A shot blast machine is a casting equipment that uses high-speed shots ejected by a blast pot to clean or strengthen the surface of castings. The shot blast machine can simultaneously perform shot peening, core removal, and cleaning on castings. In some regions, it is also colloquially referred to as a sandblaster or sandblast machine.

The shot blasting machine is a treatment technique that uses a shot blaster to rapidly propel steel grit or steel shots to impact the surface of a material object. Compared to other surface treatment methods, it is faster, more effective, and can be applied to partially retained or pressed casting processes.

The shot blasting machine can also be used to remove burrs, diaphragms, and rust, which may affect the integrity, appearance, or definition of the object's parts. The machine can also remove surface contaminants from a coated part's surface, providing a profile for increased coating adhesion, thereby reinforcing the workpiece.