Sand blasting is a common surface treatment method. Its principle is to use high-speed sand particles to thoroughly remove the oxide layer, dirt, paint and other impurities on the surface of the treated object, so as to restore its surface to a smooth state, create a rough surface structure and provide better adhesion.

Specifically, the process of sand blasting derusting is as follows: first, aim the sand blasting gun with sand particles at the surface of the object to be treated, and spray the sand particles onto the object through high-pressure air. The spraying speed of sand particles is very high, which can impact the surface of objects and completely remove impurities. At the same time, the impact of sand particles can also produce tiny concave-convex structures on the surface of the object, thus increasing the roughness of the surface and improving the adhesion of the coating.

The principle of sand blasting rust removal is inseparable from the selection of sand particles and the control of injection parameters. The choice of sand type and particle size should be determined according to the nature and surface requirements of the treated object. Blasting parameters include blasting pressure, blasting distance and blasting time. Reasonable adjustment of these parameters can ensure the quality and stability of sandblasting rust removal effect.

In a word, sandblasting derusting is to remove impurities and improve surface roughness by impacting the surface of an object with high-speed sand particles, so as to achieve the purpose of derusting and surface treatment. This method is widely used in industrial fields, which can effectively improve the surface quality of objects and enhance the durability and adhesion of materials.