Continuous metal casting apparatus
AssigneeWestinghouse Electric Corp.
InventorsStephen B. Kuznetsov, Richard D. Nathenson
Life of this patent
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Abstract
In a continuous casting vessel, the gap between the feed column of molten metal and the mold inlet port is electromagnetically sealed by applying polyphase current on the edge of the inlet port to form therewith an intergral inductor effective to contain the metal in the pool about the meniscus at the base of the feed column in the sunk nozzle.
Claims11
Continuous casting apparatus including a casting vessel having an upper wall and a lower wall made of thermally and electrically conductive metal, at least one outlet for extracting solidified metal therefrom and an inlet for admitting molten metal therein said inlet being defined in the upper wall and forming a rim therewith;
- a feeding nozzle sunk into the molten metal of said casting vessel through said inlet for maintaining a feeding column of liquid metal above said inlet;
- said inlet being defined by an annular portion of said casting vessel;
- said nozzle and said annular portion defining a gap therebetween;
- means being provided for passing polyphase alternating currents through said annular portion to induce eddy currents in the molten metal adjoining said gap;
- a plurality of extensions of the same vessel wall metal being formed vertically at regularly distributed locations on said rim, one such extension being provided for a corresponding phase of said polyphase alternating currents, said alternating current passing means being electrically connected to said plurality of extensions;
- whereby electromagnetic forces are generated in the molten metal to prevent escape thereof and to maintain said feeding column.
Dependencies are inferred from the claim text.