Defects in which the paint film peels off during assembly may be caused by the pretreatment rather than the paint itself.
When paint peeling occurs during the assembly of automotive parts, it leads to significant complaints from customers due to poor adhesion. The causes can lie not only in the paint itself but also in insufficient degreasing, residual oil, instability of the chemical conversion coating, and inadequate surface roughness, which may be hidden in the pretreatment process. Even if the parts appear to be good during visual inspection, they can delaminate under the stress of fastening and transportation, so it is important to review degreasing, cleaning, drying, and film thickness verification at each stage of the process.
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basic information
Metal coating, paint peeling, poor adhesion, pretreatment, degreasing, chemical treatment, automotive parts, quality improvement.
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Applications/Examples of results
Measures to prevent paint peeling on automotive parts, construction hardware, industrial machinery, and metal products; review of the pretreatment process.
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.
