Measures to address poor adhesion in metal baked coatings.
What causes poor adhesion in metal baked coatings? This explains the key points for improving quality by reviewing the pretreatment process.
Poor adhesion in metal baked coatings can lead not only to paint peeling but also to the reoccurrence of blisters and rust, as well as a decrease in durability. Many of the causes lie not in the painting process but in the pretreatment process. Residual oil due to insufficient degreasing, inadequate formation of chemical conversion coatings, and moisture retention due to insufficient drying can prevent the coating film from adhering sufficiently to the metal surface. Furthermore, the necessary pretreatment varies by material, such as aluminum die-cast and zinc-coated steel sheets. Standardizing pretreatment conditions and numerical management are key to improving quality.
basic information
Metallic baked coating, poor adhesion, pretreatment, degreasing, chemical conversion coating, quality improvement.
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Applications/Examples of results
Measures to address poor adhesion in automotive parts, home appliances, metal enclosures, and industrial machinery components.
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