Electrophoretic coating involves immersing a conductive object to be coated in a槽 filled with a low-concentration, water-diluted electrophoretic paint solution, serving as the positive (or negative) electrode. A corresponding negative (or positive) electrode is placed in the槽. By passing a direct current through the槽 for a specified period, a uniform, water-insoluble coating film is deposited on the coated object.

Powder coating involves applying powder paint to the surface of workpieces using a spray equipment (electrostatic spray gun). Under the influence of static electricity, the powder evenly adheres to the surface of the workpiece, forming a powdery coating. This coating is then baked at high temperatures to flatten and cure, resulting in various finishes depending on the type of powder paint. The spray effect of powder coating surpasses that of painting in terms of mechanical strength, adhesion, corrosion resistance, and aging resistance, while also being more cost-effective than painting with equivalent finishes.

Powder coating electrostatic spray technology utilizes a powder-air mixture. A small fluidized bed is set within the powder hopper to create this mixture. In some cases, the hopper's vibration aids in preventing clogging or aggregation of the powder before it enters the conveyor line. The powder is then transported through a hose to the spray gun, where the nozzle forms an electrically charged stream due to the input of high-voltage direct current.

The distinguishing features of electrostatic painting include:

Due to the electrostatic effect, the painted film is evenly thick and has strong adhesion and good decorative properties.

High productivity, the use of multiple nozzles simultaneously allows for semi-automatic and fully automatic assembly line operations. Compared to traditional compressed air spray painting, productivity can be increased several times over.

Electrostatic spraying, due to the charged paint mist being insulated, is not conducive to coating complex workpieces with recessed holes, and the paint film distribution on convex tips is uneven. Attention should be given to process adjustments or manual repairs during operation.

Electrophoretic paint may yield different results due to variations in the type of electrophoretic coating used and the conditions of the electrophoretic process.

Due to electrostatic adsorption, paint mist pollution is reduced, thereby improving labor hygiene conditions.

Electrostatic painting enhances paint utilization and reduces costs.