Providing high quality and expert powder coating services across the Midlands and beyond.

Final Preparation before coating;

The word for bits of dust or particles in a Powder Coated surface is Inclusions. These are dust or other residues that are on the surface of the metal after degreasing or pre-treatment or they are airborne dust and particles that have landed on the work in the Powder Coating Facility at some point between Degreasing/pre-treatment and getting to the production line.

It is advisable to remove these prior to coating if you want to achieve a smooth inclusion free powder coated surface.

The usual way is to wipe the parts with a clean cotton rag, form the rag into a small pad by folding the edges in because bits of cotton can come away from the edge of the rag.

Wipe the component that you are going to coat all over, with parts that have been degreased there is sometimes a layer of light dust on the surface, wiping will remove these small particles.

After wiping if you are not going to coat them straightaway then make sure you place them on the preparation bench with the most important faces that need the best finish facing upwards, placing what is called the A face ( i.e most important face ) onto the bench can result in residues off the bench sticking to the surface and causing inclusion problems after coating.

Just prior to powder coating the part to be coated is either hung up using a wire hook or in the case of longer/larger items more than one hook. If not hung up individually parts are sometimes loaded onto Jigs, these are metal frames that have a series of hooks or contacts welded to them so that more than one part can be hung up.

It is advisable just prior to coating when the part/parts are hanging in the spray booth to blow off the parts with a fairly light jet of compressed air. You have to be careful not to dislodge the parts or cause to much turbulence in the spray booth and disturb dust or contamination that may land on the work. A light blow off on each component will remove any final bits of dust and contamination that may be remaining on the surface.