How does the supersonic spraying technology ensure the spraying effect?

       

Applying supersonic spraying technology to the manufacture of in-process parts of mechanical parts can significantly improve the mechanical properties and service life of mechanical parts, meet the requirements of high quality, material saving, environmental protection and energy saving, and can repair the old and make use of waste. good economic benefits. Supersonic spraying has been widely used in cement plants, power plants and other enterprises with wear-resistant equipment.

How does the supersonic spraying technology ensure the spraying effect?



Applying supersonic spraying technology to the manufacture of in-process parts of mechanical parts can significantly improve the mechanical properties and service life of mechanical parts, meet the requirements of high quality, material saving, environmental protection and energy saving, and can repair the old and make use of waste. good economic benefits. Supersonic spraying has been widely used in cement plants, power plants and other enterprises with wear-resistant equipment. This technology has played an increasingly important role in extending the service life of the production equipment of these enterprises, ensuring the normal operation of the equipment and reducing the energy consumption of the enterprise. However, this technique is very operator-intensive and is usually done by experienced technicians to ensure spray results.



Before supersonic spraying of tungsten carbide, the workpiece must be surface cleaned and sandblasted. The spraying material is generally tungsten carbide-12Co, and the mass percentages of tungsten carbide and cobalt are 88% and 12% respectively, which are manufactured by sintering and crushing method. Tungsten carbide has high hardness at room temperature, especially good hot hardness, and the hardness decreases very little at 1000. The supersonic spraying device uses kerosene as fuel, oxygen and compressed air as combustion improver. The control device transports kerosene and oxidant to the spray gun at a certain pressure and flow rate, and is atomized and mixed into a liquid mist by a high-performance atomizing nozzle, and then sprayed into the combustion chamber of the spray gun. The liquid mist is ignited and burned by the spark plug to form high temperature and high pressure gas, which is accelerated to supersonic speed by the Laval spray gun.