Before changing the paint, check the three pre-treatment items for peeling during assembly. We will organize the causes of poor adhesion from a field perspective.
When contacted by a client regarding "peeling of the paint film during assembly," it is important to confirm the three processes of degreasing, cleaning, and drying before hastily changing the paint. If even a small amount of press oil or cutting oil remains, the oil will volatilize during curing, creating a layer that does not adhere between the substrate and the paint film. Even if the appearance at the time of shipment is good, peeling may become apparent due to the loads from fastening, transportation, and vibration. In the initial response, it is essential to check the production lot, the location of the peeling, and whether the substrate is exposed, and to verify the condition of the pretreatment solution, water drainage after cleaning, drying time, film thickness, and curing conditions against records. Furthermore, to prevent recurrence, it is effective to narrow down the verification items to about five and incorporate them into daily inspections, rather than relying on the operator's intuition. Peeling, rust, and blisters are linked to the same abnormalities in the preceding processes, so it is crucial to check the entire process. Please utilize check materials for confirming measures against painting defects. In physical inspections, documenting the differences with good products through photographs and recording the occurrence location on drawings will make it easier to prioritize countermeasures.
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basic information
Measures against paint peeling, pre-treatment management, inadequate degreasing, poor adhesion, metal painting, customer complaints.
Price range
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Applications/Examples of results
Measures against paint peeling for 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.
