EW January 2011

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EuroWire – January 2011 47
Stranding, twisting, bundling & bunching
In 2008, ArcelorMittal Monlevade SA, Brazil, had placed an
order with SMS Meer, Germany, for the supply of a single-strand
high performance wire rod mill with the option of expansion to
two strands.
In view of the world economic crisis, the order was subsequently
suspended but it has now been reinstated. The original expansion
option for two strands is to be implemented immediately.
The plant is scheduled to go into production in the second
quarter of 2012. Within the framework of this order, SMS Meer is
to supply a walking beam furnace, the mechanical and electrical
equipment for the mill train, the complete media supply systems,
the finishing facilities for the wire-rod coils and the rolling and
cooling technology. The wire rod mill will have an annual capacity
of 1,000,000 t. The main equipment consists of a walking-beam
furnace with a capacityof 180 t/h. The billet dimensions are 160 x
160mm or 155 x 155mm. This is followed by a four-stand, single-
strand roughing mill of HL (Housing Less) stands in horizontal
and vertical arrangement with downline free runout.
The intermediate train consists of six horizontal HL stands that
are designed for the two-strand operation. The two single-strand
wire rod outlets comprise four HL and four CL (CantiLever) stands
in H/V arrangement, a cooling and equalising section, a ten-stand
wire rod block and a water cooling section downstream of the
wire rod block.
The CL stands and the wire rod block are of UHD (Ultra Heavy
Duty) design. The stand cassettes for the CL stands and the wire
rod block are identical.
In addition, space has been planned in each line for a four-stand
FRS® (Flexible Reduction and Sizing) mill in order to enable an
increase in the efficiency of the plant in the future. The maximum
rolling speed for 5.5mm wire rod is 120m/s.
The scope of supply for each wire rod outlet includes a 96 m-long
LoopCoolingConveyor (LCC®) for accelerated anddelayed cooling
and two water cooling sections. The plant is completed by the
Controlled Cooling Technology (CCT®) developed by SMS Meer.
The equipment supplied by SMS Meer permits the temperature-
controlled rolling of all steel grades in the size range from
5.5 to 15.9mm. The coil handling equipment with two coil tying
presses completes the overall solution.
The secondary metallurgical centre with ladle furnace and
continuous caster for the production of Special Bar Quality (SBQ)
billets with six strands upstream of the wire rod mill was ordered
from Concast AG in Zurich, Switzerland.
ArcelorMittal Monlevade SA – Brazil
Fax : +49 211 881 774449
Email:
SETIC’s new double-twist
bunching/stranding machine
The SETIC Gauder Group has recently been awarded several contracts for its new and advanced bunchers for automotivewire, including
a contract from Leoni Kabel (one of the worldwide leading suppliers of cable for the automotive industry).
SETIC’s stock policy regarding its new double-twist
bunching/stranding machine type “TD 630 i” is to
aim for reduced manufacturing costs and reducing
the time taken to respond to customer needs.
TD 630 i launched on stock includes:
Change gear capstan including 5 pairs of gears •
Green bow (instead of standard eyelet bow) to •
reduce power consumption
Traverse limits adjustable from the control panel •
during the production
Electrical cabinet (Rittal brand) on the side of the •
machine to save space in the case the machines
are placed back-to-back and face-to-face
Bluetooth transmission (to reduce the number •
of rings)
The design of this machine is flexible enough
for easy integration of motorised driven capstan
(TC 630 i versus TD 630 i), air conditioning, and
tropicalisation (options).
SETIC Gauder Group technology presents several
major advantages such as: single bow design,
full AC motors, motorised driven capstan available,
reduced maintenance (no encoder, Bluetooth system) and Green bow design. This allows cost savings of 1,500 to 2,000 euros per
buncher per year in comparison with the conventional single-bow buncher.
Setic sas – France Fax: +33 4 77 71 10 85
Email: Website:
SETIC double-twist bunching/stranding machine TD 630 i ▲ ▲
ArcelorMittal orders two-strand high-capacity wire rod mill