Continuous Casting Method, Continuous Casting Apparatus and Continuously Cast Steel Slab

摘要

The invention the reduction unsolidified slab improve the efficiency, and provides a continuous casting method, continuous casting apparatus and a cast steel which can reduce the segregation state of the heart convenience thickness direction. ; The present invention is a cast steel shown in (1) Steel continuous casting method, (2) The continuous casting device and the following (3) produced by the method shown in shown in. 1, after the cast slab comprising an unsolidified bulging (Bulging), a continuous casting method for the reduction by using a pair of reduction rolls, in a continuous casting machine, the lower roll of the pair of rolling rolls the cast down path reduction than projected by the continuous casting line teaching method. (2) disposed bulging after, in the continuous casting machine, the lower roll (7b), a main pair of rolls (7) than the projecting reduction by convenience bottom pass line 9 of the pair of rolling roll 7 to a cast steel continuous casting device classes. (3) in the center of the main center piece monument convenience thickness direction C / Co is the slab manufactured by the continuous casting apparatus or a continuous casting method (2) of the (l) in the range of 0.7~ 1.2. ; Continuous casting, continuous casting machine, bulging, the screw down, solidified shell