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Abstract

Plasma melting is a material-processing technique in which the heat of a thermal plasma is used to melt a material. This article discusses the two typical design principles of plasma torches in the transferred mode: the tungsten tip design and the hollow copper electrode design. It briefly describes the sources of atmospheric contamination in plasma melting furnaces and their control measures. The equipment used in plasma melting furnaces are also discussed. The article provides a detailed discussion on various plasma melting processes, such as plasma consolidation, plasma arc remelting, plasma cold hearth melting, and plasma casting.

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Robin Lampson, Todd Telfer, 2008. "Plasma Melting and Heating", Casting, Srinath Viswanathan, Diran Apelian, Raymond J. Donahue, Babu DasGupta, Michael Gywn, John L. Jorstad, Raymond W. Monroe, Mahi Sahoo, Thomas E. Prucha, Daniel Twarog

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