Tungsten Carbide Spraying and Processing

Our company provides repair services for worn blade surfaces of fan impellers in cement plants, power plants, wastewater treatment plants, and other facilities, as well as surface enhancement coatings for new impeller blades. These services can extend the service life of impellers by several times.

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Mechanical Equipment Repair Services

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Request for quotation Phone: 020-84836251

Product Description

Tungsten Carbide Coating Description: Our company provides repair services for worn areas on fan impeller blades in cement plants, power plants, wastewater treatment facilities, and other similar environments, as well as surface enhancement coatings for new impellers. These coatings can extend the service life of impellers by several times. We employ a supersonic spraying technique using tungsten carbide to create a dense, highly hard, and exceptionally wear-resistant coating that significantly prolongs the service life of components. The High-Velocity Oxygen-Fuel (HVOF) thermal spray process is specifically designed for wear- and corrosion-resistant treatments on impeller and blade surfaces. This process can be used both for pre-protection of new components and for refurbishing existing ones. The coating hardness can reach above HRC70, with typical thicknesses ranging from 0.15 to 0.20 mm. The coating exhibits a uniform and consistent appearance, free of porosity, and boasts excellent bonding strength. During spraying, the temperature is precisely controlled, ensuring no deformation occurs in the workpiece. This technology is ideal for applications involving particle abrasion, such as power plant fan impellers, pump impellers, and blades. Tungsten Carbide Powder Coatings: Tungsten carbide (WC) is the primary raw material used in the production of cemented carbides and possesses extremely high microhardness. Commonly used WC-based powder coatings include WC8%Co, WC12%Co, and WC17%Co. Adding different proportions of cobalt to WC primarily serves as a binder, enhancing the toughness of the coating while preventing excessive carbon burn-off during the spraying process. Chromium carbide (Cr2C3) features high hardness and excellent resistance to high-temperature oxidation and wear, with a maximum operating temperature of up to 800°C. Typically, Cr2C3 is mixed with Ni-Cr alloys and is mainly applied to high-temperature wear-prone areas. Mechanical Component Wear Repair Process Using Tungsten Carbide Coatings—Tungsten Carbide Wear-Resistant Coating Parameters: Processing Steps: → Sandblasting → Preheating → Primer Application → Tungsten Carbide Spraying (thickness: 0.04–1.0 mm) → Grinding; Processing Methods: Plasma or Supersonic Flame Spraying of Tungsten Carbide Coatings Performance Indicators: Hardness: Up to HRC70–80 Bonding Strength: ≥90 MPa High-Temperature Resistance: Above 1200°C Coating Thickness: 0.04 mm–1.0 mm Service Life: 3–6 times longer than conventional methods Processing Range: Diameter: From tens of millimeters to hundreds of millimeters Length: From a few millimeters to several meters can be processed

New impeller 2