| 摘要 |
PROBLEM TO BE SOLVED: To provide a continuous casting method, with which an immersion nozzle is not clogged and a cast slab having little non-metallic inclusions and excellent cleanliness and little bubbling defect can be obtained. SOLUTION: A molten metal supplying device is constituted of a ladle nozzle 5 provided with a discharging hole 6 of molten steel at the side surface part of a part whose lower end part is closed and which is dipped into the molten steel, a cylindrical immersion tube 7 whose lower end part is located at the position lower than the lower end part of the ladle nozzle, and provided with a flowing-pass hole 8 for molten steel at the side surface part of a portion dipped into the molten steel and a tundish 1 for pouring the molten steel from the ladle. Further, the device is disposed with the immersion tube whose upper end part is airtightly connected to the ladle nozzle, at the outside of the ladle nozzle and provided with an inert gas blowing hole 4 at a portion where is not dipped into the molten steel in the interval from the ladle nozzle to the immersion tube, and with a gas exhaust hole 9 at a portion where is not dipped into the molten steel, of the immersion tube, and allowing the lower end part of the immersion tube to contact with the bottom part of the tundish. This device is used for the continuous casting of steel.
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