Definition - What does Fused Coating mean?
Fused coating is a form of thermosetting powder. It is typically applied on pipelines and other industrial structures. It has been an established protection method for many years, and its application guarantees corrosion protection throughout the entire length of the pipeline or structure.
It is described as a heat curing polymer coating and classified as a protective coating in paint nomenclature. This method is known as fused coating due to crosslinking resin, and its application is different from traditional paint. The hardener and resin components in fused coatings remain unchanged at normal conditions for storage.
Corrosionpedia explains Fused Coating
Fused coatings are composed of four essential elements:
Normally, all of these elements are dry solids, even though small amounts of liquid extenders are added in its formulation.
Fused coatings are very beneficial in various industrial settings, as they offer protection from:
Fused coatings are usually applied with the aid of gas and oxygen application. When the necessary coating depth has been reached, the coating is fused into the substrate object using a gas torch. The typical temperature required for fusing is about 1040° to 1120°C. In this high temperature, the fused coating undergoes partial melting and initiates a reaction with the base in order to form a highly dependable metallurgical bond which is comparable to various welding types.
This type of coating carries hardness ranging from Rc30 up to Rc65. Industries that make use of shafts, pump sleeves, rotors and bodies typically gain the most benefit from this type of coating material.