate circumferentially. Then the quantity of the heat transmitted from the bath 6 to the ingot 2 is increased, by which the current density for melting is uniformly distributed and the steel ingot 2 is uniformly melted.
KODAMA HIDEYO
ICHIGE MAKOTO
ERA MASAYUKI
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