Tungsten carbide spraying on impeller

Tungsten carbide spraying for impellers is the use of tungsten carbide spraying equipment to spray a layer of tungsten carbide coating on the metal surface. The sprayed tungsten carbide coating after processing mainly plays a role in high hardness and wear resistance. The hardness of the coating after tungsten carbide spraying is not related to its thickness, but directly related to the length of time it stays in the high temperature range.

The method of spraying wear-resistant coating on impeller tungsten carbide is to use HVOF to spray cobalt based tungsten carbide alloy powder or nickel based tungsten carbide alloy powder. The theoretical hardness of tungsten carbide spraying processing can reach 65-70HRC, which is the theoretical hardness achieved by domestic spraying technology. Spraying tungsten carbide on the sealing surface will also increase the technical difficulty of polishing. It is recommended to use diamond grinding paste for polishing. If the sealing surface is a hard seal, the tungsten carbide coating will be affected after multiple openings.