Improvement of the Electric Arc Furnace Manufacture of R6M5 Steel

Abstract

The process of making R6M5 steel by remelting with oxygen blowing in a 20-t electric arc furnace is considered. To improve the technical-and-economic indices of the furnace operation, the following measures are tested on a series of pilot heats: the introduction of oxygen under the metal melt surface in a molten-metal bath using a consumable uncooled tube and heating of the scrap in a charging bucket by effluent gases to a temperature of 250–370°C. These measures lead to a decrease in the heat time, the metal loss, and the specific consumption of electric power and oxygen.