MIL-HDBK-1110
Figure 1
Schematic Drawing Illustrating Components of Conventional
Abrasive Blasting Equipment
c) Vacuum. Vacuum blasting systems collect the spent
abrasives and removed material, immediately adjacent to the point
of impact by means of a vacuum line and shroud surrounding the
blasting nozzle. Abrasives are usually recycled. Production is
slower than open blasting and may be difficult on irregularly
shaped surfaces, although shrouds are available for non-flat
surfaces. The amount of debris entering the air and the amount
of cleanup is kept to a minimum if the work is done properly
(e.g., the shroud is kept against the surface). This procedure
is often used in areas where debris from open air blasting or wet
blasting cannot be tolerated.
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