Spray painting and powder spraying are two completely different coating methods. Spray painting disperses the liquid paint (commonly known as paint mist) into paint particles and adheres to the surface of the coated object with the help of compressed air, while powder spraying disperses into powder mist particles under the action of high voltage static electricity with the help of compressed air, and the particles are adsorbed on the surface of the coated object through electric field.

The correct name of powder spraying is electrostatic powder spraying, which can not be simply completed with a spray gun. The composition of electrostatic powder spraying equipment is powder supply barrel (powder is supplied with compressed air) , high-voltage electrostatic generator and electrostatic powder spraying gun. The sprayed powder, also known as plastic powder, is fully known as plastic powder. The types mainly include outdoor powder and indoor powder, mainly epoxy resin type, outdoor powder is mainly polyester resin type; and paint are basically two components.

The common paints on the market are phenolic paint, which does not contain curing agent. The price of this kind of paint is relatively cheap. Of course, all aspects of data (including weather resistance, adhesion, hardness, salt spray, etc.) It will be worse; of course, there are many kinds of paints, such as automotive metal paint and polyurethane paint, which have good adhesion. In terms of rust prevention function, powder spraying and painting have their own advantages, and no one is absolutely superior. The most important premise is the pretreatment method of steel surface. The workpiece surface must be oil-free and rust-free. If a phosphating film can be made (now there are pottery and silane processes) Of course, it's best. This is a chemical treatment method, which has restrictions on construction conditions and requires proprietary equipment. In the past two years, the environmental protection department has paid close attention to the chemical treatment method. Many units have changed to mechanical and physical methods to treat the workpiece surface. The most commonly used equipment is the sanding and shot blasting machine. It can remove the rust on the workpiece surface and a small amount of oil, and can also meet the needs of sprayers Art;