What are the methods for rust removal on cars?
1 Answers
Rust removal methods mainly include manual rust removal, mechanical rust removal, flame treatment rust removal, and chemical rust removal. The specific methods are as follows: 1. Manual rust removal: (1) Brushing: Brushing involves using a high-elasticity steel brush or copper brush to scrape off rust, oxide scales, and dirt on the metal surface. (2) Polishing: Polishing uses polishing wheels and polishing paste as fine abrasives to perform slight cutting and grinding on the metal surface to remove rust and minor surface irregularities. (3) Grinding: Grinding involves using sandpaper, sandcloth, or grinding wheels coated with abrasives like aluminum oxide and silicon carbide to remove rust or oxide scales from the metal surface. (4) Barrel tumbling: Barrel tumbling uses a rotating drum filled with abrasives and parts, driven by an electric motor, where parts continuously tumble and rub against the abrasives to remove burrs, oxide scales, and rust caused by casting or stamping. (5) High-pressure water treatment: High-pressure water treatment uses the impact force of high-pressure water jets for rust removal, which is a relatively new rust removal process suitable for large-scale metal rust, oxide scales, and old coatings. 2. Mechanical rust removal: (1) Sandblasting: Sandblasting is divided into dry sandblasting and wet sandblasting. (2) Shot blasting: Shot blasting equipment is categorized into intermittent and continuous operation types. 3. Flame treatment rust removal: Flame treatment rust removal uses an oxyacetylene torch to heat deep rust spots that are difficult to remove manually, altering the chemical composition of the rust through high temperatures to achieve rust removal. 4. Chemical rust removal: Chemical rust removal methods include acid pickling rust removal, comprehensive rust removal, alkaline rust removal, electrolytic rust removal, and pollution-free cyclic rust removal.
