There are many ways to remove the surface dust, such as sanding, pickling, and so on. We often encounter these kinds in the production process, and we will take a look at the pickling process that day.
The method of removing oxide scale and rust on the steel surface by using an acid solution is called pickling. It is a way to clean the metal surface. It is usually carried out together with a pre-passivating treatment.
The article is usually immersed in an aqueous solution of sulfuric acid or the like to remove a film such as an oxide on the surface of the metal. It is a pre-treatment or intermediate treatment of electroplating, enamel, rolling and other processes.