PRE-TREATMENT AND
POWDER COATING
Deltalight luminaires for both indoor
and outdoor are produced using a
proprietary process based on selected
base materials and finishes to give the
user the pleasure to enjoy their presence
in- and outside the architecture for a
very long time. The applied pre-treatment
and finish on our products is the result of
intensive research, testing and setting up
an inhouse surface protection installation.
We guarantee a thoroughly monitored
process that grants quality for the future.
Especially the quality of our outdoor
range with respect to corrosion protection
can be assured based on a typical
surface protection and finish deployed in
the following 5 topics:
1. Basic materials (Alloy)
2. Pre-treatment:
Titanium based non-organic
conversion layer
3. Powder Coating
4. Hardware
5. Process Control
This dedicated treatment is even
reinforced by 2 individual trademarks:
Deltalight Quali Protect C
This trademark is related to topic 1 and 2.
It covers the protective non-organic
pre-treatment applied to the most
suitable alloys to ensure a long-term
corrosion resistance.
Deltalight Supreme Texture C
This trademark is related to topic 3 to
5 and it covers the final finish of the
product in terms of both weather and UV
resistance.
We achieve this by applying high-end
polyester powder coatings resulting in a
perfect finish and appearance.
Texture stands for the visual or tactile
surface characteristics of a surface
and the disposition or manner of union
of the particles of a body or substance.
Texture does not only relate to the powder
coating itself, but even more the perfect
finish, the appearance and quality of the
product.
BASIC MATERIALS (ALLOY)
For aluminium components we use
selected alloys with the lowest grade
of corrosion inducing contaminants
like cupper, iron etc., while maintaining
the required processability. Non-visible
stainless-steel components mainly used
HARDWARE
Apart from the painted parts that are
used for the assembly of our outdoor
products we assure that all other
components such as bolts,
nuts, washers, screws, brackets, fixation
plates…. are made from the best stainless
steel quality. This to assure the entire
quality of the outdoor luminaires and
to make sure any of the screws can be
untightened during the entire lifetime of
the product for eventual service. Stainless
steel components in contact with
aluminium are assembled with protection
compound to avoid electrochemical
corrosion.
PROCESS CONTROL
All critical process steps in the pre-
treatment and application of the finishing
layer are monitored using SPC (statistical
process control). Deltalight Quali
Protect and Deltalight Supreme Texture
outperform commonly known quality
principles. Stability and effectiveness is
on top of the SPC monitored by filiform
corrosion tests on production samples.
Manufactured with precision The
Deltalight collections are the result of
handcrafted care and industrial expertise.
Each luminaire is designed, engineered
and manufactured to guarantee high,
maintained IP ratings and a long lifetime.
Weatherproof and non-ageing silicone
rubber is used extensively in the range.
It provides excellent sealing qualities
in corrosive and high temperature
environments. Depending on the product,
its design and application needs,
Deltalight uses a 2-component potting
substance, combined with glass gluing
by robot, to guarantee optimum precision
and IP67 rating. Various ranges are further
supported by waterproof installation kits,
including watertight power supplies and
waterproof connector kits.
for mounting surface contact are made
in 316 grade. Seen the importance of
the pure grade of the base material,
Deltalight monitors the composition of
the supplied alloys by means of non-
destructive x-ray photospectrometric
analysis.
PRE-TREATMENT
Apart from the pure grade aluminium
alloy, a dedicated pre-treatment, is
the next step in the finish of exterior
luminaires. The pre-treatment applied
by Deltalight is a procedure that creates
the perfect basis for a high corrosion
resistant product and is achieved in 7
steps. The base process is known and
proven, but the details are the result
of scientific research and process
optimization.
1. The base steps are:
2. Alkaline degreasing
3. Clear water rinsing
4. Deltalight Quali Protect Etching
5. Clear water rinsing
6. Deionized water rinsing
7. Deltalight Quali Protect Titanium
8. Passivation
9. Hot air Drying
POWDER COATING
After the pre-treatment, the Deltalight
outdoor range is covered by an organic
UV resistant polyester thermosetting
powder coating, selected and made
according to Deltalight Supreme Texture
standards. This coating is typical solvent
free which makes painted products direct
and 100% recyclable. The paint is finally
secured after hardening at 200°C.
The used powder coatings are certified
according to European fire and fume
regulations and have specialist
certificates.
20
WE PRODUCE — Process
