Pre-treatment

PRETREATMENT PROCESS:

General Metal Finishing is using the iron phosphate pretreatment. Iron phosphate  conversion coating is a very important pretreatment process, adding significantly to the performance of the finish coating. A phosphate coating converts the metal substrate to a uniform, inert surface, which improves bonding, minimizes the spread of oxidation if the coating is scratched and improves the over-all  resistance of the component. Parts are subjected to an acidic bath and a chemical conversion forms in a complete film on the part of the surface, changing the chemical and physical nature of the metal surface.