CONTINUOUS CASTING METHOD OF ACTIVE MOLTEN METAL

摘要

PURPOSE:To provide an improvement in the quality of a steel ingot, etc. by providing a refractory heat insulating receiving tank on the upper stream side of a casting mold, disposing a refractory partition plate therein and filling an inert gas in the space above the top surface of the molten metal. CONSTITUTION:The refractory heat insulating receiving tank 10 is provided on the directly water cooled cylindrical casting mold 2 and is connected horizontally with a spout 12. The refractory partition plate 16 is disposed to part the surface of the molten metal column formed by the tank 10 and the surface of the molten metal 14 to be supplied. The incorporation of the suspended matter 18 such as the resultant product of reaction on the surface of the molten metal 14 into the steel ingot 8 is prevented by the plate 16. The inert gas such as Ar is supplied through a pipe 2 into a hermetic space 24 formed of a cover 20 so that the surface of the molten metal 14 is shut off from the atm. The surface of the metal 14 is prevented from reacting with steam and the incorporation of the suspended matter 18 into the ingot 8 is prevented by the above-mentioned method, by which the quality of the ingot 8 is improved and the cost is reduced.