EoW March 2009

85 / 160

EuroWire – March 2009 83
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.
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: Email:
Website: Website:
M85 single wire rod breakdown machine ▲ ▲
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.
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.
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
Email:
Website:
Cable taping