Uses high-speed rotating blades inside an enclosure equipped with a dust collector to propel abrasive against the surface to be cleaned. Removes rust, paint, and mill scale. Abrasives include steel shot, steel grit, cut wire, and chilled iron grit. Surface to be cleaned is usually passed through the enclosure while rotating blade assembly remains fixed. Can also be used in the field with special adaptors where rotating blade assembly moves across a stationary work surface.
- Enclosed systems typically used for uniform-sized parts
(e.g., valves, pipes, or steel sections). Small hand-held units developed for
use on bridges and similar structures. Field versions used for large, flat,
horizontal surfaces (e.g., ship decks). Some designed for use on large vertical
surfaces (ship hulls and storage tanks).
- Abrasives are retrieved and recycled (continuously recovered, cleaned, and
- Very limited to no contact with airborne dust or high velocity particles
(little abrasive or paint debris escapes).