Electrostatic wet painting

Electrostatic wet painting is a process in painting technology in which an electrostatic field is used to apply paint or varnish to a workpiece. Unlike electrostatic powder coating, which uses powder paints, electrostatic wet painting is a technique that uses liquid paints.

Here is a brief explanation of the process:

1. Preparation of the workpiece: first, the workpiece is prepared by cleaning, degreasing and possibly priming it. The surface must be free of dirt, grease and rust to ensure good adhesion of the paint material.
2. Paint application: The liquid paint is applied to the workpiece in a paint booth or spray stand. A spray gun that finely atomizes the paint may be used for this purpose.
3. Electrostatic charging: During paint application, the workpiece and/or paint is charged by an electrostatic charging process. Typically, the workpiece is placed on a ground while the spray gun is positively charged. This results in the paint droplets having a positive charge.
4. Attraction of the paint droplets: Due to the electrostatic charge, the paint droplets are attracted to the workpiece. This causes the paint to be evenly distributed on the surface, as the positively charged droplets are attracted to the negatively charged workpiece.
5. Drying: After the paint is applied, the workpiece is usually cured in an oven or by other drying methods to ensure a durable coating.

Electrostatic wet painting offers several advantages, including better paint utilization because less overspray occurs, and a more uniform coating. It is used in a variety of industries, including automotive, furniture manufacturing, metal fabrication and others where a high-quality finish is required.