Abstract
The Plasmare melting process employs a highly stable, direct current, transferred arc emanating from a non-consumable electrode to melt and process metals and alloys. The rate of power delivery and the point of application of arc heat are under the complete control of the process user. Operation of the Plasmare in an argon atmosphere results in a clean uncontaminated source of heat, permitting precise control over metal bath chemistry. Preliminary evaluation of AISI 4340, A-286, Rene 41, and 17-4 PH alloys has shown that the metal is of superior quality with physical properties equal to vacuum-melted material.
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McCullough, R.J. Plasmarc Furnace, A New Concept in Melting Metals. JOM 14, 907–911 (1962). https://doi.org/10.1007/BF03378203
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DOI: https://doi.org/10.1007/BF03378203