2 primary cooling control method, and a secondary cooling control device of the continuous casting machine

摘要

PROBLEM TO BE SOLVED: To provide a secondary cooling control method of a continuous casting machine, enabling accuracy when controlling the surface temperature of the whole cast metal to the predetermined target temperature to be enhanced.;SOLUTION: The secondary cooling control method of the continuous casting machine comprises a cast metal surface temperature measuring step, a casting speed recognizing step, a tracking surface setting step, a cast metal target temperature setting step, a temperature solid phase ratio estimation step, a heat transfer coefficient estimation step, a future prediction step, a heat transfer solidification model parameter correction step, a future prediction surface setting step, a future prediction step, a future temperature influence coefficient prediction step, a cast metal surface reference temperature calculation step, an optimization problem coefficient matrix calculation step, an optimization problem solution finding step and a cooling water quantity changing step. By repeating a change in a cooling water quantity for each cooling zone in the cooling water quantity changing step, the surface temperature of the cast metal in a future prediction surface position of a future prediction surface is controlled to a target value of the surface temperature of the cast metal determined by the cast metal target temperature setting step, during a period while each of the tracking surfaces moves up to a cooling zone outlet of a secondary cooling control object in the optional time in casting.;COPYRIGHT: (C)2014,JPO&INPIT