Continuous casting method of the coagulation state estimation apparatus and the coagulation state estimation method, as well as steel

摘要

PROBLEM TO BE SOLVED: To acquire the surface temperature of a cast slab in a continuous casting as a suitable value to use for the estimation of the solidification state thereof.;SOLUTION: A continuous casting apparatus 1 manufactures a cast slab S continuously by drawing a molten steel 2 charged into a casting mold 4, and by performing a secondary cooling by making the cast slab pass through a secondary cooling zone constituted by a plurality of cooling zones 7a-15a, 7b-15b divided along the drawing direction. The continuous casting apparatus 1 includes a thermometer 16 which measures the surface temperature of the casting slab S in the secondary cooling. The thermometer 16 is installed, among the cooling zones 7a-15a, 7b-15b, at positions in the cooling zone including the position of the casing slab S where the surface temperature rises by the recuperation from interior in the process of the secondary cooling, in the vicinity of this cooling zone, or in a position downstream of this cooling zone.;COPYRIGHT: (C)2014,JPO&INPIT