Dry ice cleaning Fundamentals

Step 1, the dry ice particles in the high-pressure air to accelerate to nearly the speed of sound impact surface to be cleaned, instantly vaporized in the impact, the momentum of the impact of dry ice instantly disappear, dry ice particles and clean the surface heat transfer occurs between rapid, resulting in solid CO2 rapidly sublimate into gas.
Step 2, the temperature can damage the different thermal expansion coefficients of the materials combine, dry ice pellets (-78.5 ℃) impact the surface being cleaned, so that dirt and brittle frozen burst, resulting in "cracking", affecting the mechanical properties of adhesion of fouling .
Step 3, the impact of dirt between the cracks dry ice pellets in thousandths of seconds nearly 800 times the volume expansion, the formation of numerous "mini-explosion" that will strip the dirt surface. While grinding with dry ice pellets and impact, air purge cut, so that the dirt from the surface being cleaned is stripped in solid form, so as to achieve the objective of the clean. Because CO2 volatilization, dry ice cleaning process did not produce any secondary waste, leaving only the clear need to be cleaned off the dirt.