Abrasive jet machining
Shot blasting is a mechanical surface treatment process that involves the high-speed projection of metallic abrasives (commonly steel shot or grit) onto a metal surface to clean, strengthen, or prepare it for further processing. Unlike sandblasting, shot blasting uses round or angular metallic particles that provide more intense and targeted surface impact.
The process is performed in specialized shot blasting machines, which can be automatic or semi-automatic systems such as blast cabinets, tumble blasters, or conveyor-type machines. The abrasives are propelled using centrifugal wheels or compressed air, impacting the surface to remove scale, rust, paint, or other contaminants and to create a textured surface that improves coating adhesion.
Key advantages of shot blasting:
- Deep and thorough surface cleaning;
- Surface hardening through peening;
- Improved paint and coating adhesion;
- Increases fatigue strength of components;
- Prepares surfaces for welding, bonding, or coating.
Shot blasting is widely used in industries such as automotive, shipbuilding, aerospace, construction, pipeline maintenance, and metal restoration. It ensures a clean, uniform surface finish and enhances the mechanical properties of the treated components.