Step 6 – Inspection

Premaz nanešen na podlogu treba da štiti od prerane korozije. Celovitost premaza može se proceniti s obzirom na poroznost i korektivne radove koji se izvode ako je potrebno. Poroznost premaza može biti uzrokovana brojnim nepravilnostima nanosa kao što su:

  • Udubljenja u prevlaci uzrokovana ulaskom vazduha tokom procesa stvrdnjavanja.
  • Područja bez premaza koja su naročito prisutna na uglovima ostavljajući izložene vrhove profila.
  • Pukotine na sloju izazvane prekomernim vlažnim premazom stvaraju pritisak tokom faze stvrdnjavanja.

 

The coating applied to the substrate should protect against premature corrosion. The integrity of the coating can be assessed with respect to porosity and remedial work carried out if required. Porosity in the coating can be caused by numerous abnormalities in the coating such as:

  • Pinholes in the coating caused by air escaping from the surface of the substrate through the coating during the curing process.
  • Uncoated areas especially prevalent on corners or weld seems where coatings may have flowed away leaving the peaks of the profile exposed.
  • Cracks in the coating caused by excessive wet film build creating pressure during the flow stage of the curing process.

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