Dry Ice blasting is a clean on-site process, which offers decreased downtime for equipment. Downtime was once measured in days and now is measured in hours and minutes. Decreased downtown strengthens productivity and increases profitability by getting equipment back to work. Compared to other blasting or cleaning methods such as sandblasting or plastic bead blasting, dry ice blasting does not require cleaning up of a blasting medium and leaves no chemical residues which could potentially harm equipment. Dry Ice blasting is far more effective and faster than cleaning by hand.
Callaway Industrial Services dry ice cleaning service entails using CO2 at minus 109.3° in the form of small, rice size pellets of dry ice shooting them out of a jet nozzle with compressed air. It works somewhat like sandblasting or high-pressure water or steam blasting, with superior results. The frigid temperature of the dry ice against the material to be removed, causes it to shrink and lose adhesion from its sub surface. Additionally, when some of of dry ice penetrates through the unwanted foreign material to be removed, the dry ice evaporates. The warmer sub surface causes the dry ice to convert back into carbon dioxide gas. The gas has 800 times greater volume and expands behind the material speeding up its removal.
Paint, oil, grease, asphalt, tar, decals, soot, dirt, ink, resins, barnacles, coolant, mildew and adhesives are some of the materials removed by this procedure. Only the removed material must be disposed of, as the dry ice sublimes into the atmosphere. This method is superior to sandblasting, because the dry ice is soft enough not to pit or damage the underlying surface.
The dry ice sublimes quickly into the air and only the removed material must be cleaned up. Dry Ice blasting eliminates equipment damage in two ways. First, dry ice does not erode or wear away the targeted surface as traditional grit media and even wire brushes do. This means that surface integrity and critical tolerances are preserved and equipment will not have to be replaced due to surface erosion common with sand, glass beads, and other abrasive media. Second, with traditional cleaning methods, equipment is often damaged (bumped, dropped, etc.) while in transit to or from the dedicated cleaning area. Instead, most equipment and machinery can be cleaned while in place.
Dry ice blasting is also more efficient then your standard steam and water blasting process for several reasons:
- All electrical parts and generators can be immediately put back into service and used without waiting for them to dry.
- Radioactive contaminate removal doesn’t require large storage containers for contaminated water.
- Mildew and mold removal are far more complete with less chance of regeneration because of water vapor or moisture.
- Dry ice blasting removes more algae, sea slime, and mussels on boat hulls, than water blasting, which allows the organic matter to reattach sooner.