Plasma torch with corrosive protected collimator

Details Plasma torch with corrosive protected collimator Plasma torch with corrosive protected collimator

H - Electricity

05

H

H05H 1/34 (2006.01) B23P 15/00 (2006.01) B23P 17/04 (2006.01) B23P 23/04 (2006.01)

Patent

CA 2623169

To protect the collimator of a transferred plasma arc torch from premature failure due to corrosion, an anti-corrosive covering is applied on the exposed face surface and a portion of the inner exit bore of the collimator. The specification describes several methods for producing the collimator for a plasma torch having an anti-corrosive coating or cladding on the exposed surfaces thereof, including electroplating, electroless plating, flame spraying, plasma spraying, plasma transferred arc, hot isostatic pressing and explosive cladding.

Selon l'invention afin de protéger le collimateur d~une torche à arc de plasma transféré des pannes prématurées dues à la corrosion, un revêtement anticorrosif est appliqué sur la surface avant exposée et une portion du perçage de sortie interne du collimateur. La spécification décrit plusieurs procédés de production du collimateur pour une torche à plasma comportant un revêtement ou un placage anticorrosif sur sa surface exposée, y compris la finition galvanique, le placage autocatalytique, la projection à la flamme, la projection au plasma, l~arc transféré au plasma, la pression isostatique à chaud et le placage par explosion.

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