EoW March 2009

Power cable manufacturing, materials & machinery Conductor manufacturing Maschinenfabrik Niehoff, and Niehoff Endex North America (NENA) provide all machinery and equipment – with the exception of extrusion lines – for the production of copper and aluminium wire for power cables. The MM85 type multi-draft rod breakdown machine was developed to simultaneously draw two rod wires made of copper, aluminium, or their respective alloys, to finish diameters ranging from 1mm up to 5mm. The MM85 machine is based on the proven design of the M85 type single wire rod breakdown machine.

M85 single wire rod breakdown machine ▲ ▲

The many features of the MM85 rod include a quick drawing die change system, a fully-immersed drawing basin with a highly reliable separation of drawing emulsion and gear oil via a mechanical seal, and a touch screen-based user interface and fault display. As a result of the design and control characteristics, the wires drawn on the MM85 have extremely homogeneous properties with very fine tolerances along their entire length, and the operating conditions are characterized by considerably reduced down times. Based on 7,000 hours per year of operation, and 80% utilisation, the wire production output is up to 31,000 t/a for copper wire, and 18,000 t/a for aluminium wire. For take-up and spooling of power cable wires, Niehoff has developed the dynamic spoolers S630D/S800D, the barrel coilers WF1000/WF801 (built by Niehoff) and the barrel coiler ECC42 (built by Niehoff Endex North America). The S630D and S800D automatic double spoolers are designed for spools with a maximum flange diameter of 630mm and 800mm respectively. With a proper selection of the spool design different size spools can be used on these spoolers without the need to change pintles, thus reducing setup downtime. A fully automatic spool change enables a continuous production operation. The WF automatic down coiler for non-stop inline operation can be connected to all makes of rod breakdown machines, and is suitable for use with baskets, stems, and cardboard barrels with fully automatic barrel change. Trouble-free downstream processing, even after long hauls, is ensured by using an accurate variable wire traverse rosette pattern lay for an optimum package quality. The top speed of the WF1000 coiler is 35 m/s (7,000 fpm). The Endex continuous coiler, ECC42, was developed for inline operation with high-speed drawing and extrusion lines. The application includes the continuous inline coiling of bare wire, plated wire, and insulated wire, as well as insulated stranded conductors made of hard and soft bare copper, aluminium, and aluminium alloy wire. The coiler is suitable for use with baskets, cardboard barrels, and stems. Maschinenfabrik Niehoff GmbH & Co KG – Germany Niehoff Endex North America Inc – USA Fax : +49 9122 977 155 Fax : +1 856 467 0584 Email : info@niehoff.de Email : sales@niehoffendex.com Website : www.niehoff.de Website : www.niehoff-usa.com

Cable taping

The complete range of machines that WTM produces includes newly developed high speed single-twisting machines, suitable for small and medium special cables, for reels from DIN 630 up to DIN 1000, and concentric back twist pay offs of traditional type or concentric type with considerably higher performances in respect to all the traditional de-torsion pay-offs. WTM srl – Italy Fax : +39 049 8705599

There are also heads for yarns with similar precision capacity. The production program of taping lines offers maximum flexibility, allowing the possibility of one, two or more taping modules in line, both with vertical or horizontal layout and with lines that can work with two overlapped tapes or as single taping lines. Installing a remote assistance module assures the customer will receive immediate assistance through an Internet connection.

WTM is specialised in equipment for wire and cable production. WTM’s taping lines work at rotation speeds up to 3,000rpm, maintaining a precision of few hundredths of a millimetre on any tape deposition layer and with a very high positioning precision on overlapping using 2 or 3 heads. The new fully motorised heads, with the high sensitivity of their electronic tape tensioning direct control, are suitable to work with the most critical taping materials, taping and wrapping standard and special wires and cables.

Email : info@wtmachinery.com Website : www.wtmachinery.com

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EuroWire – March 2009