High velocity oxy-fuel spraying is used for example for rollers in the photographic industry and components used in petrochemical and chemical machinery such as pumps, valves, ball valves and mechanical seals. In HVOF, gas burns continuously at high pressure inside a combustion chamber, the powdered spray additive being introduced in the central axis. The high velocities of the spray particles result in extremely dense spray coatings with excellent adhesion.
Due to the moderate temperatures used, the spray material is only slightly altered metallurgically in the spraying process, meaning that the volume of mixed carbides formed is minimal. In this method, extremely thin coatings are produced with high dimensional accuracy. Propane, propylene, ethylene, acetylene and hydrogen can be used as oxy-fuel gas.