Powder spraying line, Powder coating line, Powder coating production line, Powder automatic spraying equipment.

The curing temperature used in the powder spraying line usually depends on factors such as the type of powder coating and the material of the workpiece. Here are some common ranges of curing temperatures for powder spraying:

• Metal powders: The curing temperature is usually relatively high. Generally, it needs to be above 200 °C to achieve the ideal curing effect. For example, for common metal powders like aluminum powder, steel powder, and copper powder, the curing temperature is usually between 200 °C and 220 °C.

• Non-metal powders: The curing temperature is relatively low, usually between 120 °C and 180 °C. For common non-metal powders such as polyester and epoxy resin powders, the curing temperature is generally between 140 °C and 160 °C.

• Special powders: Some special powders, such as high-temperature-resistant powders and chemical-corrosion-resistant powders, have relatively high requirements for the curing temperature. High-temperature-resistant powders usually need to be cured at temperatures above 250 °C to 300 °C, while chemical-corrosion-resistant powders are generally cured at temperatures between 180 °C and 220 °C.

• Powder spraying line

  
  

• The powder coating is evenly sprayed onto the surface of the workpieces that have undergone pretreatment to form a coating with a certain thickness.

  
  

• Powder feeding: The powder coating is transported from the powder barrel to the spray gun through the powder feeding system. The powder feeding system usually consists of components such as powder pumps and powder pipes. It sucks the powder coating out of the powder barrel by means of compressed air and then transports it to the spray gun.

  
  

• Spraying: The spray gun utilizes the principle of high-voltage electrostatics to make the powder coating carry an electric charge. Under the action of the electric field force, the powder coating is adsorbed onto the surface of the grounded workpiece. There are various types of spray guns, such as rotary cup spray guns and electrostatic spray guns. Appropriate spray guns can be selected according to the shape, size and coating requirements of the workpiece. During the spraying process, parameters such as the spraying pressure, spraying distance and spraying speed of the spray gun need to be well controlled to ensure the uniformity and thickness of the powder coating.

  
  

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