Air cooled, high-performance Supersonic Air Fuel spray gun.

Mach 3 particle velocity Accurate measurement and control of in-flight particle temperature with optional JetMaster™ system Hardness of WC-based coatings applied with common brands of agglomerated and sintered powder is increased to over 1400 HV300 Negligible oxide content (typically 1.5-2 times the oxide content of feed stock material) Compressive residual stresses in coatings Porosity is typically not detectable (not measurable) Non-clogging nozzles Axial powder injection Highly Efficient 100% Air Cooling (no water) 100% duty cycle, indefinite continuous operation Multiple nozzle configurations provided for different coating materials Low operating cost Low consumption of spare parts Not sensitive to operator error Instantaneous start/stop

Powder Types Carbides Hardfacing Alloys Metals Supported Fuels Propane Propylene MAPP Gas Air Consumption 250 SCFM @ 125 PSI Particle Velocity 3300-4000 ft/sec 1000-1200 m/sec Typical D.E. Carbides 50-72% Metals 60-85% Max Spray Rate (per hour) Carbides 65 lb (30 kg) Metals 50 lb (23 kg) Use Options Robot Mounted

The new M3 is the first spray gun to use Supersonic Air Fuel technology (patent pending) to deliver particle velocities in excess of 1000-1200 m/sec, approximately double the velocity of previous models such as the M2 and SB9500. Higher kinetic energy of solid particles produces higher contact pressures upon impinging the substrate, leading to better adhesion to substrate and cohesion within the coating. The result is a marked improvement in the physical and mechanical properties of the sprayed coatings. For instance, the hardness of WC86-Co10-4Cr coatings applied with agglomerated and sintered powder is increased to over 1400 HV300, a 27-32% improvement compared to AC-HVAF coatings. Electrical conductivity of copper coating applied with M3 exceeds that of coatings applied with Cold Spray. Due to practically non-existent porosity, corrosion resistance of M3 coatings used for hard chrome replacement is actually better than that of hard chrome plating.

The particle temperature monitor JetMaster™ that comes integrated with the M3 accurately measures in-flight particle temperature during spraying, eliminating all guess work from coating application and making it easy to set the correct gas parameters. Exceptionally consistent coatings are possible with complete repeatability. The M3 applies superior coatings with WC-based (-30+5µm) and Cr3C2-based (-38+5µm) powders, while it is also able to accommodate HVOF cuts with DE of up to 66% and 72% respectively, and materials with lower melting points (copper, aluminum, babbitt).

Read more about AC-HVAF and Supersonic Air Fuel processes.

Common Name	Powder Type	Composition, wt.%	Particle Size	Hardness HV300	DE, %
Tungsten carbide-cobalt-chrome	Agglomerated and Sintered, Spherical	Co-10 Cr-4 WC-balance	-30 + 10µm	1430-1500	50-55%
Tungsten carbide-cobalt-chrome	Agglomerated and Sintered, Spherical	Co-10 Cr-4 WC-balance	-45 + 10µm	1270-1350	60-66%
Tungsten carbide-cobalt	Agglomerated and Sintered, Spherical	Co-12 WC-balance	-30 + 5µm	1280-1340	50-55%
Tungsten carbide-chrome carbide-nickel	Agglomerated and Sintered, Spherical	Ni-7 Cr3C2-20 WC-balance	-25 + 5µm	1270-1400	52-56%
Chrome carbide	Agglomerated and Sintered, Spherical	Ni-25 Cr3C2 -balance	-38 + 5µm	950-1020	72-75%

DE data is based on common powder brands, contact sales for DE data for specific powder manufacturers.