Peeling paint on aluminum products may be caused by surface roughness. I will explain the pretreatment that affects adhesion.
Aluminum products are lightweight and have excellent corrosion resistance, but they are made of a material that has a smooth surface, making it difficult for coatings to adhere. If the surface roughness is insufficient, adhesion strength may decrease, leading to peeling or chipping after a few months. It is important to create an appropriate roughness through blasting or chemical treatment to increase the contact area with the coating. Before changing the paint, it is necessary to confirm the pre-processes, including degreasing, chemical treatment, and roughness management.
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basic information
Metal coating defect countermeasures, pretreatment management, adhesion failure, pinholes, blisters, quality improvement.
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Applications/Examples of results
Improvement of painting defects in automotive parts, construction hardware, and metal products, and review of the pretreatment process.
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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