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What is the difference between sand blasting machine and a shot blasting machine? Today, qdbh machinery has sorted out and summarized some materials. Next, we will tell you their differences and uses.
The sandblasting machine is powered by compressed air, which impacts the surface of the workpiece with sand (carborundum, corundum, etc.) to change the mechanical properties of the outer surface of the workpiece. There are many types of sand blasting room for sale. However, the ultimate goal is to improve the fatigue resistance of the workpiece, increase the adhesion between workpiece and the coating, and extend the durability of the coating film. It is also conducive to the leveling and decoration of the coating, as well as remove the impurities, variegated colors and oxide layers on the surface. At the same time, it can also roughen the surface of the medium, eliminate the residual stress of the workpiece and improve the surface hardness of the substrate.
The shot blasting machine uses an electric high-speed rotating impeller to throw small steel shots or small iron shots out to hit the surface of the part at a high speed, so the oxide layer on the surface of the part can be removed. At the same time, the steel shot or iron shot hits the surface of the part at a high speed, causing the crystal lattice on the surface of the part to be deformed and increasing the surface hardness. This is a way to clean the surface of the part. Industrial shot blasting machine is often used for cleaning the surface of castings or strengthening the surface of parts.
Shot blasting and sandblasting are widely used in repairing and shipbuilding industry. However, both shot blasting and sand blasting use compressed air. Of course, it is not necessary to use high-speed impeller for shot blasting.