Rationale: between the gun and the workpiece to form a high-voltage corona discharge electric field, when the powder particles are ejected from the lance through the discharge port area, then the complement of a large number of electrons, becomes negatively charged particles, the electrostatic attraction effects electrostatic powder coating process, the workpiece is adsorbed onto positively charged up. When the powder is attached to a certain thickness, "sex repulsion" effect occurs, can not be re-adsorbed powder, so that each part of the powder layer of uniform thickness, and then cured by heating the powder layer after baking leveling become uniform film layer; powder coating process, a typical powder coating process is as follows: a piece → degreasing → washing → rust → washing → phosphate → washing → passivation → powder coating curing → cooling → → next piece; the impact of powder The main factor in the quality of electrostatic spraying. Many coating method coating method, mainly painting method, dipping method, air spray, airless spray, electrostatic spray coating method and the electrophoresis method. Supporting the principle of the coating material is fitted and product requirements in the paint construction, rarely used single-layer coating spray processing plastic shell, because it can not reach a uniform non-porous coating. Often used primer plus topcoat layer coating process, may be added as necessary an intermediate layer, outer layer of closed topcoat varnish layer. Workpiece to be coated must be good adhesion, across the paint to be a good combination of strength primer layer, and the ability to have anti-rust. Supporting the principle of the primer layer and top coat layer is as follows: It is best drying primer layer and drying of topcoats;-drying primer and self-drying topcoats; with the base primer and paint surface paint matching. When selecting finish strong solvent, such as: lacquer, paint vinyl chloride, etc., must be resistant primer layer is not bitten from strong solvents, such as alkyd, epoxy paint. Primer and topcoat have hardness, stretching roughly similar extent. When the play based on matching the paint curing primer, the temperature difference between the heat. Oil than the oil level of the primer coat is shorter, otherwise poor weather plated finish Teflon spray processing, and primer paint drying shrinkage of different layers could easily lead to cracking. When heterogeneous multilayer coatings, often using intermediate layer, so that the paint base transition, reaching the bottom and the surface layer of a good combination. Organic coating adhesion and the nature of the relevant Material, according to the size of the adhesion, the metal can be arranged as follows: Cu → Ni → steel → tin brass → → → Pb black aluminum metal to almost all types of primers are applicable, The magnesium aluminum parts and their alloys, usually with zinc chromate primer base passivation. Surface pre-treatment is preferably carried out effectively, making it generate a phosphate film or an oxide film to enhance the adhesion of the substrate with a primer. Then choose the adhesion primer. For aluminum and galvanized never use red lead paint primer, otherwise it will cause electrochemical action, so that the adhesion of decline. Jiangxi Teflon spray processing | spray processing | Sand painting hung hardware appliances provided by the Dongguan City, Sha Hong Hardware Appliance Co., Ltd.. Dongguan City, Sha Hong Hardware Appliance Co., Ltd. (www.dgshahong.com) strong, credible, in Dongguan, Guangdong spraying equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the sand painting hung hardware appliances into the brilliant and you work for a better future!