| 摘要 |
PURPOSE: A nozzle for uniformly supplying molten steel in a continuous casting line is provided to remove congestion zone of molten steel and uniformly grow solidification shell by uniformly supplying molten steel into general mold and twin roll, and improve quality of slab by restraining concentration of impurities on the surface of molten metal. CONSTITUTION: In a rectangular nozzle(7) for continuous casting line which is formed in a rectangular parallelopiped shape as a whole, and on the side wall of which a plurality of discharge ports are formed, the nozzle for uniformly supplying molten steel in a continuous casting line is characterized in that the nozzle is formed in such a manner that height of an external form is at least the same as or more than immersion depth of the discharge ports, width of each side wall is at least the same as or more than width of one discharge port, each of discharge ports has 20 degrees or more of horizontal direction angle (α), 3 to 100 mm of width (W) and 5 to 100 mm of height (H), a distance (S) between each of the discharge ports is 10 mm or more, and immersion depth (SH) of the discharge ports is 10 to 100 mm.
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