Project Processing

A “7-tank process” is simply a process where parts are immersed in seven tanks sequentially. Normally, a zinc phosphate process is done in 7 steps while the simpler iron phosphate pre-treatment process is done in 3 steps or sometimes 5 steps.
Phosphating is the process of converting a steel surface to iron phosphate. This is mostly used as a pre-treatment method in conjunction with another method of corrosion protection. A layer of phosphate coating typically includes iron, zinc or manganese crystals.
The standard film thickness for a standard powder coating for optimum mechanicals is between 60 and 80 microns (~2-3 mils).

Normally, powder coating has a slick surface which does not allow paint to stick. Sanding it down carefully will enable you to paint on it effectively. Wipe down the area you will be painting with an appropriate solvent cleaner.
One of the biggest benefits of powder coating is that the coatings themselves are extremely safe to use and handle. All of the powders used in powder coating processes are non-toxic, non-volatile and completely safe, whether they’re being sprayed or simply sitting in one spot.
The powder–coat process entails the application of electrostatically charged particles onto the surface of the substrate. In a typical powder–coating system, a feeder unit delivers the powder to an electrostatic gun. The feeder unit also controls the flow of powder to the gun.