The cause of paint peeling in metal baked coatings may not be the paint itself. This explains the poor adhesion due to insufficient pretreatment.
The peeling of paint that occurs during metal baking paint processes is not solely caused by the paint or the baking temperature. If the pre-treatment processes such as degreasing, washing, chemical treatment, and drying are insufficient, the adhesion between the paint film and the metal surface decreases. Particularly, if baking is performed while cutting oil or rust preventive oil remains, the oil will volatilize at temperatures around 180 to 200 degrees, creating tiny gaps between the paint film and the material. As a result, peeling occurs due to vibrations and impacts during use. To improve quality, it is important to manage pre-treatment conditions numerically before changing the paint.
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basic information
Metallic baked coating, paint peeling, pretreatment, degreasing, chemical treatment, poor adhesion.
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Applications/Examples of results
Measures to prevent paint peeling for automotive parts, home appliances, OA equipment enclosures, and industrial machine parts.
Company information
We are not just a "subcontracted painting factory." Established in 1958, our company has a foundation of painting technology and also specializes in chemical treatment, stripping, and cleaning, functioning as the "external surface treatment department" in your organizational chart. Based on our philosophy of "preparation is eight-tenths of the work," we emphasize participation from the "upstream process" before the drawings are finalized. We conduct test painting on a wide range of metals and difficult materials, and we produce the entire process from assembly, packaging, to delivery, thereby reducing your management workload. Additionally, by being able to perform zinc phosphate treatment in-house, we achieve stable painting quality. Furthermore, our micro-heating stripping technology, which does not use chemicals, maintains the electrical state of the "jigs (hangers)" that influence painting quality. Our approach of "pre-treatment determines painting quality" ensures the stability of the paint film during mass production. Rather than simply "applying specified standards," we work backwards to achieve optimal painting specifications and prevent scratches during transportation, sparing no effort in thorough discussions from the outset. This diligent preparation is the shortest path to preventing rework and minimizing total costs. From the development stage, please utilize the expertise of our specialists as part of your production line.
