| 摘要 |
PROBLEM TO BE SOLVED: To continuously cast a steel slab of excellent surface layer quality with less pin holes. SOLUTION: When continuously casting an Al-killed or Ti-killed slab by blowing inert gas into molten steel 2 in a dipping nozzle 4, discharging the molten steel 2 from the dipping nozzle 4 and feeding it in a mold 5, the value of a correlation expression of a plurality of casting conditions consisting of three elements of the casting speed Vc (m/min.), the discharge angleθ(°) of the molten steel 2 discharged from the dipping nozzle 4, and the diameter d(mm) of a discharge hole 9 of the dipping nozzle 4 with the molten steel 2 discharged therefrom as the casting condition while specifying a lower limit to the content of the element S contained in the molten steel and an upper limit to the casting speed Vc (m/min.). COPYRIGHT: (C)2005,JPO&NCIPI
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