What is the purpose of car paint polishing?
3 Answers
Car paint polishing serves to eliminate fine scratches on the paint surface, address minor damages and various stains on the car's paint, thereby achieving a glossy finish. Key considerations for car polishing include: 1. The crucial aspect of operating a polishing machine is to maximize the polishing rate to quickly remove the damaged layer caused during grinding; 2. Ensure that the polishing damage layer does not affect the observed structure, meaning it should not create false structures. After car paint polishing, minor defects such as coarse particles, sandpaper marks, flow marks, whitening, and orange peel may appear on the paint film surface. To compensate for these defects, grinding and polishing are typically performed after spraying to enhance the mirror-like effect of the paint film.
I often polish my old car and find it incredibly effective. Polishing primarily removes the oxidized layer and minor scratches from the paint surface. Over time, exposure to sunlight and pollution can cause the paint to yellow and lose its shine, as if covered in a layer of dust. After polishing, the paint regains its original depth and brightness, making the car look brand new. Additionally, it smooths out minor imperfections, preventing moisture and dirt from penetrating and protecting the paint from further corrosion. I do it every few months, followed by waxing for longer-lasting results. Polishing isn’t difficult—just get some quality materials and you can do it at home, saving money and hassle. Be careful not to over-polish, as it may thin the paint. Overall, polishing enhances the car’s appearance and extends its lifespan, keeping it in a youthful condition.
From my observation, the core functions of polishing for automotive paint are protection and restoration. Long-term exposure to UV rays and environmental pollution causes the paint surface to oxidize, forming a dull layer. Polishing gently abrades this layer away, restoring a crystal-clear appearance. Simultaneously, it removes traffic marks and minor scratches, preventing these small issues from escalating into deeper damage. After restoration, the smoother paint surface facilitates better adhesion for subsequent glaze sealing or coating applications, enhancing overall protective performance. During daily driving, acid rain and bird droppings pose hidden risks, and regular polishing can neutralize these threats. I consider this a preventive maintenance measure that helps avoid costly repainting expenses in the future. The key lies in selecting appropriate polishing compounds that won't damage the original paint.
