What is the process flow of sheet metal painting?
2 Answers
Filling the sand marks and micro-pores on the bottom layer of the workpiece to enhance the adhesion of the underlying paint, and also serving as a defect indicator. A very important coating part, preparing a complete and smooth working surface for the topcoat, completing the final step of all primer work. The topcoat is divided into single-layer paint and multi-layer paint, serving as the color-determining layer and decorative protective layer. Single-layer paint is commonly referred to as solid color paint, also known as standard paint, and can be completed in one layer.
I've seen quite a few processes for sheet metal repair and painting, which generally involve several steps. After the car is damaged, first carefully assess the extent of the damage to determine whether it's a dent or rust. Then use a grinder or sandpaper to remove the old paint and rust, ensuring it's completely clean. Repairing the sheet metal is crucial—for example, using filler to smooth out dents and gradually sanding until it's mirror-smooth. Apply primer to protect against rust and shield the panel; this step can't be rushed, and after application, sand it smooth again. Then spray the topcoat, matching the original car color—usually two coats are applied, followed by a clear coat for gloss and protection once the topcoat is semi-dry. The drying phase takes place in a professional baking room or a naturally ventilated area, with timing depending on temperature. Finally, polish the surface to make it shine like new. The entire process typically takes a few days, with each step requiring precision to avoid issues like bubbling or peeling. I recommend choosing an experienced technician to ensure the materials are eco-friendly and durable.
