Fluorine lined with tungsten carbide coating

Bushings are matching parts used outside mechanical components to achieve sealing, wear protection, and other functions, while tungsten carbide is a compound composed of tungsten and carbon, with high hardness, good wear resistance, and stable chemical properties. Spraying tungsten carbide on the surface of the liner can significantly improve its wear resistance, corrosion resistance, and service life.

Tungsten carbide spraying technology

1. Equipment preparation: Clean the surface of the liner and place it on the spraying equipment.

2. Base coating: Spray a layer of base material on the surface of the liner to increase the adhesion between the tungsten carbide coating and the liner base, preventing the coating from separating from the base.

3. Tungsten carbide coating: Spray tungsten carbide material onto a substrate coating, and after high-temperature sintering, form a hard coating.

4. Post treatment: Clean and polish the coating to ensure a smooth and consistent surface.

Performance characteristics of lining tungsten carbide spraying equipment

1. High hardness and wear resistance: The hardness of tungsten carbide is similar to that of diamond. After spraying on the surface of the liner, it can significantly improve the wear resistance of the liner and extend its service life.

2. Corrosion resistance: Tungsten carbide has stable chemical properties and is insoluble in water, hydrochloric acid, and sulfuric acid. After spraying on the surface of the liner, it can improve the corrosion resistance of the liner.

3. High temperature stability: Tungsten carbide coating can maintain stable performance in high temperature environments and is suitable for lining in high-temperature working environments.

4. Good lubricity: The tungsten carbide coating has a smooth surface, which can reduce friction coefficient, wear and energy consumption.

Application fields of tungsten carbide spray coating liner

1. Aerospace: In the aerospace field, the engine is the core power component of the entire aircraft, with high performance requirements for the parts. Tungsten carbide sprayed liners are widely used in aviation engine components such as bearing sleeves, compressor stator blades, and aircraft landing gear components such as inner cylinders, struts, and rocket thrust chamber liners due to their high temperature resistance, corrosion resistance, and other properties.

2. Automotive industry: In the automotive industry, automotive components such as engine cylinder inner wall coatings need to have low friction coefficients, low wear, and good thermal shock resistance. Therefore, tungsten carbide spraying technology is often used to improve the wear resistance and service life of automotive engine components, transmission synchronizing rings, and brake discs.

3. Shipbuilding industry: In the field of shipbuilding, tungsten carbide spraying technology is often used to improve the wear resistance and corrosion resistance of secondary high-pressure turbine blades and other components used in ship gas turbine engines.

4. Petrochemical industry: In the field of petrochemical industry, the failure of tools used for oil extraction mainly comes from two body wear, three body wear, erosion and corrosion. Tungsten carbide spraying technology can improve the wear resistance and corrosion resistance of these tools, extending their service life.

Precautions

1. Spraying process: The tungsten carbide spraying process requires strict control of spraying parameters, such as spraying speed, spraying distance, spraying temperature, etc., to ensure the quality and performance of the coating.

2. Coating thickness: The thickness of tungsten carbide coating should be determined according to specific application scenarios and requirements. Being too thick or too thin may affect the performance and service life of the coating.

3. Base material: The base material of the liner should have good compatibility with the tungsten carbide coating to ensure the adhesion and stability of the coating.