Basic method of powder coating equipment
Basic method of powder coating equipment
Powder coating equipment is a method of spraying electrostatic powder coating particles through a spray gun, making them adsorb on the surface of the grounded workpiece for a long time, and then heating the workpiece to level and solidify. The powder spraying equipment connects the high-voltage negative electrode on the metal guide plate of the spray gun head, and the workpiece to be sprayed is grounded, so that a strong electrostatic field is formed between the spray gun and the workpiece. When the compressed air is used as the carrier gas to send the powder coating from the powder supply cylinder to the guide rod of the spray gun through the powder supply tube, the corona discharge generated by the high-voltage negative electrode is connected to the guide rod, and a dense negative electrode is generated near it to generate charge. , so that the powder is negatively charged, and the powder spraying equipment enters an electrostatic field with high electric field strength. Under the dual action of electrostatic force and carrier gas, the powder evenly flies to the surface of the grounded workpiece to form a thick and uniform powder layer, which is then heated and solidified to transform into a durable coating film. This is more applicable in the steel drum industry and has achieved great success.
