Is the reason for the sauce not stopping just viscosity? The pitfalls of film thickness and component posture.
Paint drips are more likely to occur when the three conditions of viscosity, film thickness, and component orientation are disrupted.
■Cause of Occurrence: Drips are an appearance defect where traces of paint flow remain. Even a single line or a localized accumulation will stop the visual inspection. Common causes include decreased paint viscosity, excessive film thickness, close gun distance, and poor part orientation. Corners, areas around holes, and downward-facing surfaces are places where paint tends to accumulate and drip easily. ■Truth: It should not be resolved solely by the skill of the operator. Even if the viscosity is adjusted, if the discharge amount is too high, the film thickness will increase, and if the application method is poor, the paint will flow to the lower side. This is a warning that occurs when viscosity, film thickness, orientation, and drying time overlap. ■Improvement Measures: By checking and recording four points—areas where drips occurred, the number of occurrences, whether the film thickness is within standards, whether the viscosity is within the set range, and whether the part orientation is in a position that is less likely to flow—you can narrow down the causes. Please utilize materials that can confirm painting conditions, film thickness, and jig orientation.
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Conditions for drip occurrence: viscosity, film thickness, component posture / Paint viscosity management: Ford cup measurement / Key areas: corners, around holes, downward surfaces / Record four points: occurrence location, number of occurrences, film thickness, viscosity / Measures to reduce drip occurrence rate.
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Automotive parts, complex-shaped parts, architectural hardware, appearance inspection compatible products.
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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.
