Electric heating – Metal heating – By arc
Patent
1981-01-28
1983-06-21
Reynolds, B. A.
Electric heating
Metal heating
By arc
219 75, 219 7616, 219121PQ, 3132314, B23K 2800, B23K 900
Patent
active
043895590
ABSTRACT:
The invention contemplates a plasma-transferred-arc torch construction wherein, optionally, a single releasable clamp enables rapid separation of downstream-end fittings of an anode subassembly and a cathode subassembly, as for inspection, servicing and/or replacement; in an alternative option, release of the single clamp enables rapid further disassembly of the entirety of the respective subassemblies from mounting structure which includes the single clamp. These options are available for torch structure incorporating provision for sealed independent fluid-flow supplies of (a) coolant serving both electrode subassemblies, (b) plasma gas serving an annular interelectrode gap at the downstream end of the torch, (c) a metallic, ceramic or other powder fluidized in a carrier gas, for torch-deposition of the powder, and (d) a shielding gas to protect the zone of plasma-transfer of the arc and any powder conveyed therewith.
REFERENCES:
patent: 3450926 (1969-06-01), Kiernan
patent: 3641308 (1972-02-01), Couch, Jr. et al.
patent: 4055741 (1977-10-01), Bykhousky et al.
patent: 4140892 (1979-02-01), Muller
patent: 4311897 (1982-01-01), Yerushalmy
American Welding Society, Welding Handbook, Seventh Edition, vol. 1, "Fundamentals of Welding", 1976, pp. 11-12.
Romero Eduardo
Rotolico Anthony J.
Eutectic Corporation
Keve Alfred S.
Reynolds B. A.
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