How does dry ice blasting remove contaminants?
When removing a brittle contaminant such as paint, the process creates a compression tension wave between the coating and the substrate. This wave has enough energy to overcome the bonding strength and literally pop the coating off from the inside out. When removing a malleable or viscous coating such as oil, grease, or wax, the cleaning action is a flushing process similar to high-pressure water. When the particles hit, they compress and mushroom out, creating a high-velocity snow flow that flushes the surface.
