What is Coldry Blasting (CDB)?
Coldry
cleaning is a revolutionary cleaning process using solid CO2 (also known as
Coldry or dry ice) pellets. It is primarily used for industrial use, in many applications.
Coldry cleaning machines use compressed air to accelerate Coldry pellets to a high
velocity, and propel them on the surface to be cleaned. When the pellets impact
a surface having a thick and tightly bonded layer of surface contamination, the
Coldry creates a layer between the surface and the surface contamination. When the
solid Coldry sublimes into vapour it expands rapidly and lifts off the contaminants,
ensuring non-abrasive cleaning.
At
the same time, it does not leave any residue, hazardous waste or toxic fumes. So
the process is environment friendly and provides a fast and effective alternative
to traditional methods of industrial cleaning. It is quickly becoming favored for
environmental, hygienic as well as productivity reasons.
The Cleaning Effect of Coldry
1. Kinetic Effect: When Coldry pellets are accelerated in a jet of compressed
air and strike a surface at the speed of sound, they crack and loosen the coating
on the surface being treated.
2. Thermal Effect: Coldry penetrates and generates a sudden temperature decrease
(thermal shock) on both the contaminant and the substrate. The different materials
contract unequally so the adherence between them is broken. The contaminant layer
cracks even more and begins to loosen from the substrate.
3. . Sublimation Effect: Coldry penetrates the coating and immediately sublimes
(passes direct from solid to vapour state). This results in a 700-fold increase
in volume, an explosive effect that lifts the coating off the surface.
4. The gas dissipates, leaving the treated surface CLEAN, INTACT AND DRY.
How Does The Blaster Machine Work?
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