News center

Dusting method: When working, the spray gun part of the electrostatic spraying is connected with the negative pole, the workpiece is connected with the positive pole and grounded. Under the high pressure of the high-voltage electrostatic generator, an electrostatic field is formed between the tip of the spray gun and the workpiece. The electric field force on the paint particles is proportional to the main voltage of the electrostatic field and the charge of the paint power, but inversely proportional to the distance between the spray gun and the workpiece. When the voltage is high enough, the area around the tip of the spray gun forms an air- Ionization and heat, so that sharp edges on the jet tip or the needle around the formation of a dark red halo, visible in the dark, when the air produced a strong corona discharge.

Coatings in the film that is the resin and pigment mostly composed of polymer organic compounds, and many become conductive dielectrics, solvent-based coatings in addition to the film-forming objects are organic solvents, solvents, curing agents, electrostatic thinner, And other types of additives and other substances. Such solvents in addition to benzene, dimethyl a stupid, solvent gasoline, mostly polar substances, low resistivity, a certain degree of conductivity, they can improve the charging performance of the coating. With the rapid development of industry, the manufacture of electrostatic spraying equipment is more and more sophisticated. The major foreign countries are Nordson America and Switzerland Golden Horse!