HVOFsprøyting
HVOFsprøyting, which stands for High Velocity Oxygen Fuel spraying, is a thermal spray coating process used to apply metallic or ceramic coatings onto a substrate. The process involves feeding powder feedstock into a combustion chamber where it is rapidly heated and accelerated by a high-velocity stream of oxygen and fuel, typically hydrogen or kerosene. This high-velocity gas stream propels the molten or semi-molten particles towards the surface to be coated. Upon impact, the particles flatten and solidify, forming a dense, well-bonded coating.
The key advantage of HVOFsprøyting lies in the high kinetic energy of the sprayed particles, which leads