METHOD OF MAKING STEEL INGOTS

In a method and apparatus for making steel ingots with low hydrogen and sulphur contents according to the electric slag remelting procedure an electrode to be remelted is guided through an opening in a lid of a mould, an annular gap is provided between the opening in the lid and the electrode, a flu...

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Bibliographische Detailangaben
Hauptverfasser:	JAEGER, HEIMO, KLEINHAGAUER, OTMAR, KUEHNELT, GERT
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY PERFORMING OPERATIONS POWDER METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	In a method and apparatus for making steel ingots with low hydrogen and sulphur contents according to the electric slag remelting procedure an electrode to be remelted is guided through an opening in a lid of a mould, an annular gap is provided between the opening in the lid and the electrode, a flush gas is introduced into the mould and into the annular gap, the hydrogen content of the slag is lowered before remelting starts, dry air is introduced into the mould to above the slag during the remelting procedure, and a gas curtain of dry air is simultaneously created in the annular gap to prevent watervapour-containing air from entering the mould.