|
 |
| |
|
Table I:
Nozzle Capacity and Performance |
Why and Where
to use Dry-ice Blasting |
|
Nozzle type & size |
Compressed air requirement |
CT sec |
Why: Because it is currently the only
environmentally friendly way to clean
industrial surfaces without abrasion or the
use of chemicals or solvents.
Because the list of chemicals and solvents
that cannot be used or disposed of without
costly restrictions will increase.
Because production machinery and planning
methods will improve the just in time
capabilities of manufacturing plant and
on-line cleaning will be the only way to
avoid costly cleaning stoppages.
Where: On practically all surfaces that can
resist the forces applied by the impingement
of the compressed air and the dry ice
particles, as well as the sublimation force
of the dry ice.
Where conventional cleaning causes unwanted
changes to dimensions and surface finish.
Where conventional cleaning introduces
unwanted moisture, chemical attack or is a
safety hazard. |
|
At 5.5 bar |
CT |
At 7.0 bar |
CT |
At 9.5 bar |
|
m3/min |
sec |
m3/min |
sec |
m3/min |
| |
|
TV250 |
2.5 |
62 |
3.1 |
35 |
4.0 |
29 |
|
TV500 |
3.8 |
40 |
4.7 |
25 |
6.2 |
20 |
|
TV750 |
4.6 |
20 |
5.7 |
17 |
7.5 |
12 |
|
UV250 |
2.2 |
53 |
2.7 |
27 |
3.5 |
19 |
|
UV500 |
3.3 |
34 |
4.1 |
19 |
5.5 |
13 |
|
UV750 |
4.0 |
17 |
5.0 |
13 |
6.6 |
8 |
|
CT is the time taken to
remove a 50 x 60 mm area of standard
Polyester paint from a steel substrate. The
cleaning times for the newly developed
universal (UV) nozzle still have to be
confirmed across the range but proving
trials with the UV750 show faster times are
achieved with less air, indicating an
efficiency improvement of over 30% at 9.5
bar. |
