Continuous casting apparatus for steel

A continuous casting apparatus for steel comprising:

• a casting mold for casting a molten steel, having a pair of long side walls and a pair of short side walls;
• a submerged entry nozzle which discharges the molten steel into the casting mold;
• an electromagnetic stirring device arranged along each of the long side wails to stir an upper part of the molten steel within the casting mold;
• and
• an electromagnetic brake device arranged below the electromagnetic stirring device to impart a direct current magnetic field in a casting mold thickness direction, which is along the short side walls, the direct current magnetic field having a flux density distribution which is uniform in a casting mold width direction, which is along each of the long side walls,
• wherein a curved portion which is curved toward the electromagnetic stirring device is formed at least at a position where the curved portion faces the submerged entry nozzle on each of the long side walls,
• wherein the horizontal distance between a top of the curved portion and the submerged entry nozzle in plan view is equal to or more than 35 mm and less than 50 mm,
• wherein the curved portion is formed in an internal surface of each of the long side walls,
• the external surface of each of the long side walls is a flat surface, and
• wherein the curved portion is formed at a top central position of the internal surface of each of the long side walls.