TPT July 2014

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Industry News
July 2014 15
Three-roll RSB technology
BEIMAN Special Steel Co, part of the
Dongbei Special Steel Group, has
concluded a contract with Friedrich
Kocks GmbH & Co KG for the delivery,
assembly and commissioning of a
reducing and sizing block (RSB)
combined with the equipment and
process for temperature-controlled
rolling (LTR).
After positive results and experience
with the operation of the 3-roll RSB in
the combined wire rod and bar mill at
Dalian Special Steel, a second company
belonging to the Dongbei Special
Steel Group decided to expand and
modernise its bar mill by implementing
the 3-roll RSB technology.
After completing the modernisation,
the mill will produce 504,000t/a bars in
SBQ quality within the dimension range
of 16 to 100mm Ø. The new 370mm
RSB in heavy-duty design, which will be
equipped with four stand positions, will
be designed for temperature-controlled
rolling at low temperatures.
The RSB will be operated as finishing
block in the existing bar mill downstream
of the 2-high roughing and intermediate
mill consisting of 20 stands. The 3-roll
block is able to roll any finished size
of the whole product range as straight
length onto the cooling bed out of
a few entry cross-sections from the
roughing and intermediate mill. The
rolling configuration program Bamicon
calculates optimum adjusting values for
motor speed, rolls and guides as well as
gear stages depending on the requested
finished product.
The LTR process with closed-loop
control and corresponding equipment for
the whole mill line is also included in the
order. Kocks is in charge of the process
know-how as well as engineering and
hardware.
For the first time, the Kocks
Microstructure Simulator (KMS)
will be applied as a supplement to
the LTR process. Kocks developed
KMS as a new software program for
process simulation in long product
mills particularly designed for the 3-roll
technology. It simulates the temperature
development of the rolled product,
calculates the quality and quantity of
the micro-structural development, and
predicts the mechanical properties of
the rolled cross-sections.
The scope of supply includes quick
automatic stand change system, stand
and roll workshop with quick roll change,
CAPAS computer-aided system for
precise adjustment of rolls and guides
in the stand, and the remote control of
passes and guides of the 3-roll stands
in the mill line. The total package is
completed by supervision of assembly,
commissioning and training of customer
personnel.
Commissioning of the modernised bar
mill with the Kocks 3-roll RSB is planned
for the end of 2014/beginning of 2015.
Friedrich Kocks GmbH & Co KG –
Germany
Fax: +49 2103 51249
Email:
Website: