Abstract:
Dry Ice is Carbon Dioxide (CO2) in solid form. Cold ice particles
(approx -780
C) can be blasted on the surfaces to be cleaned with
compressed air. This leads to thermal tension in the deposits, causing
cracks and embitterment, in turn breaking off the contaminants. This
technique is very gentle and environment friendly. No harmful blasting
agents/ residues such as waste water or granules are left behind, as solid
CO2 goes backs into the air in gaseous state after strike.
The same technique has been applied first time to clean the bore of
the gun barrel. With many others, the main contaminant left in the bore is
copper. For which a lot of effort and resources are required to clean. The
copper is easily removed by dry ice blasting.
In current research paper, a complete study on the application of
dry ice, its comparison with other blasting techniques and its
environmental effects are carried out. A practical / demonstration of gun
bore cleaning with dry ice blasting were carried out in HIT with the
cooperation of a private firm PAIE. After the demonstration, on the bases
of results obtained, certain recommendations were given. The CFD
analyses of the given recommendations were carried out. Moreover the
effect of dry ice blasting on parent material were also studied in detail and
then proved practically and numerically.
