Abstract: In a twin roll system continuous casting machine for continuously casting a steel plate through a gap between a pair of internal cooling rolls rotating in the opposite direction to each other, a continuous casting apparatus for steel plate comprises side dams installed on both sides of the pair of rolls to form a pouring basin on the circumferential surfaces of the pair of rolls, the side dams consisting of fixed side dams contacting molten steel in the pouring basin and movable side dams installed below the fixed side dams and substantially without contacting the molten steel in the pouring basin and moving in the same direction as the cast plate.

Abstract: A pair of rotating rolls cool the molten metal to form a solidified shell on the surface thereof and compress the solidified shells to produce a metal sheet. A number of bearing boxes are disposed in a housing for rotatably supporting the respective ends of the rolls, and a rigid member is disposed between the bearing boxes in the housing. A prestress or initial force is applied to the rigid member through the bearing box, and a controller regulates the rotating speed of a drive in order to control the separating force occurring at a compression of the solidified shells by the rolls. By controlling the separating force, a leakage of the molten metal is prevented and a sheet metal having a uniform thickness is continuously obtained.