electrostatic spray gun supplier

• Common problems in the process of spraying

  

  Jul 25, 2025

  Spray unevenness is a common quality problem, which may lead to inconsistent coating thickness and affect the appearance and durability of products. The common reasons are as follows: 1. Unstable spray pressure: During the spraying process, if the pressure of the spraying equipment is unstable, it will lead to uneven powder spray and affect the uniformity of the coating. Common causes include unstable compressed air system, poor connection between the spray gun and the electrostatic generator, etc.  resolvent ： .      Ensure that the pressure of the compressed air system is stable and check it regularly. .      Adjust the nozzle pressure to ensure that the pressure is within the recommended range. .      Check the connection of the equipment to ensure that the voltage between the spray gun and the power supply is stable.     2. The spray gun distance is not appropriate: If the distance between the nozzle and the surface of the substrate is too close or too far, the spraying will be uneven. If the distance is too close, the powder injection amount is too large, which is easy to form accumulation; if the distance is too far, the adhesion of the powder is insufficient, which is easy to produce thin coating or splash.  resolvent ： Adjust the position of the spray gun according to the recommended distance in the equipment manual. The distance between the spray gun and the substrate is usually recommended to be 15-30cm. Adjust the Angle of the spray gun to ensure that the powder can cover the surface evenly. 3. Improper control of powder spray: Too much or too little powder spraying will lead to uneven spraying, too much powder will lead to thick coating, too little powder will lead to uneven coating and poor adhesion.  resolvent ： .     Use the powder flow control function of the spraying equipment to ensure that the powder amount is appropriate. .     Check the nozzle of the spray gun regularly to ensure that there is no blockage and the powder flow rate is stable.  

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• Don't let these spray problems ruin your product

  

  Jul 30, 2025

  Powder adhesion is not firm Poor coating adhesion may lead to powder shedding or unevenness. Common causes are as follows: Surface treatment is not complete If the substrate surface is not thoroughly cleaned, rusted or treated, the powder will not adhere firmly and the coating will fall off Resolvent ： . Clean and remove rust in strict accordance with surface treatment requirements to ensure that the substrate surface is clean and free of oil. . Use suitable surface treatment methods such as phosphating, sandblasting, etc.     There are particles and ripples Particle accumulation and water ripple are common defects in the spraying process, which usually show irregular protrusions or depressions on the surface of the coating. The viscosity of the spray powder is too high When the viscosity of the powder is too high, the powder can not be evenly distributed in the spraying process, and it is easy to pile up and form an irregular texture Resolvent ： .Select the right powder coating to ensure moderate viscosity. .Adjust the powder spray amount and spraying pressure of the nozzle to reduce the problems caused by high viscosity of powder. The spraying environment is too humid High humidity environment will lead to powder coating moisture absorption, reduce its flow, and then affect the spraying effect, resulting in water wave or particle accumulation Resolvent ： . Control the humidity of the spraying environment to ensure that the humidity is below 50%. . Use dry powder coatings and avoid using expired or hygroscopic powders in humid environments.  

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