process description the combustion wire spray process employs a set of drive rolls powered by an air turbine or an electric motor to draw a metal alloy wire through the combustion spray gun. at the gun nozzle, fuel gas of......process description the combustion wire spray process employs a set of drive rolls powered by an air turbine or an electric motor to draw a metal alloy wire through the combustion spray gun. at the gun nozzle, fuel gas of acetylene, propane, hydrogen or mapp is mixed with oxygen in precise volumetric proportions using a siphon plug and ignited to create a flame, which is then shaped at the guns air cap by compressed air. the metal wire is fed concentrically into the flame, melted and atomized by the compressed air, and the molten droplets are propelled towards a prepared surface where they solidify and bond to the substrate to form a coating. combustion wire spray is a common choice for machine element repair and corrosion coatings. either hard (higher melt temperature) or soft (lower melt temperature) wires can be used. features of the combustion wire spray process: - applies a range of metallic alloys and pure metals for restoration, corrosion coatings and other purposes - configurations from economical manual systems to fully automated production systems are available - can be portable for on-site coatings - high spray rates with low gas consumption - coatings can be machined to final dimensions and finish - masking of areas that should not be coated is possible - coating of internal geometries is possible - very simple to operate and maintain