Process of plasma arc welding and forming low oxide coatings using a plasma arc apparatus with a environmental cell having a ring with fluid passageways

A local environmental cell (10) for a welding spray gun (14) includes an annular ring (12) having a top surface and a bottom surface, wherein the annular ring (12) is adapted for attachment to an outer perimeter of the spray gun (14) and a plurality of fluid passageways (20) radially disposed about...

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Bibliographische Detailangaben
Hauptverfasser:	FUSARO, ROBERT ANTHONY, JR, SOLOMON, HARVEY DONALD
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS BLASTING CHEMICAL SURFACE TREATMENT CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY ENGINE PLANTS IN GENERAL HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MACHINE TOOLS MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES NOZZLES PERFORMING OPERATIONS PLASMA TECHNIQUE PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS SOLDERING OR UNSOLDERING SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL STEAM ENGINES SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A local environmental cell (10) for a welding spray gun (14) includes an annular ring (12) having a top surface and a bottom surface, wherein the annular ring (12) is adapted for attachment to an outer perimeter of the spray gun (14) and a plurality of fluid passageways (20) radially disposed about the annular ring (12) comprising a plurality of openings in the bottom surface of the ring (12) in fluid communication (18) with a vacuum source for providing a vacuum thereto. The use of the local environmental cell (10) permits deposition of local bond coats as well as minimizes the number of steps associated with welding repair processes. For example, the use of the local environmental cell (10) permits welding and formation of a low oxide bond coat during the welding process, thereby eliminating the need for placing the substrate (30) subsequent to a welding process in a separate spray cell to deposit the bond coating.