Do you know the difference between sandblasting and shotblasting?

     What is the difference between sandblasting and shotblasting? Did someone say it's not the same? Actually it is not the same, sandblasting and shot blasting are two different processes.

     Sandblasting uses compressed air as the driving force, so that the sand to form a high-speed jet beam, a strong jet to the surface of the workpiece needs to be treated, the use of sand on the surface of the workpiece impact and cutting effect, so as to knock off the dirt on the surface of the workpiece, sandblasting medium used is with angular sand particles, such as quartz sand, emery, iron sand, etc.. Sand blasting is generally applicable to the workpiece surface requirements of the higher cleaning, but sand blasting process produces a large number of silica dust can not be removed will also seriously affect the health of the operator.

       The principle of shot blasting is similar to sand blasting, which also uses compressed air as the driving force to spray a stream of high-speed projectiles onto the surface of the parts, causing plastic deformation of the surface layer of the parts. And the formation of a certain thickness of the reinforced layer, thereby increasing the fatigue strength of the parts, in order to achieve the purpose of cleaning the surface of the workpiece strengthened. The media used in shot blasting is no angular round particles, such as steel shot, glass shot and ceramic shot and so on. Surface treatment with shot blasting striking force, cleaning effect is obvious, but shot blasting can not be processed on thin plate workpiece, easy to make the workpiece deformation, and steel shot blasting to the surface of the workpiece, regardless of shot blasting or shot blasting, will make the metal substrate deformation, so shot blasting is generally used to remove the thickness of not less than 2mm or do not require to maintain the accurate size and contour of the medium-sized, large-scale metal products, as well as castings and forgings on the skin of the oxidation, Rust, sand and old paint film, widely used in large shipyards, heavy machinery factories, automobile factories and so on.

        Sandblasting for the equipment requirements are not high, have a short grinding time, high efficiency, low price, while shot blasting requires the use of more advanced equipment, slower and more expensive. In the existing methods of surface treatment of workpieces, the cleaning effect is good or sandblasting cleaning.