Electroslag remelting of consumable electrodes - where rectifiers prevent positive voltage on mould, so mould wear by electro:erosion is eliminated

Electroslag remelting of consumable electrodes - where rectifiers prevent positive voltage on mould, so mould wear by electro:erosion is eliminated

The plant includes a transformer with a sec. winding connected to >=2 consumable electrodes the bottom ends of the latter being immersed in a melt in a mould which rests on a base. Both the mould and its base are connected via rectifiers to the sec. winding of the transformer so that only d.c. fl...

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Bibliographische Detailangaben
Hauptverfasser: I. KIRSANOV,PAVEL, B. GUTNOV,RUSLANBEK, M. MARTSCHENKO,ALEKSANDR, V. PAVLOV,LEONID, M. PLATONOV,PAVEL, L. ARTAMOV,VIKTOR, G. BOGATSCHENKO,ALEKSEJ, I. MEDOVAR,BORIS, M. KAMENSKIJ,JURIJ
Format: Patent
Sprache:eng ; ger
Schlagworte:
CHEMISTRY
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:The plant includes a transformer with a sec. winding connected to >=2 consumable electrodes the bottom ends of the latter being immersed in a melt in a mould which rests on a base. Both the mould and its base are connected via rectifiers to the sec. winding of the transformer so that only d.c. flows from the mould and its base through the rectifiers to the sec. When 3 electrode holders are used with a 3-phase supply connected in delta, the mould and its base are pref. connected via min. three rectifiers to the power supply. The overall result is that a positive voltage cannot be created on the mould walls, so the life of the mould is increased and it does not contaminate the melt.