On Joint Deoxidation and Refining of Steel with Complex Alloys

Abstract

Based on the results of theoretical and laboratory studies of structural steel ladle processing with multicomponent aluminum-containing modifiers with alkaline earth metals (AEMs), the thermodynamic and technological advantages of using Ca–Al and Ba–Al complexes instead of standard technology (deoxidation with aluminum and modification with silicocalcium) have been identified. The use of a complex microcrystalline alloy Fe–Si–Al–Ca–Ba makes it possible to combine the processes of deoxidation and refining of steel, reduce metal contamination with non-metallic inclusions (NI), reduce deoxidizer consumption and the duration of melt processing in the ladle.