METHOD AND APPARATUS FOR MANUFACTURING A COMPOSITE STEEL INGOT

In manufacture of composite steel ingot, a consumed electrode 11 is inserted into an empty space concentric with the ingot 10, and electroslag remelting is effected under a slag bath 16 and the molten metal solidifies. Current is taken out through a plurality of collecting electrodes 12 electrically...

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Bibliographic Details
Main Authors KODAMA, HIDEYO, KONDO, YASUO, AKAHORI, KIMIHIKO
Format Patent
LanguageEnglish
Published 15.02.1984
Subjects
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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Summary:In manufacture of composite steel ingot, a consumed electrode 11 is inserted into an empty space concentric with the ingot 10, and electroslag remelting is effected under a slag bath 16 and the molten metal solidifies. Current is taken out through a plurality of collecting electrodes 12 electrically connected to the ingot. To obtain improvement in the uniformity of depth of fusion of the ingot, the flow path of the electric current passing from the consumed electrode to the collecting electrodes is moved in the circumferential direction of the ingot during the electroslag remelting, e.g. by rotating either or both of the ingot and the collecting electrodes. Further improvement may be achieved by varying the speed of movement of this flow path as the slag bath ascends the ingot.
Bibliography:Application Number: EP19830302743