Powder spraying construction technology and requirements

The so-called powder electrostatic spraying is the use of the principle of high-voltage electrostatic corona electric field. A high voltage negative electrode is connected to the metal diversion mark of the spray gun head, and the sprayed workpiece is grounded to form a positive electrode, so that a strong electrostatic electric field is formed between the spray gun and the workpiece. When the compressed air used as the carrier gas sends the powder paint from the powder supply tank to the guide rod of the spray gun through the powder tube, the corona discharge generated by the guide rod connected to the high voltage negative electrode generates dense negative charges near it , So that the powder is negatively charged and enters the 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 uniform thickness of powder layer, and then heat and solidify into Durable coating film. Coating construction process: Pre-treatment-drying to remove water-spraying-inspection-baking-inspection-finished product Construction requirements General powder spraying construction requirements