The technology and function of boiler spraying?

       Keywords on this page: boiler furnace spraying, thermal spraying, boiler anti-wear spraying, boiler anti-corrosion spraying, supersonic arc spraying, boiler heating surface anti-wear anti-corrosion, boiler water wall anti-wear spraying, deflector anti-wear, anti-wear plate installation , Boiler deflector installation, longitude and latitude anti-wear

1. Rust, paint coating, etc., the surface shows a uniform metallic luster to facilitate the adhesion and adsorption of the molten powder and the surface of the substrate (the dissolution and diffusion of molecules). The cleanliness of the working surface reaches the Sa3.0 level specified in GB8923-88 "Steel Surface Corrosion Grade and Derusting Grade before Coating". 2. Roughening the surface: The combination of the thermal spray coating and the substrate is mainly mechanically combined, which requires the pretreatment of the substrate not only to remove oil and rust, but also to roughen the surface, and the use surface has a certain roughness. The surface roughness reaches RZ50-90μm specified in GB11373-89 "General Rules for Thermal Spray Metal Pretreatment". In the process of using the boiler, the reason why the boiler needs to be sprayed and the reason why the boiler is painted is because the boiler action is carried out under high temperature and high pressure, which has the corrosion of salt battery and the corrosion of oxygen in the water body. Therefore, in order to prevent the boiler from being corroded, it is necessary to spray paint to ensure the long service life of the boiler. The boiler generally does not need to be cooled, but needs to be warmed up. Therefore, it will not use a cooling tower unless it is a power plant boiler, but the cooling tower is not used to cool the boiler. Spraying means adding a layer of original film on the boiler to separate the metal from the medium, protect the boiler and prolong its life. In the actual operation of boiler spraying, it has achieved more than the effect of the enterprise's imagination. It not only improves the service life of the boiler, delays the replacement time, but also greatly reduces the cost of boiler maintenance and maintenance, which is undoubtedly a good news for the enterprise.