MOLD FOR CONTINUOUS CASTING, CONTINUOUS CASTING MACHINE, AND METHOD OF CONTINUOUS CASTING

To provide a mold for continuous casting, a continuous casting machine, and a method of continuous casting that allow realization of in-mold heat flux control approximate to ideal and are applicable to a continuous casting process of steel using mold flux.SOLUTION: A mold 1 for continuous casting has a cooling capability in the vicinity of a molten steel surface in a mold upper part made higher in cooling capability than a mold lower part, by providing any one or a plurality of factors of a cooling slit 3 shape (width and depth), a distance of a flow-passage front face of mold cooling water from a mold surface, a thermal conductivity of a mold copper plate 2, a flow velocity of mold cooling water, and a temperature of mold cooling water differently between the mold upper part and the mold lower part. A continuous casting machine comprises the mold 1 for continuous casting. A method of continuous casting uses the continuous casting machine, with applying as mold flux combination of mold flux having a crystallization percentage in area ratio when melted and cooled at a cooling rate of 10°C/min into solidification of 20% or more.SELECTED DRAWING: Figure 1 【課題】理想に近い鋳型内熱流束制御を実現するものであり、モールドフラックスを用いた鋼の連続鋳造プロセスに適用する連続鋳造用鋳型、連続鋳造機、及び連続鋳造方法を提供する。【解決手段】冷却スリット３形状（幅および深さ），鋳型冷却水流路前面の鋳型表面からの距離、鋳型銅板２の熱伝導率、鋳型冷却水流速、鋳型冷却水温、のいずれかもしくは複数の因子を鋳型上部と鋳型下部とで異ならせることによって、鋳型上部である溶鋼湯面近傍の冷却能力を鋳型下部の冷却能力よりも高めたことを特徴とする、連続鋳造用鋳型１。連続鋳造用鋳型１を備えた連続鋳造機。前記連続鋳造機を使用し、モールドフラックスとして、溶融し１０℃／ｍｉｎの冷却速度で冷却し凝固させたときに結晶化率が面積率で２０％以上であるモールドフラックスを組み合わせて適用することを特徴とする連続鋳造方法。【選択図】図１