Color unevenness is not just a visual issue. Quality differences arise from four conditions: stirring, dilution, film thickness, and curing.
Color variations and differences between lots can easily lead to complaints when compared by customers. The cause is not only the color of the paint. Slight deviations in four factors—paint stirring, dilution ratio, film thickness, and curing conditions—can change the appearance even with the same color number. Areas with thinner film thickness have reduced rust resistance, while thicker areas can lead to runs or poor drying, making color variations a sign of quality inconsistency. Initially, we check the differences from the standard sample, the lot in question, the orientation of the painted surface, and the film thickness measurements. The countermeasures involve standardizing stirring time, dilution conditions, measurement locations, and curing temperature, as well as keeping records for each lot. Additionally, using standard samples can reduce judgment discrepancies among workers. Addressing color variations not only improves appearance but also helps prevent film thickness issues and runs. Please utilize process verification materials for reviewing condition management. Relying on sensory judgment for color can lead to recurrence. It is important to use numerical records alongside standard samples and share the criteria for pass/fail on-site.
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basic information
Color variation measures, painting conditions, film thickness management, curing conditions, paint management, metal coating quality.
Price range
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Applications/Examples of results
Improvement of color unevenness in automotive parts, construction hardware, industrial machinery, and metal products; standardization of painting conditions.
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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