CONTINUOUS CASTING DEVICE OF SLAB AND ITS CONTINUOUS CASTING METHOD

PROBLEM TO BE SOLVED: To provide a continuous casting device of a slab for producing a high quality slab in which the flaw of a product is reduced by suppressing the turbulence of a molten metal flow in a continuous casting mold, and to provide a continuous casting method therefor. SOLUTION: The continuous casting device 10 comprises a submerged nozzle 11 where the central axis of ejection openings 13 provided on both the sides of a tubular body 18 is set within a predetermined range, and a continuous casting mold 12 where electromagnetic stirrers 15 are provided in wide long piece members 21, 22 forming a space section 23 having a rectangular cross-section, and produces a slab by supplying molten metal 14 into the casting mold 12 through the ejection openings 13 of the submerged nozzle 11 and solidifying the molten metal while stirring by means of the electromagnetic stirrers 15. Upper end position of the ejection opening 13 is set below the lower end position of the electromagnetic stirrer 15, and a magnetic shielding plate 16 for regulating a magnetic field being generated is provided at a lower position of each electromagnetic stirrer 15. Assuming the thickness in the height direction of the core 24 of the stirrer 15 is h, the interval s in the height direction of the magnetic shielding plate 16 and the electromagnetic stirrer 15 is set in the range of h/5 to h. COPYRIGHT: (C)2009,JPO&INPIT