MELT METAL VACUUM TREATMENT METHOD

摘要

FIELD: metallurgy. ^ SUBSTANCE: method comprises steps of supplying melt metal into metallurgical ladle for filling it till safety height in range 0.4 - 0.6 m; treating metal due to creating over ladle partial vacuum atmosphere at simultaneous agitation of melt metal by feeding helium from bottom of ladle during part of treatment period or the whole period of treatment; realizing treatment such as dehydrogenation and denitration of steel at supplying helium flow 1.875 standard l/min per ton of melt metal or more. Invention provided s possibility for treating in lade larger quantity of metal, particularly steels needing final content of carbon less than 60 pro mille. It is also may be used in any vacuum metallurgical process needing agitation when it is necessary to provide safety height. ^ EFFECT: possibility for treating in ladle larger quantity of metal. ^ 8 cl, 2 ex