Surface roughness is the cause of all adhesion failures and the truth behind the delamination chain.
The truth about surface roughness that causes painting defects.
[Problem] Insufficient surface roughness significantly reduces coating adhesion. [Cause] Many judgments are made based on the appearance being clean, assuming there is no problem / If the surface is too smooth, the paint does not penetrate sufficiently / This has a particularly large impact on stainless steel and aluminum materials / It may manifest as coating peeling a few months later. [Management Standards] Surface roughness should be around Ra 1.0 to 2.0 micrometers. [Improvement Example] By managing surface roughness numerically, adhesion can be greatly improved.
basic information
Materials: Iron, Stainless Steel, Aluminum | Issues: Poor adhesion, Paint film peeling | Standard: Ra1.0 to 2.0μm
Price range
Delivery Time
Applications/Examples of results
Pre-treatment and surface treatment of metal parts before painting
Related Videos
catalog（1）
Download All Catalogs
Distributors
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.