Supersonic Flame SprayA high-velocity flame stream formed by the combustion of hydrocarbon gases with high oxygen in a combustion chamber or specialized nozzle, with a flame flow velocity of 5 Mach (1,500 meters per second). Supersonic flame velocities are high, yet the temperatures are very low.

SupersonicFlame SprayIt is a novel thermal spray technology invented by Braun of the United States in 1981. The core of the High Velocity Oxygen Fuel (HVOF) equipment is the spray gun, which consists of three parts: the combustion chamber (capable of fully heating and accelerating the spray material particles), the Laval nozzle (capable of accelerating the flame flow to supersonic speeds), and the isometrically cross-sectional long nozzle (capable of fully heating and accelerating the spray material particles).

For tungsten carbide-cobalt hard alloys, effective control of tungsten carbide decomposition during the coating process is achievable. The coating boasts high bonding strength, excellent density, and superior wear resistance. Its wear resistance is significantly greater thanPlasma SprayCoating, equivalent to explosion-sprayed coating, also exceeds hard chrome electroplating and spray welding layers. Widely applicable.

Before flame spraying, it's essential to understand the actual conditions and technical requirements of the part to be sprayed, then analyze and determine the coating thickness. Generally, processing must be done after flame spraying, so the coating thickness must maintain sufficient machining allowance and consider thermal expansion and contraction during spraying. Measurement of the coating material. The selection criteria are that the coating material should meet the material, matching, technical, and working conditions of the part to be sprayed.

Select the bonding and work layer materials to determine parameters: pressure, powder particle size, and corresponding movement speed within the components. Supersonic flame spraying with low oxygen content and moderate temperature, high flame rate, can reasonably prevent oxidation and decomposition of the powder coating, making it particularly suitable for applying highly wear-resistant carbonitride coatings.