Stabilization of vacuum arc remelting of steels and alloys

The main cause of the electrode mass melting rate oscillations during vacuum arc remelting (VAR) of steels and alloys is shown to be the displacement of an arc into zones with different metallic vapor pressures. For the remelting process to be stabilized, the arc space length should be controlled as...

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Bibliographic Details
Published in:Russian metallurgy Metally 2012-12, Vol.2012 (12), p.1017-1021
Main Author: Belyanchikov, L. N.
Format: Article
Language:English
Subjects:
Alloys
Chemistry and Materials Science
Electric arc melting
Electrodes
Manufacture of Ferrous and Nonferrous Metals
Materials Science
Melting
Metallic Materials
Oscillations
Stabilization
Steels
Vacuum arc melting
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Summary:The main cause of the electrode mass melting rate oscillations during vacuum arc remelting (VAR) of steels and alloys is shown to be the displacement of an arc into zones with different metallic vapor pressures. For the remelting process to be stabilized, the arc space length should be controlled as a function of the electrode melting rate and the shrinkage defects in cast electrodes should be removed by high-temperature gasostatic treatment.
ISSN:0036-0295
1555-6255
1531-8648
DOI:10.1134/S0036029512120038