Title: Method of operating a batch type annealing furnace using a plasma heat source

Abstract: A method for heat treatment, i.e, annealing or softening, of metal materials in the nature of coiled rod, wire, strip sheet, and the like, utilizes a conventional batch type furnace with a controlled atmosphere heated by an electric arc source, i.e., a plasma generator.

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Inventors: Camacho, Salvador L. (Raleigh, NC, US)
Magor, James K. (Durham, NC, US)

Application Number: 480235
Filing Date: 1974-06-17
Publication_date: 1976-09-14
Assignee:
Primary Class(es): 75/10.19 373/23
Other Classes:
US Patent Ref:

3013315	Dec, 1961	Smith	75/65.
3480426	Nov, 1969	Neuenschwander	75/10.
3771585	Nov, 1973	Ulrich	75/10.
3852061	Dec, 1974	Wulff	75/10.

Other Refs:
Primary Examiner: Rosenberg, Peter D.
Assistant Examiner:
Attorney: Olive; B. B.