DRY - ICE BLASTING TECHNOLOGY
Ecologically friendly technology
Dry Ice Blasting is ecologically friendly. As mentioned, no residual blasting media has to be disposed of and no solvents or chemicals are needed. Dry Ice Blasting leaves no residual blasting media behind because the dry ice pellets sublimate immediately after impact on the surface. Therefore the time and costs associated with disposal of blasting media are eliminated.
WHAT IS DRY ICE?
Dry ice is the name for solid CO2. At atmospheric pressure it has a temperature of approx. -79° C (-110,2 °F). The evaporisation is residue free. Dry ice is non toxic, non flammable, inert, tasteless and odourless. It is white and has a density of approx. 1'500 kg/m3 (93,64 lb/ft3)in its compact form.
- Cleaning of industrial machines and tools
- Paint removal and underside cleaning, walls’ degreasing
- Cleaning of streets, graffiti removal
- Cleaning of buildings, removal of chewing gums
- Blight removal
- Elimination of fire hazard
- Industrial tubes’ and containers’ cleaning
- Lime removing
- Rust removing
- . . . and can be applied in many other areas.
STEPS OF DRY ICE BLASTING
Dry ice cleaning machines or dry ice blasting machines are used in the dry-ice cleaning technology.
The dry ice is shoveled into the machine’s dry ice container which leads it to a compressed air supply.
The ASCOJET Dry Ice Blasting machine accelerates with compressed air the dry ice pellets to a speed of approx. 300 m/s (984,25 ft/s). The pellets hit the object to be cleaned. The surface is shock-frozen in a fraction of a second. Due to the sudden thermo shock generated on the surface to be cleaned, the coating/dirt contracts, becomes brittle and cracks. Due to the cracking of the surface, the pellets can reach under the dirt and remove it. The additional kinetic energy removes the coating/dirt from the surface. Immediately after impact, the pellet sublimates and goes back to atmosphere as a pure gas (CO2) without leaving any moisture behind. The only thing left is the coating/dirt removed from the surface and no blasting media has to be disposed of. Since the hardness of the pellets is only approx. 2 Mohs, the cleaning is virtually non-abrasive, and the surface quality is maintained.