Abstract: A method for the continuous production of cast steel strands which are 200 mm.times.200 mm or less in cross-section by a continuous casting process in which molten steel containing over 0.20% of carbon is fed into a casting mold with a lubricant through a submerged nozzle or in an open stream and continuously drawn out downwardly of the casting mold, which includes the steps of (a) electromagetically stirring the molten steel at a position within said casting mold by the application of a magnetic field induced by introducing into an electromagnetic coil an alternating current of a frequency (f) in the range of 1.5 to 15 and maintaining the magnetic flux density (gauss) in the range of 602 e.sup.-0.10f to 1844 e.sup.-0.

Abstract: A method for the continuous production of cast steel strands which are 200 mm.times.200 mm or less in cross-section by a continuous casting process in which molten steel containing 0.20% or less of carbon is fed into a casting mold with a lubricant through a submerged nozzle or in an open stream and continuously drawn out downwardly of the casting mold. The method includes the steps of (a) electromagnetically stirring the molten steel at a position within said casting mold by the application of a magnetic field induced by introducing into an electromagnetic coil an alternating current of a frequency (f) in the range of 1.5 to 15 hertz and maintaining the magnetic flux density (Gaub) in the range of 602e.sup.-0.10f to 2441e.sup.-0.

Abstract: A device for electromagnetically regulating the pouring rate in continuous casting, including a cylindrical molten steel container having a molten steel inlet formed in a peripheral section of an upper surface thereof and a molten steel outlet formed in central section of a lower surface thereof to pour the molten steel into a mold, and electromagnetic coils disposed around the side wall of the molten steel container so as to generate a rotating magnetic field perpendicularly to the side wall. The pouring rate is determined by the interactive function of the head of the molten steel in the tundish disposed above the molten steel container with the outlet thereof joined to the inlet of the molten steel container, the intensity of the rotating magnetic field, namely, the magnitude of the electric current supplied to the electromagnetic coils, and the size of the molten steel outlet, namely, a replaceable pouring nozzle.

Abstract: A horizontal continuous casting process wherein at least two electromagnetic stirring devices of a rotary magnetic field type are arranged in series direction whereby electromagnetic stirring force acts on non-solidified molten metal, and the distance between the electromagnetic stirring devices of first and second stages is set to specified relation.

Abstract: An electromagnetic within-mold stirring method and apparatus wherein electromagnetic stirring is imparted to molten steel passing through a mold, under the following conditions where the maximum flux density (in gauss) of a magnetic field induced by an electro-magnetic coil ranges from 1045.e.sup.-0.16f to 2054.e.sup.-0.12f (f: frequency, 1-15 Hz) and the place of the maximum magnetic flux density is within the range of 350 mm from the junction between the pouring nozzle and the mold in the direction of drawing of the cast-piece.