Shot throws using a high-speed projectile casting surface cleaning or strengthening of foundry equipment. With high efficiency, low cost, and strengthen, highlighting the advantages of environmental protection, it is the strength of the metal material surface rust ideal for strengthening and decontamination. Features? High degree of automation, shot, workpiece feed, pellets circulation, dust filter is automatically completed? Descaling the surface coat of paint and other impurities, exposing the metal color, reached the national standard treatment rating? Eliminate stress, improve workpiece fatigue strength and tensile stress corrosion? obtain a certain coating roughness of the surface to enhance the adhesion of the coating, spray extend life and improve the overall quality of the workpiece surface and internal? This machine has high efficiency, low cost strengthen, highlighting the advantages of environmental protection, strengthening metal surface strength of the material and ideal rust decontamination equipment. Device has a number of models, specific selection by the workpiece size and job requirements and the set.