EW January 2011

Stranding, twisting, bundling & bunching

ArcelorMittal orders two-strand high-capacity wire rod mill

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 : thilo.sagermann@sms-group.com

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.

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 : sales.setic@gaudergroup.com Website : www.gaudergroup.com SETIC double-twist bunching/stranding machine TD 630 i ▲ ▲

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EuroWire – January 2011