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  • THERMAL SPRAY
  • H.V.O.F Coating
  • THERMAL SPRAY

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    H.V.O.F Coating

    Thermal Spray

    H.V.O.F Coating

    H.V.O.F (High Velocity Oxygen Fuel) coating is a method of forming a film by injecting powder into a high-speed jet generated by combusting fuel gas with oxygen together at high pressure spraying it onto a base material. The method greatly improves wear resistance and corrosion resistance through the formation of coatings with low porosity and high bonding strength.
    ▶ PROCESS : MATERIAL INSPECTION → SURFACE ACTIVATION → H.V.O.F COATING → INSPECTION → GRINDING


    • H.V.O.F system

    • Industrial Robot

    Application
    field

    It improves the chemical resistance of facilities in the chemical sector.

    It impoves the corrosion resistance of facilities exposed to sea water environment.

    It improves the abrasion resistance of stirring facilities such as screws.

    Coating
    Materials

    Tungsten Carbide : Recommended for application field on the materials prone to abrasion and have strong adhesion to high density materials.

    Tungsten Carbide - Nickel - Chrome

    Compared to Tungsten Carbide coatings, it has excellent corrosion resisance, making it ideal for application field of sea water such as hydraulic rods.

    Chromium Carbide : It has high fine hardness and increases abrasion and friction resistance without brittleness.

    Process
    Condition

    Types of heat sources : Oxygen + Fuel

    Temperature of heat source : high temperatureConditions(2,700~3,100℃ level)

    Injection Speed: Ultra high speed (above 2,000 m/sec).

    AAdhesion: above 10,000psi

    Base material temperature: below 200℃

    Process
    Characteristics

    Molten particles are sprayed at ultra-high speed to form a fine and even coating. (low material loss, high adhesion, low process rate, high density)

    Higher coating thickness is formed compared to other spraying processes.

    Less thermal deformation of the base materials

    The corrosion resistance and wear resistance are greatly improved.