Shot blasting is a treatment technology that uses a blast wheel to project steel grit and shot at high speeds onto the surface of a material. Compared to other surface treatment technologies, it is faster and more efficient and can be used for part retention or post-pressing casting processes.
The world's first shot blasting machine was manufactured by an American company in the 1930s. Shot blasting equipment production in China began in the 1950s, largely modeled after Soviet technology.
Shot blasting machines can also be used to remove burrs, film, and rust that may affect the integrity, appearance, or definition of a part. Shot blasting machines can also be used to remove surface contaminants from a part's coating and provide a surface profile that enhances coating adhesion, thereby strengthening the workpiece.
Shot blasting differs from shot peening in that it is used to reduce part fatigue life, increase differential surface stress, enhance component strength, or prevent fretting.
