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To improve billet quality and the trackability and stability of secondary cooling water during continuous casting, the tundish temperature is introduced into the water distribution for secondary cooling to design the relevant control system, based on the water distribution model, tundish temperature, surface temperature and fuzzy self-adaptive PID. A spray cooling system is thus set up for simulation...
The continuous casting process is used for the solidification of molten steel into semi-finished shapes. The technology of secondary cooling is extremely important for output of the casting machine and quality of the strand. In the paper, a dynamic control system is presented, including solidification model in the secondary cooling, feedforward control based on continuous temperature measurement in...
Control models and control strategies on hot strip mill's laminar cooling system, including water level control, feedforward control and feedback control of coiling temperature with smith predictor, is introduced. Steady water level can be got by water level control model, which is very important for water flux stabilization and the setup precision of process computer. Feedforward control strategy...
In continuous casting of steel, a number of parameters have to be set, such as the casting speed and cooling water flowrate, in which the secondary cooling has a considerable influence on cracks and other defects of the billets. The aim of this paper is to develop a optimization algorithm used for solving the optimal secondary cooling water flowrate under different casting speeds with respect to multiple...
A two-dimensional heat transfer model for simulation and control of a continuous steel billet caster is presented. The convection heat transfer coefficient for each segment of secondary cooling zone is determined, which is the boundary conditions of heat transfer model. An improved ant colony optimization (ACO) algorithm to identify the calibration constants of convection heat transfer coefficient...
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