Boiler Tubes
The application of a Metal Sprayed coating can considerably enhance the life and efficiency of boiler tubes that are subjected to high heat levels, erosion, corrosion and heat cycling. Boiler Water Wall Tubes, Super Heater Tubes, Boiler Components in the burner area as well as high temperature furnace components are all subject to thermal sprayed coatings.
The Arc Spray and HVOF applied coatings has provided this protection.
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Some boilers have high sulphur content that warrants the use of Ni Cr based material, if the ash content is high - a high hardness Arc Spray coating is needed. Another popular material is a Chrome Carbide Nickel Chrome applied using the HVOF technique which can operate up to 870°C with good corrosion, abrasion, particle erosion and hot gas resistance and also has a high hardness characteristic.
