Increasing the endurance of electrodes of heating salt tanks

Electrodes used for heating, melting, and sustaining the requisite temperature regime in salt tanks for heat treatment of metals and alloys operate under severe conditions (heating to 1300°C, aggressive medium of the melts of salts of alkali and alkali-earth metals). This causes early failure of the...

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Bibliographic Details
Published in:Metal science and heat treatment 1997-05, Vol.39 (5-6), p.224-225
Main Author: KULIKOV, A. I
Format: Article
Language:English
Subjects:
Applied sciences
Corrosion
Corrosion prevention
Corrosion resistant steels
Electrodes
Exact sciences and technology
Failure
Heat treatment
Machine shops
Metals. Metallurgy
Service life
Sustaining
Tanks
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Summary:Electrodes used for heating, melting, and sustaining the requisite temperature regime in salt tanks for heat treatment of metals and alloys operate under severe conditions (heating to 1300°C, aggressive medium of the melts of salts of alkali and alkali-earth metals). This causes early failure of the electrodes, and the heat treatment unit is stopped for repair. For example, the design service life of electrodes for SVS 2.3/13I tanks is two months, but as a rule it does not exceed one month of continuous operation. The replacement of conventional low-carbon electrode steel (for example, of grade 10) by a more expensive heat- and corrosion-resistant steel has not proved effective but rather increased the cost of the electrodes and hence the cost of the produced parts. In this connection, it is interesting to get acquainted with works devoted to increasing the service life of salt-tank electrodes for heat treatment shops of machine-building and tool plants. The present paper describes such an attempt.[PUBLICATION ABSTRACT]
ISSN:0026-0673
1573-8973
DOI:10.1007/BF02467291