A shot blasting machine is a casting equipment that uses high-speed projectiles ejected by a shot blaster to clean or reinforce the surface of castings. It can simultaneously perform sand removal, core removal, and cleaning on castings. In some regions, it is also colloquially referred to as a sandblasting machine or sandblasting gun.

The shot blasting machine is a treatment technique that involves the high-speed impact of steel grit or steel shots, propelled by a blasting gun, on the surface of the material object. Compared to other surface treatment methods, it is faster, more effective, and can be applied to partially retained or stamped 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 a part. It can also remove surface contaminants from the coated surface of a part, providing a surface profile that increases coating adhesion, thereby reinforcing the workpiece.