Abstract
The paper is devoted to the results of the scientific research around development of the system for computer-aided design of secondary cooling sections of the continuous casting machine. Results of the theoretical analysis showed the existence of sophisticated mathematical models for describing heat state of bodies which are not fully employed for solving design tasks in metallurgy. The mathematical model of the slab heat state and formalized description of two requirements to temperature profile across the slab surface form the basis of the developed system. The authors propose the optimization problem formulation for the search of set of variable-length vectors with coordinates that define nozzle positions in each nozzle row. Solving the optimization problem involves iterative search of the optimal solution by solving heat equation with different input conditions. The paper shows the structure of the computer-aided design system for calculating optimal nozzle layout in the secondary cooling sections and describes three main scenarios of interaction between user and system. Analysis of the particular nozzle layout obtained with help of the system is provided. The results show that this layout provides even heat removal across the slab surface. Search of the optimal placement of nozzles in one nozzle row require around 300 iterations of calculations. Calculation of the whole layout takes about 2 hours.
Keywords
Computer-aided design, continuous casting machine, desing of secondary cooling sections, optimal nozzle layout.
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