With the plastic coating either the surface of the product is beautified or the resistance to aggressive media is increased significantly.
The big advantage is that you can apply a thicker layer than, for example, when paintwork.



During plasma nitriding, a thin layer in the µm range is formed on the surface, which is very hard, for example to minimize wear due to friction.

This method is suitable when a part should retain its elasticity, but should be very hard on the contact surfaces.



When brownig, the workpiece is first heated strongly (400 to 700 °) and then quenched with oil, so a black Protective layer forms on the surface. It either serves as a protection against corrosion, although the protection is not particularly good, but can be improved by applying oil or fat.

It is also used to create a primer for subsequent paintwork.

In the case of powder coating, a galvanic pretreatment is carried out first. This is used for cleaning and the application of a layer that serves as an adhesion promoter.
The powder coating is then applied electrostatically. To then be liquefied at a temperature between 150 and 200 °. Powder coating is much more resistant than a wet paintiwork.
Because the powder coating does not contain any solvents, the ambient air is relatively emission-free.

In wet paintwork, liquid paint is applied to the workpiece using compressed air, thinner and a spray gun. Then it is often dried for a long time under the influence of temperature.
What unfavorable during processing is, that the solvent passes into the air because it is very volatile, so protective equipment must be used.
The big advantage is that damage that is repaired is almost invisible.