Powder coating is a mixture of organic and inorganic materials applied by electrostatic spray gun by an air/powder mixture through a nozzle onto a grounded part. The part is then cured in an oven where the powder melts, flows and cures to form a durable and attractive finish.
No, electrostatic powder coating needs to be applied to the article by a spray gun on a coating line. It cannot be applied on site because powder coated article need to be cured in an oven.
No, thermosetting powder coatings need to be made in a factory. For make powder coating there is need of specialised equipment such as an extruder and grider, to make the powder and then grind it to powder form. This means powder coating to be have excellent quality control.
Almost every metal can be powder coated, such as steel, aluminium, iron, magnesium, copper, brass and cast components.
Generally, metal substrates such as aluminium, steel or brass are best suited to powder coating. But It is possible to coat other substrates such as MDF, ceramic and glass. Applying powder to different substrates depends on the process of the applicator.
Surface pre-treatment options may consist of the following:
Powder coating gives long-lasting and most colour durable quality finishes.
Powder coatings are generally a one coat finish application applied to cleaned pre-treated substrates. But metallic powder coatings require a clear coat top coat to protect the metallic effect.
Yes, powder coatings can be applied straight on substrate but you have to provide a clean pretreated surface to achieve best coating properties.
Powder coating has a very hard finish and it's easier to apply than wet paints but powder coatings can not withstand anything and everything. This view gives us some disappointment about the applications of powder coatings. Powder coatings need a clean pre-treated surface like every other coating. Rust from the must be removed prior to powder coating. Powder coatings provide very good resistance to scratch, chemicals and the effects of sun. However, if we did not care about the coating. It can show up scratches and film integrity loss.