Gas shrouded electrode for a plasma carburizing furnace

Details Gas shrouded electrode for a plasma carburizing furnace Gas shrouded electrode for a plasma carburizing furnace

1989-11-24

1991-10-22

Paschall, M. H.

Electric heating

Metal heating

By arc

55120, 174 153, 373114, 21912143, 21912136, B23K 900, H01B 1726

Patent

active

050597574

ABSTRACT:
An electrode for a plasma carburizing furnace is disclosed which is adapted to provide a dynamic gas shroud for inhibiting the buildup of carbon soot on the insulating elements of the electrode. The reduction of carbon soot buildup on the insulating components dramatically reduces the frequency of electrical short-circuits across the insulating component, thereby increasing the availability of the furnace for processing of workpieces.

REFERENCES:
patent: 1264674 (1918-04-01), Molles
patent: 1905751 (1933-04-01), Rankin
patent: 3305619 (1967-02-01), Molstedt et al.
patent: 3809794 (1974-05-01), Jacobs
patent: 4587458 (1986-05-01), Davenport et al.
patent: 4608698 (1986-08-01), Molle et al.
patent: 4760584 (1988-07-01), Jones
Plasma Carburizing-Facility Design and Operating Data, Graham Legge, Industrial Heating (Mar., 1988).

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