Electrophoresis line casting

Common technical parameters of Electrophoresis line casting

Film thickness

The film thickness obtained by electrophoretic coating is not uniform in all parts. It is affected by the quality of the workpiece surface, the conductivity of the bath and the shape of the workpiece.

In general, the higher the voltage and the longer the processing time, the greater the film thickness of the electrophoretic paint. However, there is a certain limit, generally speaking, when the paint film exceeds 40 microns, the water content of the paint film will be greater than 40%, and it is easy to gauge bubbles or pinholes.

Swimming power

In electrophoretic coating, the coating ability of the inner surface of the workpiece is called the permeability. The ability to form a uniform electrophoretic paint film. Permeability is an important index of electrophoretic paint. Generally speaking, the greater the resistance of the paint film, the higher the permeability.

Coulomb efficiency

The number of milligrams of dry film of electrophoretic paint that can be deposited by a coulomb charge is called the coulomb efficiency and is measured in milligrams per coulomb. The higher the coulomb efficiency, the less power is consumed at the same voltage. The general coulomb efficiency of common electrophoretic paints is 15 to 20 mg/coulomb.

Site management is also a very important part of electrophoretic coating. The parameters of each link should strictly follow the operating specifications. Improve the necessary analysis and inspection system to ensure the ideal paint film and ensure long-term stable operation.

The permeability of electrophoretic paint is not only related to the variety and formula of paint, but also proportional to the voltage, time and solid content, and inversely proportional to the PH value and temperature of paint.