APS and HVOF Coating Services for Turbine Parts

Application:

Creating resistance to wear and corrosion in wellhead equipment


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Product Introduction:

Coating turbine parts, especially hot parts, is very important due to exposure to high temperature, thermal and mechanical stresses, as well as highly corrosive environment and hot oxidation and corrosion phenomena. In general, these coatings consist of two sections: the bondcoat section and the topcoat section.

Applying these two types of coating on the hot parts of gas turbines is done by atmospheric-plasma spraying (ASP: Air Plasma Spray) and high-velocity oxygenfuel spraying (HVOF: High Velocity Oxy Fuel). Atmospheric plasma spraying (APS) is generally used for coating ceramic materials or cermet compounds that have a high melting point; In this method, due to the extremely high temperature of the plasma flame (about 30,000 degrees Celsius) and the gas pressure, the necessary conditions are provided for melting the refractory particles and throwing them at a high speed towards the surface of the piece. But in the HVOF process, a combination of oxygen with different types of fuels such as hydrogen, propane and kerosene is used. Fuel and oxygen are mixed together in a certain ratio and come out of the mouth of the gun with high pressure and speed after combustion.

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Type

This product is final B2B service.

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