Posted on 24 Jul 2008
The heavy plate rolling mill is designed mainly for the
production of plates required in manufacture of high grade pipe, pressure
vessels and structural steels for the energy industry. The plate mill will be
able to roll finished widths of up to 4.9 meters and is scheduled to start
operating in 2010.
For the new 5 meter plate mill Siemens is supplying a high
pressure descaler, finishing mill stand with a maximum rolling force of 10,000
tonnes, comprising of a hydraulic roll gap control system and SmartCrown work
roll bending and shifting system. A Mulpic intensive cooling system with a pre
leveller, a hot plate leveller, a shearing line and a cold leveller complete
the mechanical equipment supply. Siemens are also supplying the engineering for
all the remaining roller tables, cooling beds, transfers and basic engineering
for the required utilities.
In addition to the mechanical equipment, Siemens is
supplying all the electrical equipment and the automation system, including the
sensors. The roll stand is driven by two cylindrical rotor synchronous motors
using Sinamics SM 150 DC link converters with a rated output of 28 MVA. The
automation system includes the basic automation, the technological control
systems and the process automation as well as the HMI system and a higher level
production planning and control system of level 3. This solution supports all
production methods for modern steel grades such as Plan View Control,
thermo-mechanical and nested multiple plate rolling, to increase the
productivity of the rolling mill. The system can be flexibly adapted to changes
in the range of products or the quality requirements and thus offers protection
for the necessary investment involved. On top of this, it plans and ensures a
smooth flow of materials along the entire production process from takeover of
the slabs to delivery of the customer-specified steel plates. All the
components and systems used are part of Siroll PM, the integrated solution for
plate mills. Siemens is also responsible for commissioning and customer
training.
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