2 2 SECONDARY COOLING CONTROL METHOD FOR CONTINUOUS CASTING MACHINE AND SECONDARY COOLING CONTROL DEVICE

摘要

The present invention, possible to increase the accuracy of the time to control the surface temperature of the whole slab to a pre-set target temperature, to provide a secondary cooling control method for a continuous casting machine for the primary purpose. The present invention, the cast slab surface temperature measuring step, and the casting speed identifying process and a tracking surface setting step, a cast steel target temperature setting step, a temperature high sangryul estimation step, a heat transfer coefficient estimation step, a heat transfer solidification model parameter modification process and, the setting step if the future prediction, has a future prediction step, the future temperature effect coefficient prediction step, a cast slab surface reference temperature calculating step, an optimization problem coefficient matrix calculating step of solving optimization problems process and cooling water and to change the process , during the movement by repeating the change of the cooling water of each cooling zone in the cooling water change process, casting the respective tracking plane at an arbitrary time to the cooling zone outlet of the target secondary cooling being controlled, the future prediction plane, the future and controls the surface temperature of the cast surface in the position prediction, the target value of the cast slab surface temperature set by the target temperature setting step. ;