How to Prevent Paint from Peeling on Stainless Steel?
2 Answers
To ensure adhesion and protection, preventing paint from peeling on stainless steel requires the use of specialized paint. The details are as follows: 1. Use specialized stainless steel paint: Ordinary paint struggles to adhere to metal surfaces, leading to easy peeling and failure in achieving anti-corrosion and decorative effects. Specialized stainless steel paints, such as epoxy topcoat, fluorocarbon paint, and acrylic paint, are recommended. 2. About fluorocarbon paint: Fluorocarbon paint offers excellent weather resistance, anti-pollution, anti-corrosion, and anti-rust properties. Its film boasts strong chemical resistance, high adhesion, dense structure, and superior anti-permeability, effectively preventing the penetration of moisture, carbon dioxide, and harmful substances. This significantly enhances the anti-corrosion performance and service life of metal materials.
I used to spray stainless steel door handles, but the paint kept peeling off. Later, I figured out some tricks. The surface of stainless steel is too smooth, making the paint prone to slipping and falling off. First, I thoroughly cleaned it, using alcohol or detergent to remove grease and dust. Then, I lightly sanded the surface with fine sandpaper to create small grooves for better adhesion. Next, I applied a special primer for stainless steel, specifically a corrosion-resistant type—this step is crucial and shouldn’t be skipped. When spraying the topcoat, I did it in thin layers, applying multiple times instead of rushing, with 20-minute drying intervals between each layer. The ideal temperature is between 15-25°C, and humidity shouldn’t be too high. After finishing, I coated it with a layer of transparent protective paint to enhance durability. Regular gentle cleaning and avoiding hard impacts help maintain it. This method has saved me a lot of rework time and is very practical.