Although they are the same parts, the finish varies from lot to lot. The reason is that the conditions are not recorded. Here are five key conditions to focus on.
The same parts and the same paint, yet the finish varies from lot to lot. Are you considering changing your outsourcing partner? 【First, check here】 □ You know the painting conditions for the day when defects occur. □ The conditions are not determined solely by the experience of the person in charge. □ Even with changing seasons, management is done based on the same standards. 【Five conditions to record】 1. Temperature of the degreasing or chemical treatment solution. 2. Viscosity and dilution ratio of the paint. 3. Film thickness. 4. Baking temperature and time. 5. Temperature and humidity of the painting area. 【Why recording is effective】 The cause of quality fluctuations is that some condition has changed without notice. With records, you can compare good days and bad days to narrow down the causes. 【Points to consider when choosing an outsourcing partner】 Check if they record these five conditions and if they can show them to you. 【Free materials】 The management standards for the five conditions are summarized in the related catalog "Eiwa Kogei_Paint Quality Control Guidelines_Process Management Standards." You can download it for free from this page.
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Theme: Stabilization of coating quality. Record items: Pre-treatment liquid temperature, paint viscosity and dilution ratio, film thickness, curing temperature and time, temperature and humidity in the painting area.
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Quality assurance and purchasing personnel struggling with the variability in the quality of painted products. Selection and switching of painting subcontractors, process audits, and training materials for quality management.
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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.
