How Does Dry Ice Blasting Work?

The Basic Process Dry Ice blasting is similar to sand blasting, plastic bead blasting, or soda blasting in that a media is accelerated in a pressurized air stream (or other inert gas) to impact the surface to be cleaned or prepared. With dry ice blasting the media is solid carbon dioxide (CO2) particles. One unique aspect of using dry ice particles as a blast media is that the particles sublimate (vaporize) upon impact with the surface.

The combined impact-energy dissipation and extremely rapid heat transfer between the dry ice pellet and the surface causes the instantaneous sublimation of the solid CO2 / dry ice into gas. The gas then expands to nearly eight hundred times (800x) the volume of the dry ice pellet in a few milliseconds in what is effectively a "micro-explosion" at the point of impact. Because of the solid CO2 vaporizing, the dry ice blasting process does not generate any secondary waste.

All that remains to be collected is the contaminate being removed. As with other ... more.

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