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For More Info Call:
800-882-5543
John Tracy x. 3806 |
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When you weld galvanized steel tubing,
all protective coatings are vaporized, thus leaving a raw, unprotected
area in the weld zone. Salt spray tests have proven that powder
coating over zinc could increase the product life 4-6 times. For
customers who powder coat, and are concerned about corrosion
protection in the weld zone, we would like to suggest four cold
galvanizing compounds that are heat resistant (up to 750° F) and act
as a primer for powder coating. They are: ZRC cold galvanizing
compound (battleship gray); ZRC Galvilite cold galvanizing compound
(shiny); Rustolastic #24-A-120 (sales code 073258); Kalcor 75% zinc
dust epoxy primer #61-2373.
Allied's galvanized tube products are protected by a clear organic top
coating which provides excellent adhesion properties to most
thermo-set powder coatings, as well as to the following air dry and
bake topcoats:
Paints generally compatible with
Allied's clear organic top coat:
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High-bake thermoset acrylic |
High bake alkyd |
Two-part urethane or epoxy |
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High bake polyester |
Solvent-based paints for metals
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Solvent-based paints for wood
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Solvent-based high-solids paint |
Oil-based paints |
Paints for car bodies or
appliances |
Paints requiring individual
evaluation:
Water-based latex paints
PVC, fluorocarbon paints, or when special primers are required
Water-based high-solids paints
Silicone paints and caulk
Water colors, tempera, or artistic paint
Cleaning Flo-Coat® Tubing Prior to Powder Coating
Allied's unique in-line Flo-Coat process provides an excellent
finished tube surface which can be readily post-coated with either a
powder or a liquid coating application and curing process. Allied's
manufacturing process applies three layers of protection on the steel
tube; zinc, conversion coating, and a clear priming polymer, resulting
in a clean and ready-to-coat tube as a final product.
The cleaning of the tube surface for post painting or powder coating
is required only for the removal of the surface contaminants deposited
on the tube surface during storage, transit, handling, or processing.
No additional pre-treatment is required for improving the coating
adhesion over Allied's products.
Benefits of using Allied's Galvanized Products when Powder Coating
If a surface grinding process is required in your powder coating
operation, it demands additional manpower and maintenance expenses.
With Allied's galvanized products, there is no need for the use of
this abrasive cleaning process.
The only cleaning that is required when powder coating over Allied's
galvanized tubing is to remove the dust and dirt that builds up during
storage, transportation, and handling. A light detergent or simply a
warm water wash is all that is needed. If the tubing is not smeared
with a greasy or oily film, a simple wiping action does the job.
The clear third coating on Allied's products acts as a primer for
powder coating and liquid coating applications, exhibiting excellent
adhesion and abrasion characteristics. For those that require a high
temperature baking process, it is heat-stable for the normal curing
cycle (450° for 10-12 minutes).
The advantages of using Allied's triple coated products are numerous
from the processing point of view. However, the biggest benefit is
from the phenomenal corrosion resistance that can be exploited from
the synergism of powder coating over Allied's galvanized
surface.Recent salt spray tests showed that scribed powder coating
over untreated tube peeled 1½" after only 549 hours. No significant
creepage was found at 3000 hours on Allied's Flo-Coat product. |
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