What is the cause of peeling off quickly even after repainting? Removal of old paint film and rust.
Even if you repaint the peeled parts from above, they will peel again. The cause is the remaining old paint film and rust. The concept of stripping to avoid failure in repainting.
Even though I repainted the peeled areas, they peel off again after a while. Is that part just painted over the old layer? ────────────── ■ Cause of Occurrence The old paint film around the peeled area may appear intact, but its adhesion is weak. Underneath, rust spreads and lifts the new paint film. ■ Truth Even if you paint over it, it is only sitting on the weakened old paint film and rust. If the compatibility between the old paint film and the new paint is poor, shrinkage or lifting may occur immediately after application. ■ Improvement Measures The basic approach for repainting is to completely remove the old paint film and rust. After stripping, check the substrate and start over with degreasing and chemical treatment. Parts that are non-conforming or need a color change can also be painted using the same process as new ones after stripping. Eiwa Kogei handles everything from paint film removal through heat treatment and blasting to repainting. Please download and utilize the materials summarizing the key points for process verification.
- Company：永和工芸
- Price：Other
