
Powder spraying
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● Principles of powder spraying process: The powder coating is sprayed to the appearance of the workpiece with electrostatic spraying equipment. Under the action of electrostatic electricity, the powder will be evenly adsorbed on the appearance of the workpiece, forming a powdery coating. The powder coating is cured after high temperature baking and becomes the final coating with different effects.
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● Electrostatic powder spraying process flow: Surface pretreatment (oil removal, no heating, drying) spraying —— baking curing —— film packaging —— warehousing finished product warehouse
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● Merit: Less pollution, surface adhesion, good corrosion resistance, more color, can make a variety of colors according to customer requirements, and produce small color difference. The film coating performance is good, and the primary film formation thickness can reach 50-80 μm.
● Shortcoming: the surface will have some particle impurities, metal texture will be poor.