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Powder coating-----Surface finishing, Surface treatment on prototype. (9)

- Jun 06, 2018 -

During the whole process of hand-slab processing, most of the hand-made plates undergo surface treatment through appropriate processing methods (CNC or 3D printing). The purpose of the surface treatment is to satisfy corrosion resistance, abrasion resistance, decorativeness or other SP requirements. The product features a full range of functions and there are dozens of processing techniques for the prototyping processing. As a large-scale hand-saw factory, RMT PRODUCTS CO., LTD can provide most of the surface processing requirements for manual processing, and has a standardized production process. Next, it introduces the surface treatment technologies commonly used in manual processing.


Electrostatic spray powder coating is the process of applying a powder coating to a workpiece by means of corona discharge. The process is that the powder supply system sends the powder coating into the spray gun by the compressed air gas, and the high voltage generated by the high voltage electrostatic generator A. In front of the spray gun, dense charges are generated by corona discharge. The powder is generated by the spray gun nozzle formed by the electrostatic force. On the workpiece with the opposite polarity, as the powder on the spray increases, the charge accumulation increases. When the thickness reaches a certain thickness, the adsorption cannot continue due to the electric charge. . Static repulsion, the entire workpiece coated with a certain thickness, and then the powder is melted, smoothed and cured, by heat, that is, a hard coating on the surface of the workpiece.


     Advantages and disadvantages of electrostatic powder coating: no dilution, no toxicity, no pollution to the environment, good coating quality, high adhesion, high mechanical strength, corrosion resistance, short curing time, no primer, low technical requirements for workers, usage rate high. The ion rate of the powder, thick film, corrugated, matte surface effects, only semi-gloss and light treatment, light both appearance effects.

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