EoW January 2009

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EuroWire – January 2009 46
wire drawing machines
Drawing of Alumoclad steel wire
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 coun-
tries 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:
MTS machine to ❍
❍
draw Alumoclad wire
M+E has developed a new generation of wet drawing machines
designed to eliminate, or significantly reduce, many existing
quality and production problems. Operation of the M+E wet wire
drawing machines with different wire types has demonstrated
remarkable quality and productivity increases compared to
traditional machines, while keeping the die wear constant.
M+E wet wire drawing machines are particularly noted for
drawing brass coated wire (steel cord, saw wire), electrolytic or
hot dip galvanised wire, stainless steel and spring wire.
The M+E range includes machines with 2, 4 or 6 cones with a
maximum of 12, 25 or 33 dies for a finished wire diameter down
to minimum 0.08mm (0.0031").
The main wet drawing machine characteristics are:
straight wire path, without transfer sheaves •
wire drawing only in one direction •
high ratio between ring diameter and wire diameter •
guaranteed proper wire and dies lubrication during •
stringing-up
high pressure individual die cleaning system •
water cooled final die and final capstan •
robust, anti-vibration steel frame •
heavy duty bearings and cone shafts •
cone shafts specially sealed to prevent bearings damages •
compact design with excellent accessibility during •
stringing-up
minimum wire slip percentage on cones •
AC main motor with slip-proof belt transmission •
complete accessibility to all components allowing easy •
maintenance
completely pre-wired, with incorporated electrical cabinet •
enclosed design with interlocked safety guards conforming •
to the most stringent safety regulations
M+E wet drawing machines are supplied complete with wire
pay-off and traditional or fully automatic spooler for taking up
wire on vertical or horizontal axis spools.
M+E Macchine+Engineering – Italy
Fax: +39 0341 806002
Email:
Website:
Wet wire drawing with M+E
Wet drawing machines fromM+E ❍ ❍