1, manual descaling
Manual rust removal is a relatively primitive rust removal method. Use emery cloth, sandpaper, scraper, wire brush, hammer chisel and other tools to remove rust, scale and impurities by hand shoveling, sanding, scraping and sweeping. . Manual rust removal is labor-intensive, low work obedience, poor labor cherishment, and the appearance of cleaned metal is usually still rusty, and the quality is not stable. However, this method of rust removal is simple and adaptable, and it is still a common rust removal method.
2, machine polishing machine polishing is to use the power of mechanical drive to remove the rust layer by impact and friction. For example, by fixing emery cloth, sandpaper, abrasive paste, wire brush, etc. on the wheel, the rusty part of the metal can be polished and polished when the wheel rotates to remove the rust. Commonly used tools include electric grinding wheels, pneumatic brushes, electric brushes, rust removal guns, and needle beam rust removers. Different tools have different advantages and disadvantages. For example, the needle bundle rust remover is a small pneumatic tool with a needle bundle. The needle bundle can be adjusted automatically according to different curved surfaces. It is suitable for bending, narrow, uneven and corner seams. The oxide scale, rust layer, old coating film and welding slag etc. can be wiped out with a needle beam rust remover. The quality is better, the energy consumption is less, the Google keyword ranking, the operation is simple, and the compliance is higher than manual rust removal
3, mechanical peeling
Because metal rust is mostly a loose, porous solid substance attached to the appearance of the metal, it is not firmly combined with the base metal. Under the action of external force, the rust will be peeled off the metal body, which is physical rust removal Important principles. The application of external force can be carried out by sandblasting, shot blasting, grinding, polishing and other methods
4. Chemical ablation
Because the composition of metal corrosion products are mostly metal oxides or hydroxides, they can easily react with acids
