The work of using compressed air as the power to push the abrasive to the surface of the workpiece for treatment is called sandblasting, which is what we often say shot peening cleaning and shot peening strengthening treatment. Brown corundum Because sand was the only abrasive that could be used in the early days of shot blasting technology, shot blasting was called sand blasting at that time and for a long time thereafter.
Among the various surface pretreatment methods, sandblasting (shot peening cleaning) has the most thorough effect, the strongest adaptability, and the widest range of applications, because: cleaning the steel surface is the fastest and most thorough; Only sandblasting can be rated with 4 levels of cleaning that are acceptable to everyone; Abrasive blasting can clean surfaces that are often difficult to clean, and there are special tools that can clean the inner surface of pipes with the lowest cost of sandblasting.
Sandblasting can make the cleaned surface obtain the required cleanliness and make the surface get a certain roughness at the same time, and improve the adhesion of the coating on the basic surface. No matter how good the paint is, it cannot adhere well to the surface of the workpiece that has not been surface treated for a long time. The purpose of surface pretreatment is to clean the surface and generate the roughness needed to “lock” the coating on the surface. After the surface of the sandblasted workpiece is coated with an industrial coating with good performance, the coating life can be more than 3.5 times higher than that of the same quality coating on the surface after other treatment methods. Another advantage of sandblasting (shot peening cleaning) is that the surface roughness can be determined in advance according to the requirements and easily achieved during the cleaning process.
The brown corundum abrasive for sandblasting has moderate hardness, high bulk density, no free silica, significant ratio and good toughness. Brown corundum is an ideal “environmentally friendly” sandblasting material, which is widely used in aluminum profiles, copper profiles, glass, washed jeans precision molds and other fields.