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Sensitive materials such as glass can become damaged from abrasive blasting. When stripping paint from a window frame, for example, it is therefore wise to opt for soda blasting. This technique is also very suitable for removing dirt and grease from facades, woodwork and machine components.
Blasting involves forcible propelling or spraying a stream of abrasive material, such as sand, grit or soda, against a surface under high pressure, thus removing rust, contaminants, mill scale and old layers of paint. The blasting process roughens the surface to create a better bond for paint or a metallized coating.
Contaminants such as grease, bitumen and certain paints can best be removed with dry-ice blasting. The dry-ice blasting process uses compressed air to accelerate frozen carbon dioxide (CO2), which, upon impact, creates a micro-thermal shock that breaks the bond between the contaminant and the substrate.
Steel and concrete floors can be cleaned easily and efficiently with a portable vacuum blasting machine. Vacuum blasting encapsulates and immediately retrieves residue and blast media, keeping the blasting operation dust free.
In engine rooms and electrical installations, for example, dust poses a problem, but vacuum blasting is not possible. Here, sponge blasting provides an excellent alternative to abrasive blasting.
Grit blasting, also known as sandblasting or abrasive blasting, is a process by which an abrasive media is propelled against a substrate using compressed air or a centrifugal wheel.