The overly rough surface was the culprit of the pinholes; the essence of pre-treatment management.
The balance of roughness affects quality.
【Problem】Excessively high surface roughness leads to poor painting quality. 【Cause】If the blast pressure is too high, deep irregularities are formed, causing the paint to not spread evenly, and air or solvent remains inside the coating, leading to pinholes and uneven film thickness. 【Management Standard】Ensure a surface that is not too rough (approximately Ra 1.0 to 2.0 micrometers). 【Improvement Example】By managing roughness to appropriate levels, the incidence of pinholes significantly decreases.
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basic information
Materials: Iron, Stainless Steel, Aluminum | Issues: Pinholes, Thickness Variation | Standards: Ra1.0 to 2.0μm
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Pre-treatment and surface treatment of metal parts before painting.
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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