Insufficient drying after cleaning may be the cause of pinholes. I will explain the defects caused by residual moisture.
Insufficient drying after cleaning is a commonly overlooked cause of pinhole defects. In parts with complex shapes or bag holes, moisture tends to remain, and at baking temperatures around 180 degrees, it can rapidly evaporate and break through the coating. Residual moisture can lead not only to pinholes but also to blisters, adhesion failures, and the recurrence of rust. In environments where humidity exceeds 70 percent, managing drying time and air blow conditions is crucial.
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basic information
Metal coating defect countermeasures, pretreatment management, adhesion failure, pinholes, blisters, quality improvement.
Price range
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Applications/Examples of results
Improvement of painting defects in automotive parts, construction hardware, and metal products, and 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.
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