Surface World July 2019 Surface World July 2019 | Page 184
ECOCLEAN
Flexible 10 – 16 bar spray cleaning solution for solvent-based machines
Solvent based cleaning at high pressure
Increasing demands on cleanliness,
in terms of freedom from both
particulate and fi lm-type contam-
inants, call for the use of adapted
cleaning solutions. These now
include a new spray cleaning
system for solvent-based cleaning
machines by Ecoclean. With this
process option, spray processes
and injection flood washing can
be performed at adjustable
pressures between 10 and
16 bar via two spraying bars.
The additional cleaning capability
delivers markedly improved cleaning
results on geometrically complex
parts and bulk-cleaned items.
Spray cleaning systems are already a feature on
many solvent-based cleaning machines today.
However, their spraying pressure is commonly in the
range of 2 – 3 bar. With densely packed bulk items
and geometrically complex workpieces exhibiting
undercuts, threaded holes and blind holes – and, at
times, parts obtained by additive manufacturing –
that pressure will not suffice to achieve increased
standards of cleanliness, i.e., an effective removal
of film-type and/or particulate contaminants.
This is because downstream processes such as
coating, adhesive bonding and heat treatment
require significantly cleaner surfaces today.
Ecoclean GmbH has responded to this trend by
developing a so-called high-pressure spraying
system for solvent-based cleaning machines.
This system allows spraying processes and injection
flood washing with hydrocarbons or modified
alcohols to be conducted at 10 – 16 bar pressure.
Flexibly adaptable spraying processes
For the high-pressure spray cleaning option, the
cleaning machine – e.g., an EcoCcore model –
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The new high-pressure spray cleaning option for
solvent-based cleaning machines such as the EcoCcore
allows spraying processes and injection fl ood washing
to be performed at adjustable pressures of up to 16
bars. Markedly improved cleaning results are thus
achieved with geometrically complex parts and
bulk-cleaned items.
is equipped with a high-pressure pump and
additional spraying bars in addition to any 2 – 3
bar spraying device that may already be fitted. One
spraying bar is mounted on the interior wall of the
work chamber. The second is placed centrally in the
work chamber to provide both interior or exterior
spraying, either simultaneously or in an alternating
pattern. The spray pressure is adjusted via the
high-pressure pump, which is controlled by variable-
frequency drive. The number of nozzles and the
product movement can be conveniently adapted to
optimize the spraying process for a given part size
and geometry. Moreover, this sophisticated and
easy-to-handle technology supports the use
of various nozzles matched to the specific
application in terms of size and jet shape.
As usual, the pressure, spray duration, spraying
mode (simultaneous or alternating) and product
movement can be defined in a part-specific cleaning
program and stored in the machine controller.
Enhanced cleanliness of oriented or bulk parts
For the interior and exterior spraying step, the parts
– whether oriented or bulk – are positioned and
secured in special carriers. With oriented parts the
cleaning medium can thus be selectively directed at
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