An automatic shot blasting machine is a piece of automated equipment that utilises high-speed projectiles such as steel shot and steel grit to remove rust, scale, sand, and burrs from the surface of workpieces, as well as to perform surface strengthening. The equipment propels abrasives at high speed onto the workpiece surface via a shot blasting wheel, effectively removing welding slag, rust, scale and other deposits. This ensures the workpiece surface meets the specified cleanliness and surface roughness requirements, providing an excellent surface preparation for subsequent processes such as spray painting, powder coating, electroplating or anti-corrosion treatment.

The equipment primarily comprises a shot blasting chamber, shot blasting machines, a workpiece conveyor system, a shot recycling system, a separator, a dust extraction system and an electrical control system. Depending on the structure, dimensions and production cycle of the workpieces, the system can be configured in various configurations—such as roller conveyor, hook-type, track-type, turntable or overhead conveyor—to enable continuous, batch-based automated production.

Automatic shot blasting machines are characterised by high cleaning efficiency, consistent results, a high degree of automation and reduced physical strain on operators. The equipment features a fully enclosed operating structure and is fitted with a high-efficiency dust extraction system, which effectively controls dust and shot spillage, thereby improving the working environment. Furthermore, by optimising the angle of the shot blasting units, the shot flow rate and the conveyor speed, the machine ensures that all parts of the workpiece are cleaned uniformly.

This equipment is widely used in industries such as steel structures, construction machinery, automotive components, castings, forgings, steel plates and sections, rail transport, shipbuilding and mechanical equipment, and is suitable for the surface pre-treatment and strengthening of all types of metal workpieces.