Supersonic Flame SprayA high-velocity flame jet 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 new thermal spray technology invented by Braun of the United States in 1981. The core of the High Velocity Oxygen Fuel (HVOF) spraying equipment is the spray gun, which consists of three parts: the combustion chamber (which can fully heat and accelerate the spray material particles), the Laval nozzle (which can accelerate the flame flow to supersonic speed), and the isometrically long nozzle (which can fully heat and accelerate the spray material particles).

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

Prior to flame spraying, it's necessary to understand the actual conditions and technical requirements of the part to be coated, then analyze and determine the coating thickness. Generally, machining must be done after flame spraying, so the coating thickness must account for machining allowances and consider thermal expansion and contraction during application. Measurement of the coating material. The selection criteria are that the coating material should meet the material, matching, technical, and working condition requirements of the part to be coated.

Select materials for the bonding and work layers 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 speed, can reasonably prevent oxidation and decomposition of the powder coating, making it particularly suitable for applying highly wear-resistant carbonitride coatings.