| 摘要 |
PURPOSE:To produce a beltlike steel body directly and easily from molten steel with reduced rolling stages by transferring the molten steel through cooling rolls, a cooling mechanism by a gas and a cooling mechanism by water successively. CONSTITUTION:Molten steel 2 is developed in an intermediate spout 3, and is transferred under cooling between cooling rolls 5 and 7 for molten steel. The rolls 5, 7 are so adjusted that the segment connecting the revolving shafts of said rolls comes within a 30-60 deg. range with respect to a horizontal plane. The rolls 5, 7 are supported with backup rolls 9, 10, and oil supplying mechanisms 12 are provided to form oil films on the rolls 9, 10. Further, a solid lubricant is supplied to the roll 5 from a supplying mechanism 13. The steel strip 21 formed with solidified layers between the rolls 5 and 7 is passed through the 2nd cooling and transferring mechanisms consisting of upper and lower supporting plates 23, 25, where a gas as a coolant and a lubricant is blown through slits 27. Thereafter, the steel strip is passed through the 3rd cooling and transferring mechanism provided with cooling nozzle groups 31 for injection of water, where the strip is thoroughly cooled and solidified to the inside. Heat loss and rolling load are decreased by said mechanism. |
