Electrostatic high voltage 60-90kV. If the voltage is too high, it is easy to cause powder rebound and edge pitting; if the voltage is too low, the powder feeding rate is low.
Electrostatic current 10 20μA. If the current is too high, it is easy to cause discharge to break down the powder coating; if the current is too low, the powder coating rate is low.
The flow pressure is 0.30-0.55MPa. The more the flow pressure is. The higher the powder deposition rate, the faster the coating of the predetermined thickness will be obtained, but the higher the powder dosage and the higher the wear rate of the spray gun. )
Atomization pressure 0.30 0.45MPa. Properly increasing the atomization pressure can keep the thickness of the powder coating uniform, but too high will cause the powder feeding parts to wear quickly. Appropriately reducing the atomization pressure can improve the powder covering ability, but if it is too low, the powder feeding part will be easily blocked.
The gun cleaning pressure is 0.5MPa. If the cleaning pressure is too high, it will accelerate the wear of the gun head, and if it is too low, it will easily cause the gun head to be blocked.
The fluidization pressure of the powder supply barrel is 0.04-0.10MPa. If the fluidization pressure of the powder supply barrel is too high, the density of the powder will be reduced and the production efficiency will be lowered. If it is too low, insufficient powder supply or powder agglomeration will occur.
The distance from the gun mouth to the workpiece is 150-300mm. If the distance between the spray gun mouth and the workpiece is too close, it is easy to cause discharge to break down the powder coating, and if it is too far, it will increase the amount of powder and reduce the production efficiency.
Conveyor chain speed 4.5 5.5m/min. Too fast conveyor chain speed will cause insufficient powder coating thickness, too slow will reduce production efficiency.
