The processing method of atomizing paint through a spray gun and coating it on the surface of an object. There are many kinds of compressed air painting, high-pressure airless painting and electrostatic painting. Flammable paint containing a large amount of solvent is used for painting, and the solvent vapor volatilized to the air under the condition of rapid drying is easy to form explosive mixture. In particular, electrostatic spraying is carried out under high voltage above 60kV. Spark discharge is easy to occur when the distance between the spray nozzle and the painted workpiece is within 250mm, which will ignite flammable vapor.
At present, there are mainly four kinds: arc spraying, flame spraying, plasma spraying and explosive spraying. With spraying technology, coatings with wear resistance, corrosion resistance, heat insulation, conductivity, insulation, sealing, lubrication and other special mechanical physical and chemical properties can be obtained on various substrates. The application scope is very extensive, involving various sectors of the national economy and various fields including cutting-edge technology.
