LONG PRODUCTS BULLETIN - SMS Meer GmbH

For this modernization the
continuous finishing train of
the universal medium-section
mill (UMIT) has been adapted
to modern market requirements
following an operating
time of 35 years and approx.
16.8 million t of rolled beams
and structural-steel sections.
Advantageous state-of-the-art rolling
technology using CCS ® mill stands. The
novel universal tandem-reversing rolling
technology is now applied also on this
rolling plant instead of continuous finishrolling
which ensures that also smaller
rolling lots can be quickly and efficiently
produced and that specific customer demands
are fulfilled. A replacement of the
rolls is easier so that beams of different dimensions
and grades can be produced in
succession without much loss of time.
The beams will be more accurate to size
and feature a very smooth surface. In the
future it is possible to also roll high-grade
special steel sections on the UMIT mill and
to therefore gain new potential customers.
All this could be achieved by applying the
tandem reversing rolling technology developed
by SMS Meer with universal twohigh
rolling stands in CCS ® design and automatic
hydraulic roll-gap control inclusive
of an automatic quick program change.
Flying shear and elevated roller tables.
The existing flying shear for cutting the
rolling stock in cooling-bed lengths has additionally
been replaced by a more powerful
four-crank shear. Owing to the use of
elevated roller tables up- and downstream
of the tandem reversing mill group, bars at
a length of more than 200 m can be rolled
out in spite of a limited bay length.
Supply including planning and supervision. The scope of supply
of SMS Meer included in addition to the supply and startup of
all mechanical equipment also the supply of piping, auxiliaries and
safety equipment as well as the disassembly and assembly of the
facilities and the foundations. Included in our scope of supply are
planning and supervision services as well as customer’s training.
Altogether 3,000 t of equipment dismantled. Thanks to an extensive
detail planning and partial pre-building of the roll stands on
site during production, the modernization and the cold commissioning
could be realized during a shutdown period of six weeks.
During this time about 3,000 t of equipment was dismantled and
the new facilities were mounted and tested.
25,000 t of salable products rolled after only 18 days. After the
mill had been taken into operation on September 1, 2009, it could
be ramped up very rapidly while a number of beams and dimensions
were “entered” from the very beginning. During an initial 18
days already 15,000 t of salable products were rolled.
Now, large beams with a web height of up to 450 mm. An extended
product range comprises beams with a web height of up to
450 mm and a flange width of 260 mm. Channels up to 400 mm,
equal and unequal angles up to 250 mm and a number of special
steel sections can additionally be rolled.
Modernization project of the last two years completed. In connection
with the startup of the CRS ® roller straightener in 2008 the
upgraded mill train is able to fulfill today’s and future market demands
with regard to flexibility, profitability and quality. Due to the
upgrade and the modernization of key facilities of the mill train by
SMS Meer over the last two years, the modernization project
“UMIT 2010“ has been completed and the technological leadership
of Peiner Träger GmbH has been guaranteed.
CRS ® roller straightener during commissioning.
Newsletter No. 3/2009 39