Continuous Annealing Line

Contact 248.267.2603 for sales assistance.

SHIPPING & RECEIVING Cold-reduced coils are received and
shipped by covered rail and truck.

50-ton overhead, remote-controlled
cranes unload and place incoming
coils onto transfer cars, which move
them into the automated warehouse.
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AUTOMATED WAREHOUSE Incoming coils are assigned a storage
location and delivered to the entry
coil saddles according to the
production sequence.

Automated cranes select coils based
upon production schedules and place
them onto the transfer car in the
appropriate sequence for the line.
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ENTRY/CLEANER An incoming coil is loaded onto one
of the two pay-off reels.

While a coil is being processed on one
reel, another is being prepared to be
welded from the other reel.

The entry section is stopped to weld the
head end of a new coil to the tail end of
the coil being processed, beginning the
continuous process operation.

The entry accumulator stores the steel
sheet to enable welding and maintaining
the continuous process operation.

The cleaner removes mill oils and iron
fines before the steel sheet enters the
annealing furnace.
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ENVIRONMENTAL
OPERATIONS
Environmental operations includes
equipment that controls chemical
supply, cooling water and waste
water treatment systems to support
line operation.

The waste water treatment system
utilizes ultra filtration and reverse
osmosis equipment for water
reclamation from two waste streams
with up to 80 percent water recovery
and reuse.
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FURNACE & WATER
QUENCH
In the annealing furnace, the steel sheet
is heated in a reducing atmosphere to
specific temperatures.

Multiple cooling configurations are
available depending on grade:

State-of-the-art water quench
technology, the most aggressive
cooling rate, is used for lean-alloy and
easily weldable grades (AHSS, UHSS).

Rapid gas jet cooling can be used
for intermediate cooling rates.

After quenching, the steel sheet can be
reheated and tempered.
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TEMPER ROLLING /
TENSION LEVELING
The temper rolling mill imparts required
surface roughness and appearance,
and limits yield-point elongation by a
controlled compression and elongation
of the steel sheet.

The tension leveler extends the steel
sheet over bending rolls to produce
superior flatness – vital for the
efficient fabrication of lightweight
automotive parts.
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DELIVERY The delivery accumulator stores the
steel sheet while the coil is cut and
discharged to maintain continuous
process operation.

A surface inspection system constantly
records the steel sheet’s surface
condition in addition to visual inspection
by quality assurance personnel.

A high-speed delivery shear cuts the
coil to customer specifications as well
as cuts samples for quality
assurance testing.

Two tension reels, one operating and
one stand-by, wind the coil to the
required tension.

A coil car removes the processed coil
from the tension reel; the coil is
transported for further processing at
the recoil line, packaging and to the
shipping bay for delivery to
the customer.

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RECOIL The recoil line will recondition
and side trim coils to customer
width requirements.
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PACKAGING Finished product is banded and
wrapped according to customer
specifications.

Each coil is provided with edge
protection and stretch wrapped.
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