High Velocity Oxygen Fuel
High Velocity Oxygen Fuel (HVOF) coating is a thermal spray coating process that is used to improve or restore a component’s surface properties or dimensions, thus extending equipment life by significantly increasing erosion and wear resistance, and corrosion protection.
The HVOF coating process efficiently uses high kinetic energy and controlled thermal output to produce dense, low porosity coatings that exhibit high bind strengths, some of which exceed 83 MPa (12,000 PSI), low oxides and extremely fine as-sprayed finishes. The coatings have low residual internal stresses and can be sprayed to a thickness not normally associated with dense, thermal and spray coatings. This process uses an oxygen-fuel mixture. The coating material is in powdered form. The fuel gas is mixed with oxygen, ignited and creates sub-sonic gas velocities as the flame leaves the barrel. The ignited gases form a circular flame configuration that surrounds and uniformly heats the powdered spray material as it exits the gun and is propelled to the work piece surface.
For a specialist surface engineering solution for your business, whether in the mining, heavy engineering, mechanical engineering sector, contact New Metal Surfaces today.