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Sanding is one of the important tasks to improve the powder coating effect.

With the rapid development of the coating industry, coating technology and process management have made great progress and are receiving more and more attention. The coating production line generally consists of several processes. The process depends on the decorative properties of the coating and the function of the coating. For dozens of occasions or even hundreds of occasions with high requirements, the content of the process and its essence are considered.
The coating process is a combination of three basic processes, such as pre-coating treatment, coating application and drying, and a number of auxiliary processes. The auxiliary process is not an indispensable process for the coating process, but a coating process that assists the main process or a special requirement of a certain product. It includes grinding, polishing, waxing, waxing, coating, and sealing. Because it is an auxiliary process, many manufacturers have not received sufficient knowledge and sufficient attention to these processes.
Grinding is divided into dry grinding and wet grinding. Dry grinding is not wet with water. Wet grinding is to lubricate the coating with water or other wetting agent to obtain a smoother surface and wash away the dust. For example, when polishing nitrocellulose lacquer and perchloroethylene lacquer, it is not only moistened with water but also moistened with pine perfume. In order to improve the decorativeness of the topcoat, it can be polished with very fine water sandpaper before polishing, and soapy water can also be used as a wetting agent.
The main purpose of grinding is to remove burrs and debris on the surface of the substrate, such as floating rust, etc.; to eliminate the particle, roughness and unevenness of the coated surface of the workpiece, such as the surface of the putty after drying, the surface is rough and uneven. It is necessary to polish to obtain a smooth surface; enhance the adhesion of the coating. The adhesion of the paint on a smooth surface is poor, and the mechanical adhesion of the coating can be enhanced after grinding, so sanding is one of the important tasks to improve the coating effect.

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