Electrostatic powder spray gun Spraying techniques
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- Issue Time
- Sep 10,2026
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How to get important points of the Electrostatic powder spray gun Spraying techniques,here you can find it
Electrostatic powder spray gun Spraying techniques
1.The operation of electrostatic spray guns mainly falls into two categories: liquid and powder.
The core lies in parameter matching, gun holding technique, and grounding safety. Mastering the correct distance and voltage can significantly improve the powder coating rate and reduce the painting material waste.
2.How to adjust parameters more conveniently
Voltage setting: Powder coating is typically set at 60-90kV, while liquid electrostatic coating is generally set at 50-80kV. Too high a voltage may lead to rebound, while too low a voltage may result in insufficient adsorption force.
Air pressure adjustment: The atomizing air pressure should be moderate. Too much pressure interferes with electrostatic adsorption, while too little pressure narrows the spray pattern.
Environmental control: The relative humidity in the workshop should be maintained between 50% to 65%. Excessively high humidity can easily lead to abnormal discharge or electric leakage.That is too dangerous for workers.
3.What are the techniques to pay attention to ?
Spraying distance: Keep the spray guns 15-30 cm away from the workpiece. The higher the voltage, the farther the distance should be to avoid discharge breakdown.
Moving speed: Maintain a uniform and steady speed, typically between 30-60 cm/s. If the speed is too fast, the coating will be thin; if too slow, it is prone to sagging.
Gun holding posture: Hold the spray gun perpendicular to the surface of the workpiece, following the order from top to bottom and from left to right. For complex workpieces, multiple angles need to be covered. You can choose a gun with the deep corner coating function .
Overlapping spraying: Using a 50% overlap method can achieve a more uniform coating effect。
4.How to maintain the spray guns to ensure long use
Clean promptly: Clean the nozzles and transfer tubes immediately after the operation with a dedicated solvent. It is strictly prohibited to poke the holes with metal needles.
Component maintenance: Regularly lubricate moving parts, check the wear of sealing rings, springs, and nozzles, injectors,powder hose,electrode holders and replace them according to the manufacturer's recommendations.
Grounding inspection: Ensure that the workpiece and the hanging fixture are reliably grounded, with a grounding resistance less than 1MΩ, to prevent poor electrostatic adsorption effect
There are some famous brand powder guns is best for your to choose,such as gema,wagner and nordson.
The core lies in parameter matching, gun holding technique, and grounding safety. Mastering the correct distance and voltage can significantly improve the powder coating rate and reduce the painting material waste.
2.How to adjust parameters more conveniently
Voltage setting: Powder coating is typically set at 60-90kV, while liquid electrostatic coating is generally set at 50-80kV. Too high a voltage may lead to rebound, while too low a voltage may result in insufficient adsorption force.
Air pressure adjustment: The atomizing air pressure should be moderate. Too much pressure interferes with electrostatic adsorption, while too little pressure narrows the spray pattern.
Environmental control: The relative humidity in the workshop should be maintained between 50% to 65%. Excessively high humidity can easily lead to abnormal discharge or electric leakage.That is too dangerous for workers.
3.What are the techniques to pay attention to ?
Spraying distance: Keep the spray guns 15-30 cm away from the workpiece. The higher the voltage, the farther the distance should be to avoid discharge breakdown.
Moving speed: Maintain a uniform and steady speed, typically between 30-60 cm/s. If the speed is too fast, the coating will be thin; if too slow, it is prone to sagging.
Gun holding posture: Hold the spray gun perpendicular to the surface of the workpiece, following the order from top to bottom and from left to right. For complex workpieces, multiple angles need to be covered. You can choose a gun with the deep corner coating function .
Overlapping spraying: Using a 50% overlap method can achieve a more uniform coating effect。
4.How to maintain the spray guns to ensure long use
Clean promptly: Clean the nozzles and transfer tubes immediately after the operation with a dedicated solvent. It is strictly prohibited to poke the holes with metal needles.
Component maintenance: Regularly lubricate moving parts, check the wear of sealing rings, springs, and nozzles, injectors,powder hose,electrode holders and replace them according to the manufacturer's recommendations.
Grounding inspection: Ensure that the workpiece and the hanging fixture are reliably grounded, with a grounding resistance less than 1MΩ, to prevent poor electrostatic adsorption effect
There are some famous brand powder guns is best for your to choose,such as gema,wagner and nordson.
