With the rapid development of modern aviation industry, high performance materials with high specific strength, good corrosion resistance and high heat resistance are needed to maintain the aircraft under the prescribed airworthiness management and to restore, maintain and even prolong the service life of the aircraft as far as possible to ensure flight safety. 。 The air application environment of aircraft is extremely complex. In order to avoid the corrosion and weathering of various alloys, composites and electronic equipment in the fuselage, the aerodynamic performance of aircraft is reduced. Anti-corrosion application has become the focus of industrial production and maintenance.

The common surface treatment method is to coat the surface with a non-metallic protective layer, such as paint, paint, resin and so on. Generally, painting or spraying methods are used for operation, but there are some shortcomings, such as low efficiency, waste of paint and serious impact on human health. Compared with electrostatic spraying, electrostatic spraying has the following advantages:

1. Short time and labor saving. The electrostatic spraying on the coating line of the aerodynamic transmission shaft exerts high-voltage electrostatic force to the fog through the special low-pressure atomization method to make it charged and produce electrostatic effect. Because the charged coating particles almost adhere to each other, the coating efficiency can be greatly improved.

2. Reducing costs and saving resources. Electrostatic spraying improves the spraying efficiency, reduces the spatter of the coating, and also saves the cost of the coating.

3. Reliable quality, environmental protection and hygiene. By adjusting the configuration of spray gun and spray parameters, uniform, smooth and plump coatings can be obtained, which can improve the protection and decoration effect of coatings. Air spray paint spray is serious and the working environment is poor. The spatter of paint fog produced by electrostatic spraying is very small, which not only reduces the consumption of paint and waste emissions, but also improves the working conditions in the spraying room.