The Challenge
The LeBaron Foundry (an iron castings manufacturer in Brockton, Massachusetts)
needed help to solve a corrosion problem inside their plant's bag houses. |
| The facility holds four bag house units that
receive exhaust fumes from the plant's smelting furnace. Fly ash is removed
by hundreds of tubular bags hanging inside the units. The interior of these
steel compartments experiences highly changing temperatures - from -20°
to over 300° F. This drastic changing of temperatures, referred to as
"thermal cycling," and sulfuric acid corrosion cause protective coatings
to crack and peel. When these coatings fail, rust and corrosion damage eventually
destroy the vessel. Repairs on the bag house units are extremely costly
and replacement is very expensive |
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Four bag house units located
at LeBaron
Foundry, Brockton, Massachusetts |
| In addition, the interior of
the unit couldn't handle the high temperatures or acid concentration. This
caused the coating to delaminate from the substrate, contributing to serious
corrosion damage. There were many areas of widespread rust and corrosion
between hanging bags and around the exhaust outlet. All of the corrosion
and acid damage made it necessary to recoat each year, proving that the
existing treatments simply were not solving the problem. |
The Solution
After trying just about everything to stop the sulfuric acid corrosion in
the plant's bag houses, LeBaron Foundry decided to try Fluorolast WB. One
unit was coated with Fluorolast and one unit was coated with a competitive
coating. A year later, the Fluorolast unit was in great condition -- showing
absolutely no signs of corrosion -- plus there wasn't any discoloration.
The other coating was cracking and peeling, and the unit needed to be re-coated. |
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Fluorolast was the perfect solution to LeBaron Foundry's quest for a material
that has chemical resistance ability as well as the ability to withstand
thermal shock and survive even the harshest of environments. The test between
Fluorolast and the other coating proved Fluorolast's outstanding durability:
it stayed free of cracks, corrosion and peeling. Tom Foley, Plant Engineer
for LeBaron Foundry, said, "we may expect this coating to last several more
years."
Fluorolast coating enabled LeBaron Foundry to focus more on production and
profitability instead of upkeep and maintenance. Recommended strongly by
LeBaron, Fluorolast is an effective solution for the toughest challenges. |
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