Dry Ice Blasting
Looking for an effective and environmentally friendly way to prep, restore and/or clean equipment or a surface, such as brick walls or concrete? Proteck offers dry ice blasting or what is also known as C02 cleaning.
What is dry ice blasting?
It’s similar to sandblasting. However, instead of using hard abrasive media to grind on a surface, 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.
Dry ice blasting eliminates the use of harmful chemicals. Its unique ability to sublimate also means that there are no secondary wastes created that would require additional cleanup.
How does it work?
Phase 1: Pellet Kinetic Energy
The Cold Jet delivery system used by Proteck incorporates supersonic nozzles for surface preparation and coating removal applications. C02 pellets are blasted onto the target surface. Upon impact, they change from a solid to a gas. There is very little impact energy transferred into the coating or substrate, so the Cold Jet blasting process is considered non-abrasive.
Phase 2: Thermal Shock Effect
Dry ice pellets are extremely cold so when they change instantaneously from a solid to a gas, this sudden drop in temperature causes micro-thermal shock to occur between the contaminant and the substrate. The contaminant will then crack, leading to final bond failure at the surface of the substrate.
Phase 3: Thermal-Kinetic Effect
When the pellets hit the surface and turn into a gas, this gas expands to nearly 800 times the volume of the pellets in a few milliseconds, causing what is effectively a micro-explosion at the point of impact. This forces the thermally fractured particles off the surface. As the dry ice disappears, there is only the contaminant particles to clean up – no harsh chemicals.