Select qualified powder, and a comprehensive inspection is required if it is overdue.Use of qualified powder coatings. Replace qualified powder coatings. There are pores on the surface of the workpiece;The conductive putty is scraped too thick and not completely dried; The powder coating performance is poor.

The coating is too thick, or the coating film is not fully cured;The solution to the problem of the powder coating itself: Strengthen the pre-treatment to avoid the treatment liquid remaining on the surface of the workpiece;Poor substrate quality and improper pre-treatment methods;Check the electrostatic generator and adjust the voltage;Reasons for the poor adsorption of powder flying:

Adjust the process parameters; Clean the drying tunnel, purify the gas in the furnace;Select the appropriate air compressor;The reason why the coating film has pores and pinholes:The coating film is not fully cured;The workpiece is poorly grounded;Regularly remove the oil and water in the air compressor;Keep the fluidized bed pressure stable and add new powder regularly. When spraying powder, pay attention to ensuring the thickness of the coating film.

The recycled powder must be screened to remove impurities, and then mixed with new powder in a certain proportion. Fine art powder spraying construction requirements: fine art powder has the characteristics of beautiful appearance, strong three-dimensional effect, and good decorative effect, but its construction process is strict.

If the temperature is too low and the time is too short, the powder will not form a pattern, and the mechanical properties will be greatly reduced due to incomplete curing. If the coating film is thin, the pattern is not obvious, and the pattern is also small.

Defects such as pitting and revealing the bottom appear. If the range is large It also affects the surface quality, after sanding with sandpaper, spray again or use paint remover to remove the coating, and then re-powder.

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