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Scrap Recovery and Casting with a Nonconsumable Electrode

 

作者: Albert R. Vaia,   Ronald R. Akers,   Sam Damon,  

 

期刊: Journal of Vacuum Science and Technology  (AIP Available online 1971)
卷期: Volume 8, issue 6  

页码: 13-18

 

ISSN:0022-5355

 

年代: 1971

 

DOI:10.1116/1.1315396

 

出版商: American Vacuum Society

 

数据来源: AIP

 

摘要:

This report discusses results from melting with water-cooled nonconsumable electrodes since their introduction to the industry at the 1969 Vacuum Metallurgy Conference in Pittsburgh. In production these electrodes have proven to be attractive for the first melting of titanium sponge and scrap directly into remelt electrodes thereby avoiding the electrode fabrication step previously required. They have also been applied to reclamation of small superalloy scrap directly into forgeable ingot avoiding the two-step practices of air induction melting followed by consumable melting and are currently being used to replace the graphite electrode melting and casting of uranium carbide fuel rods. Experiments reported in this paper were conducted to determine the application of the nonconsumable melting technique to some of the many problems in scrap recovery and the casting industry. For example, we have investigated isolation of high density inclusions from titanium scrap, elimination of low density inclusions, effect of superheating on metal fluidity in casting, and the operation of nonconsumable electrodes at low pressure.

 

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