The pinholes in the steel material are caused by fine red rust. Rapid painting after blasting is important.
Pinhole defects in iron materials can sometimes be caused by fine red rust. If there is hidden corrosion on the surface, gases or moisture can be generated during the curing process, which can destroy the paint film. Special attention is needed for cases of insufficient shot blasting or re-rusting due to prolonged exposure after degreasing. Condensation caused by temperature differences can also have an impact, and the frequency of occurrence tends to increase in winter. As countermeasures, painting within four hours after blasting and using anti-rust primers are effective. Humidity management is also important, with cases recommending levels below 60%. We also provide detailed examples of improvements specific to iron materials in publicly available documents.
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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.
