High
Velocity Oxy Fuel (HVOF) systems were developed in order
to produce coatings with superior bond strength, higher density
and higher hardness than other spray processes. Using HVOF, an oxygen-fuel
mixture is continuously fed under pressure into a combustion
chamber where gases are ignited and channeled into a nozzle.
Material is introduced axially or radially into the combustion
stream and accelerated onto the substrate at velocities up to
7000 feet per second.
