Induction - Plasma Furnaces Are a New Progressive Type of Electroheat Equipment. Session 2.1 N.2.1.5

摘要

One of the perspective ways to substantially increase the equipments capacities and molten quality is the application of combined induction-plasma heating. Confirmed is the technological efficiency of using the combined induction-plasma furnaces (CIPF) for melting steel, cast iron, aluminium alloys. Thus while melting steel in CIPFs metal losses of the basic alloying elements are actually absent, low concentration of oxygen in metal is achieved, non-metallic inclusion content is lowering, their breakage and spheroidizing is occurring. High reactivity and liquid mobility of slag in CIPF and its intensive blending contribute to removal of sulphur out metal and to that of non-metallic inclusions out of bath into slag. The investigations have shown that the features of steels smelted in CIPF do not go second to the properties of metal of induction-vacuum melting. Created in the USSR are induction-plasma furnaces of 0.16; 0.25; 1.0 and 1.6 t capacities and elaborated are furnaces of 6.0 and 10.0 t capacities. Experimentally studied at the operating furnaces have been their power parameters, methods of their estimation have been elaborated, the basic constructive decisions have been worked out, technological possibilities have been considered. (ERA citation 10:027901)