PURPOSE: To reduce disturbance in meniscus part and to improve quality of a cast strip by inclining lower end part of a parting wall for dividing a molten metal flow out hole in the width direction of cast strip toward the width end face direction of cast strip and inclining inner face at lower part of both ends in a nozzle to the width direction of cast strip toward outer part.
CONSTITUTION: By inclining the parting wall 4 for dividing the molten metal flow out hole 3, 5 in the width direction of cast strip toward the width end face direction of cast strip and also the inner face at lower part of both ends in the nozzle 1 in the width direction of cast strip toward the outer part, a part of the molten metal flowing from the molten metal flow out holes 3, 5 of the nozzle 1 has speed component directed to the width end face direction of cast strip. By this method, the molten metal flowing out in the width direction of cast strip in a casting mold 7 is made to easily disperse and unevenness in the molten metal flow in the casting mold 7 is reduced. Further, at the same time, as inducing of the molten metal around the nozzle is made to gentle, the disturbance in the meniscus part 20 is remarkably reduced. Therefore, as distribution of solidifying starting point of the molten metal in the casting mold is made to almost the straight line state in the width direction of cast strip, the quality of cast strip is improved.
HIRATA KOICHI
HANAGIRI SEIJI
YUYAMA HIDETOSHI
NIPPON STEEL CORP
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