Tundish for continuous casting of free cutting steel
AssigneeNippon Steel Corporation
InventorsKazuo Ishiyama, Masashi Yoshida, Isao Suzuki, Ichiro Kudo, Akira Otaki, Noboru Okuyama
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Abstract
A tundish for continuous casting of a free-cutting steel comprises a molten steel teeming zone into which a low melting metal is added to a molten metal as a machinability element, a dispersing means provided in the flow path of the molten steel between the molten steel teeming zone and a discharge outlet for the molten steel, and a dam installed downstream the dispersing means.
Claims6
A tundish for the continuous casting of a free-cutting steel, said tundish comprising a covered vessel having a top portion, a bottom portion and side portions, said top portion having an inlet for the addition of molten steel and a powdered low melting machinability element, said bottom portion having in sequence, downstream of a point exactly below said inlet, at least one gas ejector means, at least one upwardly projecting dam means and at least one outlet, said gas ejector means adapted to disperse said powdered low melting machinability element in said molten steel, said dam means adapted to prevent undissolved powdered low melting machinability element from flowing from said outlet.
Dependencies are inferred from the claim text.