Dry ice blasting is similar to sand blasting, plastic bead blasting, or soda blasting where a medium is accelerated in a pressurized air stream to impact a surface to be cleaned or prepared. But that’s where the similarity ends.
Instead of using hard abrasive media to grind on a surface (and damage it), dry ice blasting uses soft dry ice, accelerated at supersonic speeds, and creates mini-explosions on the surface to lift the undesirable item off the underlying substrate without leaving secondary waste.
How does CO2 Blasting Work?
CO2 blasting works because of three primary factors: pellet kinetic energy, thermal shock effect and thermal-kinetic effect. This optimizes blast performance for each application by combining these forces and adjusting:
- compressed air pressure
- blast nozzle type (velocity distribution)
- CO2 pellet size and density
- pellet mass rate and flux density (particles per unit area per second)
Dry ice blasting has many unique and superior benefits over traditional blasting media.
- Non-abrasive & nonflammable
- Approved for use in the food industry
- Can clean items without disassembly
- Safe for electrical/mechanical parts
- Removes residues, paints, oils & biofilms
- Gentle enough to restore damaged books
- Aggressive enough to remove weld slag