External charging

In painting technology, the term "external charging" refers to an electrostatic painting process in which the workpieces to be painted are charged on the outside. This process is often used in industrial painting systems to ensure that workpieces are coated evenly and efficiently.

With external charging, the workpieces to be painted are placed in a painting booth or painting tunnel where an electrostatic sprayer is located. This spraying device generates an electrical charge that is transferred to the paint particles as they emerge from the spray gun. At the same time, the workpieces are provided with a countercharge, either by an electrically conductive device or by the natural conductivity of the material.

The paint particles are attracted by the electrostatic charge and distributed evenly on the surface of the workpieces. This leads to improved adhesion and opacity of the paint as well as a reduction in overspray and paint mist in the surrounding area. An important advantage of external charging in painting technology is its ability to effectively coat even complex geometries and areas that are difficult to access. As the paint particles are directed onto the workpieces by electrostatic attraction, they can produce an even coating even in corners, edges and recesses, which is often difficult with conventional painting processes.

In addition, external charging enables efficient use of the paint material, as less overspray is created and a higher transfer efficiency is achieved. This not only contributes to lower painting costs, but also reduces material consumption and the environmental impact of excess paint mist. Overall, external charging in painting technology is a proven process for achieving high-quality and uniform painting results on a wide range of workpieces. Its efficiency, precision and versatility make it a popular choice in industrial painting, where a high-quality surface coating is crucial.