How Ice Blasting Works

How Does CO2 Blasting Work?

What is ice blasting? If you have heard about this effective cleaning method but have questions about how it works, we have answers. CO2 blasting works because of three primary factors: pellet kinetic energy, thermal shock effect and thermal-kinetic effect. Interstate Carbonic Enterprise Cold Jet 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)
  • Pellet Kinetic Energy

The Interstate Carbonic Enterprise Cold Jet process incorporates high velocity (supersonic) nozzles for surface preparation and coating removal applications. Since kinetic impact force is a product of the pellet mass and velocity over time, the Interstate Carbonic Enterprise Cold Jet delivery system achieves the greatest impact force possible from a solid CO2 pellet by propelling the pellets to the highest velocities attainable in the blasting industry.

Thermal Shock Effect

Instantaneous sublimation (phase change from solid to gas) of CO2 pellet upon impact absorbs maximum heat from the very thin top layer of surface coating or contaminant. Maximum heat is absorbed due to latent heat of sublimation.

Thermal-Kinetic Effect

The combined impact energy dissipation and extremely rapid heat transfer between the pellet and the surface cause instantaneous sublimation of the solid CO2 into gas. The gas expands to nearly 800 times the volume of the pellet in a few milliseconds in what is effectively a “Micro-explosion” at the point of impact.

The “Micro-explosion,” as the pellet changes to gas, is further enhanced for lifting thermally-fractured coating particles from the substrate. This is because of the pellet’s lack of rebound energy, which tends to distribute its mass along the surface during the impact. The CO2 gas expands outward along the surface and its resulting “explosion shock front” effectively provides an area of high pressure focused between the surface and the thermally fractured coating particles. This results in a very efficient lifting force to carry the particles away from the surface.

Discover Interstate Carbonic Enterprise

Contact Interstate Carbonic Enterprise today to speak with an industry expert and choose the best cleaning solution for your industrial printing equipment application. Our team currently services the Texas, Oklahoma, Arkansas, and Louisiana area. With over 30 years of experience within the dry ice blasting industry, we know that we can help you clean your facility and remove any form of contamination. We’ll help you get your facility up a running in no time. Our dedicated team will always follow through with the task at hand, and we uphold such values as responsibility and accountability. When you hire the professionals at Interstate Carbonic, you’ll receive a proven service that’s second to none.

POPULAR QUESTIONS

  • What is dry ice blasting?

    Dry ice blasting is similar to sandblasting, bead blasting, or soda blasting where a media is accelerated in a pressurized air stream (or other inert gas) to impact and clean a surface.

  • How does the process work?

    Unlike other blast media, dry ice has a temperature of -109°F (-78.3°C). Because of the temperature difference between the dry ice particles and the surface being treated, thermal shock occurs during the process of dry ice blasting. This causes a breakdown of the bond between two dissimilar materials.

  • What happens to the contaminate?

    Contaminants can be dry, wet, hard or soft. Dry contaminates will break up into small chips and can be swept up or vacuumed. If the particles are large enough, they do not become airborne. If the contaminate is wet, such as grease or oils, the stream will move or push the liquid away much like a high pressure water stream would, except that the surface where the contaminate was will be dry and clean. To prevent redeposition, the operator should work in a methodical way, from the top down.

HOW CAN WE HELP YOU?