powder coating gun factory

• 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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