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Cold
Rolling Complex
Avon
Ispat & Power Limited (Steel Strips
Div.) located on the main G.T. Road at Ludhiana,
manufactures cold rolled coils by using most modern
& highly advanced equipments.
The
cold rolling complex consists of three sophisticated
cold rolling mills backed up with a HR slitter, continues
pickling line, batch annealing furnaces,
skin pass mill for better surface finish, CR slitter
& an automated cut to length line. Brief
description of the equipment installed at the complex
are as under:
Continuous
Pickling Line
After slitting the HR coils (the basic raw material),
is passed through a Continuous Pickling Line (CPL) to
remove the oxides / rust or scales from the strip
surface, thereby enabling further reduction of
thickness to the desired level in the Cold Rolling
Mills.
Batch
Annealing Furnace
By annealing the cold rolled coils the desired
properties in the finished coils are obtained by
heating the material to a pre-determined temperature
in a protected atmosphere and soaked for a specified
time, before it is cooled to room temperature. This
gives uniform properties throughout the coil and the
desired microstructure of the finished product with a
bright finish.
Skin Pass Mill
After the cold rolled coils are annealed, the strips
are skin passed to improve the flatness and remove the
superficial stresses over the strips. Anti-rust oil is
sprayed on the strip surface for protection from rust.
Cold Rolled Coils Slitter
In order to obtain uniform width throughout the coil,
the edges are trimmed in the CR slitter
Cut-to-Length
Line
In Cut-To-Length Line (CTL), slitted coils are sheared
to the desired length as per customer's requirement
with very close tolerances.
End
applications of Cold rolled coils / sheets
- Precision
Tubes
- Bicycle
/ auto rims
- Deep
/ Extra deep drawn auto components for auto sector
- Material
handling system
- White
goods sector
- Furniture
& office equipment
Various
grades rolled along with their specifications and
dimensional tolerances are detailed as under
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