A finished product housing will be surface treated to make the product more aesthetically pleasing and protect the outer casing.
Electrostatic powder coating is the principle of using high voltage electrostatic corona electric field.
Since the corona ring is connected to the high-voltage negative electrode to generate a corona discharge, a dense charge is generated around the lead ring to cause a negative charge on the powder.
Under the combined action of the electrostatic force and the compressed air, the powder flies from the nozzle to the workpiece. And uniformly adsorbed on the surface of the workpiece, dissolved by heating powder and left to cure into a uniform, continuous, smooth, smooth coating.
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