Research Of Dynamic Water Distribution Control For Secondary Cooling Section In Slab Continuous Casting

In the casting process production, secondary cooling technology is one very important key link them. In actual industrial production, due to the interference of various uncertainties exist, and this will lead to changes in production scheduling plan. Requiring continuous caster adjustment will pull speed to make adjustments on the original cast time to meet the timing requirements of scheduling, the amount of cold water and the need for two continuous real-time dynamic optimization settings. From the current published literature can be seen, and now technology has achieved a steady state control caster secondary cooling water quantity, the steady-state control parameter optimization, and dynamic control of the transition process of the second volume of cold water. However, real-time dynamic optimization studies to explore issues related to the second set of smaller amounts of cold water has been the difficulty of dynamic secondary cooling water control. This is the paper tries to study and solve problems.Firstly, according to the content of real-time dynamic optimization problems of current continuous casting machine are elaborated in this paper, and introduced the difficulties encountered in the study and coping strategies adopted. A large number of time-consuming calculate of case studies found in the water optimization process, this paper establishes a dynamic model of billet life cycle model and one dimensional heat transfer model based on a simplified. In this model to simplify the existing life cycle model through appropriate end of life some life unit.Secondly, on the basis of the dynamic model of the slab, this paper presents a real-time dynamic optimization method for setting of water which based on the idea that the state of the slab temperature transfer along the ideal trajectory. The desired state trajectory and determine the heat transfer intensity curves were explained in detail, and the secondary cooling zone single solidification unit heat intensity were made specifically addressed.Finally, data for a certain type of steel caster grades, the proposed method of real-time dynamic optimization of water was simulated experiments. Moreover, the same subjects were using a dynamic model of this paper’s dynamic real-time control and the traditional parameters of water distribution method controlled experiment. Finally, the experimental results were compared and analyzed, which shows real-time dynamic water distribution scheme proposed in this paper has better effectiveness and superiority.