Metal coating pre-treatment service - List of Manufacturers, Suppliers, Companies and Products | IPROS GMS

Metal coating pre-treatment service Product List

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Is the paint peeling due to insufficient pre-treatment?

Most paint peeling is caused not by the paint itself but by inadequate pre-treatment. This explains the poor adhesion due to insufficient degreasing and chemical treatment.

Paint peeling is a typical defect caused by issues in the pre-painting process, such as insufficient degreasing or inadequate chemical treatment. If press oil or cutting oil remains during curing, the oil will volatilize at around 180 degrees, creating tiny spaces between the paint film and the substrate. As a result, peeling occurs due to vibrations or impacts. Even if the surface looks clean, there may still be residual oil or oxidation films, making it important to manage the numerical values of pre-treatment conditions.

Company：永和工芸
Price：Other

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Metal coating pre-treatment service

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The relationship between blister defects and moisture.

Blistering defects may be caused by moisture or corrosion rather than paint. I will explain the phenomena occurring within the paint film.

Blistering is a defect where the surface of the coating swells, which can lead to peeling or the recurrence of rust over time. The main causes are moisture or foreign substances remaining inside the coating. If moisture is left due to insufficient drying or inadequate chemical treatment, it can combine with moisture that has entered from the outside, creating pressure within the coating. Since the cause is not easily identifiable by just looking at the surface, it is important to check the pretreatment process and drying conditions.