Levitskaya T. Improvement of the properties of slag-forming mixtures in order to improve the quality of continuous cast steel billet

Goal - improving the quality of continuous cast steel billet by choosing the rational structures of the SCO. Object - slag-forming mixture for continuous casting. Subject - the surface properties, and the flow characteristics, smelting capacity SCO. Methods - sessile drop method, vibro thermal mapping, numerical methods, mathematic planning of experiments. Results -in sessile drop method was proposed additional fixing horizontal projection of the drop, that made not just qualitatively but also and quantitatively estimate about its symmetry, was improved method of determine the wetting angle of industrial metallurgical liquid-alloys, was improved the mathematical tools for solution of main equation of surface drop, that made possible to automatize analysis of superficial tension of molten metal with high precision, was developed hightemperature experimental arrangement for research of surface properties of molten metal, was arranged getting more cheaper and less toxic mixtures with reduced temperature of melting composition correction of SCO on the cement base, that let to reduce the flowing temperature, viscosity effectiveness, superficial tension, was showed positive influence of replacement cement by blast-furnace slag in SCO without decline the physicochemical properties formed drom its melted slag. Industrial tests showed declining the rejection of slabes in 2.5, flat steel in 2 times, silicate and oxide inclusions in 2 times.