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

摘要

The main object of the present invention is to provide a secondary cooling control method of a continuous casting machine capable of raising the precision in controlling the surface temperature of the entire cast steel to a predetermined target temperature. The present invention relates to a casting material casting method comprising a casting surface temperature measuring step, a casting speed grasping step, a tracking surface setting step, a casting target temperature setting step, a temperature solidity rate estimating step, a heat transfer coefficient estimating step, A future prediction surface setting step, a future prediction step, a future temperature influence coefficient predicting step, a casting surface reference temperature calculating step, an optimization problem coefficient matrix calculating step, an optimization problem solving step, and a cooling water changing step , The cooling water quantity changing process for each cooling zone is repeatedly performed in the cooling water quantity changing process so that while each tracking surface is moved to the cooling zone outlet of the secondary cooling control object at an arbitrary time during casting, The surface temperature of the cast steel at the predicted plane position is controlled to the target value of the surface temperature of the cast steel determined in the casting target temperature setting step.