Powder Coating
Aluminium
The procedure for coating aluminum extrusion and products consists of a pretreatment process where the material is acid dipped to remove any surface contamination and then dipped in a chromicoat solution specifically designed to prevent corrosion and maximize adhesion.
Steel
Steel products are pretreated by way of abrasive blasting to remove any surface contamination and to allow maximum adhesion. A zinc powder primer can be used in the case where a product is exposed to atmospheric conditions giving a degree of protection from rust and corrosion. Products being used in the chemical industry prior to powder coating can be primed with an Epoxy primer which will assist in preventing corrosion from chemical contamination over extended use.
Once properly pre-treated the products are coated with a powder using electrostatic application equipment and placed inside an oven which bakes at approximately 200 degrees Celsius. This initiates a chemical reaction to occur which causes the powder molecules to cross link giving the coating its unique properties.
The significant advantage of powder coating is once the material has cooled it has reached its maximum hardness and can in the case of an industrial application be ready for immediate assembly thus having a cost saving effect on production and transport times.
The process of powder coating is a simple process giving long term protection without the need for ongoing maintenance and repainting over extended periods, especially where the product is exposed to outside elements and atmospheric conditions.