What is the purpose of polishing?
1 Answers
The following are the functions of automotive polishing: 1. Used to reduce the surface roughness of the car, obtaining a bright and smooth surface. 2. Removes issues affecting the paint appearance such as the oxidation layer on the paint surface, shallow scratches, and loss of gloss caused by oxidation. Below are the methods for polishing different automotive issues: 1. Defect removal: Spray a small amount of water on the paint surface, use P1500 pyramid sandpaper with a dry grinder to sand the entire surface once in all directions (up, down, left, right) until the paint surface becomes matte; after sanding, use a rubber squeegee to scrape off the white foam on the surface, observe the paint surface to identify prominent defects, then spray a small amount of water on the sanding disc to remove the defects. 2. Overly fine paint surface: Use a dry grinder with P3000 pyramid sanding disc and a dry sanding soft pad to finely sand the overly fine paint surface, spray a certain amount of water on the sanding disc and paint surface, and sand the entire paint surface twice in each direction (up, down, left, right) at a faster speed. After sanding, use a rubber squeegee to scrape off the surface water and white foam. Quality standard: The paint surface should be free of defects such as oxidation layers and scratches. 3. Coarse wax polishing: Further removes surface sanding marks after sandpaper grinding, restoring the paint surface's smoothness and initial gloss. Apply wax evenly on a certain area of the paint surface, with the polisher speed controlled between 1200-2000 RPM. Initially, apply medium to high pressure to the polishing pad to polish the paint surface at a uniform speed. Observe the paint surface, and once the sanding marks are significantly removed, reduce the pressure to remove the wax marks, restoring some gloss to the paint surface. After polishing, use a microfiber cloth to clean off any residual coarse wax and dust from the paint surface.
