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Wire & Cable ASIA – January/February 2009 41
Aluminium and aluminium alloy conductors are used for the overhead transport of electrical energy. To support the weight of
airborne electrical cables hung between two trestles, a steel wire stiffener is necessary in the centre of the cable. The steel
wires used for this purpose are aluminium- or zinc-coated. In particular, aluminium-coated steel wire, known as Alumoclad,
is more resistant to corrosion and is also preferable to zinc due to its higher conductivity.
GCR Eurodraw makes lines to draw down
Alumoclad from the wire rod to the final
required diameters, with conductivity
and tensile stress that comply with
the regulations in force in the different
countries of the world. The lines are able
to draw the combination aluminium/steel
at high speeds, while at the same time
maintaining the original ratio between the
thickness of the aluminium coating and the
steel wire diameter.
Die cooling has been optimised for
excellent dispersal of the heat produced
during the drawing operation, and block
cooling is such that the wire temperature is
maintained within the required limits after
every single drawing block. The die boxes
have been expressly designed for this
particular production. Alumoclad drawing
lines include pay-offs and take-ups that are
specific for the spools used by the user in
the subsequent production processes.
GCR Eurodraw SpA – Italy
Fax: +39 02 9354 0452
Email:
Website:
Butt welders
Microwelder is a range of electric
resistance wire butt-welding machines
from Rymer Engineering.
The EH series are suitable for various
materials and, depending on model,
will handle ferrous materials of
0.9 to 9.5mm diameter or non-
ferrous of 0.9 to 6mm diameter. The
EH series is supplied mounted on a
wheeled trolley.
The SG series, depending on model,
is suitable for ferrous materials
between 0.3mm and 2mm diameter
or non-ferrous wires of 0.5 to 3mm
diameter. A wheeled trolley is avail-
able for the SG series if required.
The energy efficient Microwelder
units are adaptable for round, flat
or shaped materials or sections.
Portable, light and compact they
are easy to handle and simple
to operate. Suitable grinders are
available and Rymer will also supply
spares and service.
Rymer Engineering – UK
Email:
Website:
Wire drawing consumables in fibreglass
and thermoplastic
Isolmax, of Milan, specialises in manufacturing in thermoplastic materials and
fibreglass but can also work in other materials including Teflon, nylon, lexan, PVC,
glass epoxy or polyester glass, depending on the customer’s application.
Especially for copper wire
drawing machines, Isolmax
produces flanges for coils
and plates for annealing
furnaces made from a
thermosetting material.
This fibreglass material
is believed to be more
durable and offer higher
performance than thermo-
plastic, which is currently
used by most manufacturers
of copper wire drawing
machines.
The cost of material, its
excellent heat resistance, mechanical properties and dielectric strength make this
product successful in many other applications. The company also produces other
components in fibreglass and thermoplastic material for other applications such as
driving chains, tubes, pulleys, plates, bushes and pipes to individual specifications.
A technical department is always available to offer advice and to find innovative
solutions to customer needs.
Isolmax Srl – Italy Fax: +39 02 92162288
Email: Website :
Drawing of Alumoclad steel wire
Components in thermoplastic from Isolmax ❍ ❍
MTS machine to draw Alumoclad wire ❍ ❍