Take you to understand the corrosion resistance and wear resistance of tungsten carbide spray coatings

       In the daily processing of anti-corrosion and wear-resistant coatings on metal surfaces by thermal spraying, we must first understand the service status of the workpiece and the performance of the workpiece surface, and accurately determine the cause of failure of the workpiece, so as to determine the requirements for the coating, including bonding strength, hardness, and thickness



, The number and size of pores, surface accuracy, wear resistance, corrosion resistance, heat resistance or other properties, and tungsten carbide coating is one of the main spray materials. Thermal spraying manufacturers generally use HVOF supersonic flame spraying of tungsten carbide coatings. This thermal spraying process makes the bonding strength of the tungsten carbide coating and the substrate higher, and makes the corrosion resistance and wear resistance of the tungsten carbide sprayed coating more prominent.



The material loss in the general wear process is a complex relationship between many interaction quantities, and the change of a variable can have an important impact on the performance mode of the entire system. When mechanical equipment is in a corrosive environment, its impact speed, impact angle, erosion concentration and erosion characteristics will all affect its behavior.



Cobalt-based tungsten carbide alloy powder or nickel-based tungsten carbide alloy powder and chromium-based tungsten carbide alloy powder are sprayed with HVOF. The hardness can reach HV1200 and can withstand high temperatures of 850 degrees. Carbon and other processes can increase production efficiency by more than 2 times, reduce production costs by more than 50%, and extend service life by dozens of times.



The corrosion resistance and wear resistance of tungsten carbide spray coatings are mainly used in papermaking, railways, machinery, automobiles, steel, petroleum, chemical, printing, aerospace, power and coal industries. Because the tungsten carbide sprayed coating exerts excellent characteristics that are incomparable with conventional and other special treatments, the workpiece has excellent performance, which greatly reduces the downtime rate and improves economic benefits.