| 摘要 |
PURPOSE:To prevent the generation of a solidified shell in a gate for the molten metal on twin-rolls in the stage of casting continuously a steel plate, etc. with a twin-roll type continuous casting machine by passing electric current to the molten steel flowing down from a tundish and applying a magnetic field to the molten metal flow. CONSTITUTION:The molten steel 5 is supplied from the tundish 3 through nozzle, 4, 4' into the molten steel pouring basin constituted of side gates 2, 2' provided on the both sides of the twin rolls 1 and the rolls 1 are rotated, by which a steel ingot 8 is produced. Magnetic field generators 7, 7' such as coils are installed alongside the gates 2, 2' to form the magnetic field. Electricity is at the same time conducted to the molten steel 5 in the tundish as the anode and the rolls 1 or the ingot 8 as the cathode, by which the molten steel flows 9, 9' from the nozzles 4, 4' are shifted toward the gates 2, 2' accoring to the Fleming's left- hand rule. The steel ingot 8 having good quality is thus produced without cooling of the molten metal in contact with the side gates and the consequent formation of the solidified shell. |
