| 摘要 |
PURPOSE:To remove rationally the non-metallic inclusions suspended in a molten metal, for example, molten steel and to obtain a defectless continuous casting billet by providing a filter made of refractories. CONSTITUTION:A filter 7 is installed to partition the inside of a tundish 2 with the top end thereof projected from the surface of a molten steel in such a way that substantially whole of the molten steel from a long nozzle 3 to the inside of the tundish 2 flows toward the apertures 4 where pouring nozzles 6 are installed after passage through the filter 7. The filter 7 is adequately made of, for example, alumina refractories which allow permeation of the molten steel but can capture the non-metallic inclusions and have preferably internally communicating spaces of a three-dimensional network structure. A filter 8 made of the above-mentioned refractories is mounted to the long nozzle 3 in such a way that substantially whole of the molten steel flowing toward the tundish 2 from the nozzle 3 passes through said filter when necessary. |
