The steel structure surface has the old paint the original paint, should use the sand blasting steel structure rust removal construction as far as possible. The method of sand blasting steel structure rust can completely remove rust surface old paint. At the same time, it can remove the sundries attached on the metal surface, the surface after sandblasting can provide good mechanical adhesion for the paint film. But for the place that can sandblast processing, can use artificial machinery to remove rust processing. Tools are usually emery cloth, scraper, hammer chisel, wire brush, angle grinding wheel, grinder so on. The rust removal grade is SA2.5 ST3. Old coatings should be cleaned as much as possible. For old coatings that can be removed, apply a small area before applying a new coating. If there is a base, the old coating should be removed using paint remover. In the design of steel structure engineering, a large number of steel, need a variety of anti-corrosion coatings for coating protection. However, if the steel used in the construction of a large number of rust, service life will be greatly shortened. Steel structure rust directly affect the quality of paint coating, so rust steps are more critical, then next to understand the next steel structure rust matters of note!

1、Manual rust removal is to use some relatively simple tools, such as scrapers, grinding wheels, emery cloth, steel wire brush, etc. , with manual to remove the rust on steel components. This method has low working efficiency, poor working conditions incomplete rust removal.

2、Pickling rust removal, is to be painted steel components immersed in acid pool, using acid to remove oil rust on the surface of components. Pickling process efficiency is also high, more thorough rust removal. But after pickling, clean the components with hot clear water. If there is residual acid, the corrosion of the parts will be more serious.

3、Sand blasting is used to remove rust. Under the pressure of Compressed air, quartz sand iron sand is used to continuously impact the surface of steel components. Rust. This method has high efficiency thorough rust removal, is a better rust removal process.