| 摘要 |
PURPOSE:To uniformly cool a cast slab by inclining a rectangular injection hole of a spray nozzle to width direction of a cast slab, so that injection flows from adjoining spray nozzles are not mutually overlapped and cooling the cast slab by the overlapping injection flow accopanied with advancing direction of the cast slab. CONSTITUTION:The rectangular injection hole of the spray nozzle 1 is arranged as inclining by angle alpha to the width direction of the cast slab. The injection flows from the adjoining spray nozzles 1 are not mutually overlapped and the cast slab is cooled by ellipse-state injection flows 3 having inclination to the advancing direction of the cast slab and mutually some slippage. Further, the injection angle gamma2 of the spray nozzle 1 is larger than usual, to enlarge cooling area per one of the nozzle. By this method, distribution of the injection flows to the width direction of the cast slab is stabilized and the cast slab can be uniformly cooled.
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