Stainless steel is often said to peel off quickly even after painting, but if done with the proper painting method, there is no need to worry about it coming off.
"About Stainless Steel" It is an alloy primarily composed of iron (Fe) and chromium (Cr). Chromium combines with oxygen to create a "passivation film" known as chromium oxide. Because it is covered by this passivation film, it has higher corrosion resistance and is less prone to rust compared to regular carbon steel. "Reasons Why Stainless Steel Paint Peels Easily" - Smooth Surface The surface of stainless steel is very smooth, which prevents the paint from adhering properly, leading to peeling. - Presence of Chromium Oxide The chromium contained in stainless steel combines with oxygen to form chromium oxide, which protects the surface with a thin film. This film hinders the adhesion of the paint, making it more likely to peel off.
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"Painting Method for Stainless Steel" 1. Surface Cleaning This is a necessary process for all materials, not just metals and non-ferrous metals. It reliably removes oils, dirt, and debris that have adhered to the surface. The surface is cleaned by wiping with organic solvents, detergents, or degreasers. 2. Primer Treatment This primer treatment is a crucial process that addresses two reasons for easy peeling. The first is that etching is necessary to remove the chromium oxide that protects the surface. Etching can be done using chemicals to dissolve the surface (a chemical method) or by blasting with abrasives to physically grind the surface (a physical method). The second is that polishing is required to create fine scratches on a smooth surface to improve adhesion. If etching is done with blasting, the surface has already changed to one that allows paint to adhere easily, making further polishing unnecessary. However, if etching is done with chemicals, the surface must be polished with a wire brush or sandpaper. 3. Paint Since paint adhesion on stainless steel is low, there is a high possibility that regular paint will peel off quickly. By applying a primer specifically designed for stainless steel, the paint adheres firmly to the surface and does not peel off.
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Turning our customers' troubles into satisfaction. We respond to such customer requests. From "nothing" to "something." Creating "one-of-a-kind" rather than "mass production." It is Harada Ironworks that fulfills those desires. To meet the diverse needs of our customers, we provide a consistent production service from material procurement to painting and installation, assisting in reducing lead times and total costs. With over 70 years of experience, we are dedicated to providing even greater "high added value" to our products through the skills and know-how we have honed. If you have any inquiries regarding production or painting, please feel free to contact us. We look forward to hearing from you.
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Our company manufactures products tailored to the diverse needs of various sites. We respond to customer requests with our capabilities, advantageous location, and thorough quality and delivery management. You can trust us with everything from material ordering to can manufacturing, processing, surface preparation, and painting. Additionally, we have dedicated many years to research and development in rust prevention, establishing a solid technology and facilities as a "rust prevention department," and we also perform tasks such as paint stripping. Please feel free to contact us with any requests.