Plastic spraying (powder spraying) Process principle: Thermoplastic or thermosetting powder coating is adsorbed on the surface of the metal workpiece through an electrostatic spray gun, and the coating is formed by high-temperature melting and solidification. Application fields: scenes with low precision requirements such as racks, worktables, building profiles, and home appliance shells. Coating characteristics: Thickness 0.05-0.12mm, dimensional accuracy is difficult to guarantee, rich color selection but long color adjustment and color change cycle. Electrophoresis (electrophoretic coating) Process principle: Use electric field to drive charged paint particles to deposit in a directional manner in the solution to form a uniform and dense coating, which is divided into anodic electrophoresis (aluminum) and cathodic electrophoresis (steel). Application fields: scenes with high requirements for corrosion resistance and adhesion such as automotive frames, aerospace parts, precision machinery, and high-end home appliances. Coating characteristics: thickness of about 0.02mm, high dimensional accuracy, can cover hidden places (such as welds, grooves), and the coating uniformity is better than spraying.
