STEEL + TECHNOLOGY 01/2019

STEEL TECHNOLOGY | 61
The line has a design capacity of 200,000
t/year. At a process speed of 450 m/min,
materials with thicknesses ranging from
0.12 to 0.36 mm and widths between 700
and 1,230 mm may be processed. The Baosteel
electrolytic metallic coating line is a
combined processing line for electrolytic
tinning and tin-free steel production (ETL/
TFSL). The products are primarily intended
for food industry packing cans.
Cold mill can operate in both,
reduction and temper mode
Also, a newly-built double cold reduction
(DCR) mill supplied by Primetals Technologies
commenced operation. The DCR mill
is designed to process 205,000 t of cold
strip per year and is also part of the tinplate
product structure optimization project at
Baosteel.
The DCR mill can achieve a maximum
line speed of 1,500 m/min. It consists of
a two-stand universal cold mill and is designed
to perform double-cold reduction
as well as one-stand temper rolling. In the
DCR process, the annealed strip, after reduction
in a tandem cold mill, is reduce
rolled on the No. 1 stand and temper rolled
on the No. 2 stand. This process imparts
the strip with its prescribed mechanical
strength. In stand No. 1, work rolls with
two different diameters can be used.
In one-stand temper rolling, the strip is
temper rolled in stand 2 to the prescribed
Front view of Baosteel’s new double cold reduction mill (Photo: Primetals Technologies)
elongation ratios to obtain the desired mechanical
characteristics.
The DCR mill processes strip produced
by a pickling line/tandem cold mill (PLTCM).
Entry strip gauges are between 0.17 mm
and 0.55 mm. Exit gauges range from 0.12
mm to 0.36 mm. Strip width may vary from
700 to 1,230 mm. At a coil diameter of
2,000 mm, maximum coil weight amounts
to 24.15 tons. Steel grades include DR7
to DR10. The processed strip will be used
for the production of beverage can, metal
caps, electrical components, for example.
• Primetals Technologies
Primetals Technologies offers subscription licenses for caster process optimization systems
Primetals Technologies has started to
offer subscription licenses for process
optimization systems to operators of
continuous casting machines, enabling
caster operators to benefit from continuous
developments, improvements and
inventions.
Under these licenses, new releases, upgrades,
updates and fixes are implemented
on a regular basis. The modularity of
the system allows single functions and
models to be subscribed or cancelled,
depending on what is required. Newly
developed features and functions which
become available over time can be implemented
on request.
The included service package provides
remote support in terms of troubleshooting,
consulting, training, tuning
or tweaking. New functions become easier
affordable as the customers only pay
for what they have subscribed for. Clear
and attractive annual fees allow financing
out of continuous casters’ operational
expenses and predicting costs from
year to year. Less allocation of capital is
required when subscribing the system.
The first customer worldwide to sign up
for a subscription license is a US-based
steel maker.
• Primetals Technologies
Representation of the continuous casting
process with a process optimization system
(Picture: Primetals Technologies)
STEEL + TECHNOLOGY 1 (2019) First Issue