Physicochemical prerequisites for the development of complex relationships between the properties of metallurgical melts in order to predict the regularities of the distribution of elements during the finishing of steel on a ladle furnace

Abstract

The aim of the work is to create a base of physical and chemical knowledge with blocks of operational analytical expressions that predict the complex properties of metal, slag melts and additives. The base is designed for a scientifically sound product of control actions for the purpose of directed formation of high-quality metal when bringing steel to the UCP. As a basis for describing the processes of interaction of phases in the work used the original method of physico-chemical modeling of the composition and properties of metallurgical melts, as well as experience in creating information and analytical systems for forecasting and controlling the smelting process. Models for forecasting the properties of steels and alloys for special purposes (chromium-nickel, iron-carbon steels of a wide range, aluminum, magnesium, heat-resistant nickel alloys) and ferroalloys of domestic production have been developed. High accuracy of forecast and stability of analytical expressions is obtained, which is confirmed by comparison with calculations on a software computer complex. The possibility of using interatomic interaction parameters to determine the activities of components in binary and multicomponent metal systems is shown. On the example of steel 09G2C, the structure of models for the distribution coefficients of elements, in particular Si and Mn, between the products of smelting during ladle processing was generated. The structural similarity of the models for determining the distribution coefficients of these elements is revealed, which is due to their proximity to the structure of clusters of one-component melts. The results of the work should be recommended for integration in ASNI and ASUTP of steel production in order to form a competitive end product.