Benefits and uses of HVOF coating

1. Benefits and uses of HVOF coating High-Velocity Oxygen Fuel HVOF coating is a thermal spray coating procedure intended to enhance or restore a component's surface characteristics or dimensions. This process increases corrosion protection, erosion resistance, and wear resistance dramatically, prolonging the lifespan of the equipment. By using a high-temperature, high-velocity gas stream to spray molten or semi- molten materials onto the surface, a thick spray coating that can be ground to an extremely high surface finish is created. The application of coating materials such as metals, alloys, and ceramics with the help of the HVOF coating technology results in a coating with extraordinary hardness, remarkable adherence to the substrate material, and significant wear resistance and corrosion protection. What is the HVOF process used for? HVOF is widely recognized in a variety of demanding sectors with applications in very harsh conditions, including the oil and gas sector, the steel industry, power generation, valves and pumps, and the replacement of hard chrome. To achieve a high level of surface smoothness, HVOF generates highly thick, durable coatings that can be typically silicon carbide ground or, in certain situations, require diamond grinding or polishing. Benefits of implementing HVOF coating

2. In severely demanding situations, the denser coatings deposited by the HVOF technique often allow for greater performance in the protection against both corrosion and erosion. HVOF coatings, which guard against corrosive crude oil/water and the erosion of mud and sand combined with the oils, can last up to 10 times longer than conventional hard chrome-plated valves in the oil and gas sector, for instance. This is why HVOF coating is considered a high-standard coating. Research has shown that HVOF coating lasts really long and much longer than traditional coatings even in adverse weather conditions. The extraordinary wear characteristics of the coatings are due to the exceptionally hard-wearing Tungsten Carbide particles that may be very firmly embedded/retained in the coating due to the structure of the coating. The component/substrate temperature is kept to a minimum so that the process remains metallurgically cold (it doesn't heat the substrate to a level that changes its metallurgical structure). HVOF coating could be extremely hard (up to 1400 HV), very dense, with low porosity levels of 1%, and a very high bond strength >80MPa. To possibly salvage and enhance existing components, apply high-performing, specialized materials to lower-quality ones. These materials can also be used to improve wear resistance on surfaces, lengthen the lifespan of a component, or fight off corrosion, high temperatures, erosion, and cavitation. In situations where environmental regulation regarding the use of hexavalent chromium in the chrome plating process has caused several plating businesses to look for alternatives to the conventional chrome plating process, the HVOF method is frequently used to substitute chrome plating. In some situations, the HVOF spraying of Tungsten Carbide based alloys can provide wear characteristics that are up to 10 times better than those of a chrome- plated surface while also achieving good hardness and performance for sliding wear applications and corrosion resistance.

3. While hard enough to require grinding, tungsten carbide coatings are more comparable to hard chrome plating. HVOF methods provide coatings that are not only thick but also considerably smoother. This is a result of the procedure producing less residual stress and a higher impact velocity. Endnotes Overall, because of their improved quality, which is difficult to accomplish with thermal spray coatings or other types of procedures, HVOF coatings are employed in a variety of sectors and industries. IMC manufactures HVOF coating guns as per the current industry standard. Their products have wide-ranging applications in different industries such as aviation, automotive, building and construction, heavy engineering, and electrical and electronics.