Pre-Treatment - What is it?

The process of chemical preparation, followed by corrosion resisting coatings on metal and aluminium substrates.

Pretreatment of the surface before powder coating is vital for ensuring quality and long lasting results.  It is literally the key to the successful performance of the finished powder coated product. It is dependent on the materials of construction, its design, the pre-treatment, the coating system and the working environment.

Powder Coating Services has extensive on site pre-treatment facilities for a range of metals and forms whether it comes in sheet, tubular or manufactured form. It is essential that standards and consistency are maintained in processes and product performance.

With many years of experience from the field, our own testing and weekly extensive laboratory testing, maintaining close relationships with pre-treatment and materials suppliers, enables us to offer the latest, most appropriate pre-treatment and coating systems for customer product.
 

Immersion in pre-treatment tanks chemically reacts with the metal and converts the surface layer to an integral and flexible non-metallic barrier consisting of a complex mixture of aluminium chromate, phosphate and fluoride depending on the process used. The chemical conversion which adheres very strongly to the surface provides an excellent key for the finished powder coated product. The chemically converted layer is insoluble and inhibits the start and spread of corrosion even from layers which have suffered before or after powder coating. Awkward large product form can also be accommodated with a top of the range
anti-corrosive spray polyetch product that has excellent adhesion to all metal products including galvanised steel, ferrous and non-ferrous metals.