Since the advent of electrostatic spraying technology in the 50s of the 20th century, it has been widely used in a variety of fields. Under the action of the electrostatic field, the charged paint particles can be evenly deposited on the surface of the workpiece, achieving an efficient and uniform spraying effect. This technology is especially suitable for spraying fences, pipes, small steel structures and other workpieces with complex geometries and small surface areas, which can easily cover every corner and reduce paint waste. In addition, electrostatic spraying has a paint transfer efficiency of up to 60-85%, excellent atomization effect, and uniform film thickness, which helps to improve product quality.
However, electrostatic spraying has certain requirements for coating viscosity and conductivity, and the scope of application is limited. At the same time, the investment in equipment is relatively high. In recent years, the birth of powerless electrostatic spray guns has brought new changes to electrostatic spraying. The gun uses a small turbine generator assembly powered by air to generate electrostatic high pressure, which is safe and convenient. Air-assisted airless electrostatic spray guns are widely used in aircraft, construction machinery, power machinery and other industries with excellent high quality, high efficiency and high productivity. Despite the large initial investment, in the long term, the electrostatic spray gun is economically profitable due to significant savings in paint and working time, and the investment costs can be paid for in a short period of time.
