
Tube wall covered with chromium enhanced studs

Close-up of above

Typical in-house studding operation

Chromized studded wall panel - smelt spout opening

Close-up of chromized studs

Typical wear pattern after 2 to 3 years of operation
(note conical shape of studs)

Typical restudded wall - chromized studs

Chrome Seal Studs after 5 years exposure (note that studs
are still cylindrical)
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ATC
invented and is the sole supplier of chromium-enhanced
studs. The process involves the diffusion controlled
enrichment of component surfaces with chromium to impart superior
levels of corrosion and/or erosion resistance. ATC pioneered
the development of the process for use in both the Pulp and
Paper and Utility industries. The
Chrome Seal "R" Stud has been installed in a number
of Chemical Recovery Boilers in the U.S. and Canada.
Because
all of the chromium-enhanced studs which have been installed
to date have been produced by ATC, ATC is willing to honor
the warranty on any chromium-enhanced studs installed by another
vendor. Confident that the quality of the studs produced using
ATC's Chrome-Seal process is superior to anything that can
be offered by other vendors, ATC is willing to offer a Five
Year Warranty on Chrome-Seal stud performance.
In
addition to the original chromium-enhanced stud which has
found wide application in many recovery boilers, ATC has developed
a new and more versatile stud that offers protection from
both corrosion and erosion. This is the Chrome-Seal "C"
Stud.
ATC's
Chrome-Seal studs have been installed and are performing successfully
in the following chemical recovery boilers.
-Appleton
Paper
-Boise Cascade
-Bowater-3 units
-Crown Vantage
-Georgia Pacific-2 units
-International Paper-3 units
-Interstate Paper
-ITT Rayonier
-Smurfit Stone Container Corp.
-Pope & Talbot
-Simpson Paper
-Skeena Celulose, Prince Rupert, B.C.
-Stone Container-3 units
- Weyerhaeuser
-Willamette Industries
-Fort James Corp.
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