High Velocity Oxygen Fuel (HVOF) is a process to apply very dense, strongly adhered coatings.
A fuel (commonly kerosene or hydrogen) is mixed with oxygen and ignited in the combustion chamber. The combustion gases are accelerated through a nozzle. Powder is introduced into the gas stream where it softens and gathers speed before coating onto the sprayed surface.
These coatings are commonly used as a hard chrome replacement process and produce very dense, hard wearing coatings.
Metallisation offers two variants of HVOF Pistol Control Consoles to operate either liquid fuel or gas fuel pistols. We also offer our own liquid fuel gas pistol.
The HVOF process produces high dense coatings, high bond strength, and lower porosity compared to other thermal spray methods. It also results in better wear resistance and corrosion protection, making it ideal for extending the life of components in harsh environments.
HVOF coatings are commonly used for wear resistance, corrosion protection, and restoring dimensions of worn parts. Typical applications include turbine blades, valve components, pump shafts, and landing gear parts, among others, in industries requiring high performance and durability.
While HVOF coatings can be applied to a wide range of substrates, the material and condition of the substrate must be suitable for thermal spraying. The substrate must be able to withstand the heat of the process without degrading, and surfaces usually need to be pre-treated (e.g. cleaned and roughened) to ensure good adhesion of the coating.
