| 摘要 |
PURPOSE:To eliminate the meniscus, to reduce the inclusion and to improve the quality of slab by arranging storing part for molten slag or inert gas between feeding nozzle and a mold as pressing to the mold together with the mold. CONSTITUTION:The storing part 7 is arranged between the feeding nozzle 3 and the mold 2 and the molten slag 8, which the powder is melted, is stored therein. The molten slag 8 is passed through a slit part 14 notching at upper end of inner peripheral side of a copper block 11 and supplied to annular gap part formed by the projecting part 3' at the lower end of feeding nozzle 3 and the inner peripheral wall of mold 2, to form the molten slag layer 6. In this case, the supplement of molten slag is executed by negative pressure at the time of drawing in intermittent drawing of the cast slab or pressurization through inert gas to the storing part 7. In this way, as the pouring flow of molten steel, caused by the submerged nozzle at the meniscus part is eliminated, the inclusion is reduced and the quality of cast slab is improved.
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