Even small holes can affect rust prevention performance. We will organize measures against pinholes based on three factors: oil, moisture, and air.
A pinhole may appear to be a small hole, but it is a significant defect that can lead to appearance issues, repainting, and sorting work for our clients. The factors to check are three: oil, moisture, and air. If oil remains on the surface of the material, if moisture does not fully dry after cleaning, or if air is trapped during spraying, any of these can cause gas to escape during curing, appearing as holes on the surface of the coating. Even a single hole can serve as an entry point for moisture and oxygen, potentially leading to rust or blisters. Initially, it is important to check the number of holes, the surfaces where they occur, and the incidence rate within the same lot to distinguish whether they are due to voids in the material or residues from the process. The countermeasures involve recording the temperature and concentration of the degreasing solution, drying time, spraying conditions, and the condition of the material for each process. It is crucial to manage pinholes not just as an appearance issue but as a weakness in corrosion resistance. Please utilize the painting defect check materials for organizing the causes. The countermeasures will differ depending on whether the holes are material-related or process-related. It is important to examine the actual items alongside the process records.
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basic information
Pinhole countermeasures, degreasing management, moisture residue, air inclusion, poor rust prevention, poor metal coating.
Price range
Delivery Time
Applications/Examples of results
Improvement of pinholes in automotive parts, construction hardware, industrial machinery, and metal products, as well as measures for appearance defects.
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.
