CONTINUOUS CASTING METHOD OF STEEL

摘要

PURPOSE:To perform sure descaling by providing a descaling zone which injects directly impact water to the surface of a billet in an optional part except the tail part of a slow cooling zone and continuing slow cooling after removing forcibly the surface scale. CONSTITUTION:A descaling zone 20 which injects directly impact water to the surface of a high-temp. billet 1 is provided in an optional part except the tail part of a slow cooling zone 72 and after the surface scale is forcibly removed, the slow cooling is continued to recuperate the heat of the billet 1 with a continuous casting method for producing the billet 1 by providing the zone 72 in succession to a quick cooling zone 71 in an area 7 right under a casting mold 5 where a secondary cooler is disposed and forming a solidified shell 11 having a prescribed thickness to the billet then cooling slowly the billet so as to approach a crater end 10 to the position 8 to be sized and cut. The sure descaling is thus made possible without producing the temp. drop of the billet.