(Луцький національний технічний університет, 2019) Miroshnichenko, V. I.; Simkin, O. I.; Мірошниченко, В. І.; Сімкін, О. І.
An early developed approach toanalytic modeling the water-air coolingof flat steel products, based on meeting the “additivity” rule requirements, is applied to the secondary cooling of continuously cast slabs. The regimes, developed using the approach, provide optimal combinations of the heat transfer rate, residual stresslevels and nonlinear phenomena absence during the cooling. Good accordance of the calculated and industrially measured cooling trajectories together with the corresponding regime parameters was reached. The use of analytic dependencies obtained provides the higher effectiveness to control the secondary cooling compared with currently applied techniques of numerical on-line solving the systems of differential equations. The cooling regimes developed provide “softer” cooling within the whole temperature range, compared with the early models. An additional improvement of the slabs’ surface quality is expected to obtain because of the slowcooling according to the developed regimes.
