EuroWire Sept 2015

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Technology
September 2015 41
Manufacturers of cables, specifically
automotive and data cables, require a
reliable conductor preheating, to ensure
an optimum adhesion of the insulation
on the wire, and a controlled foaming.
With the Preheater 6000 TC (temperature
controlled) Sikora has an advanced solution
for precise conductor preheating, the basis
for high-quality cable production and
repeatable control of the production.
In only a few applications, it may be
sufficient to control the output power
of a conductor preheating device only
depending on the conductor size and
type, the line speed and the required
temperature. However, there are
numerous influences on the accuracy
of the conductor temperature, such
as the ambient temperature, the
initial temperature of the conductor
and particularly the development of
the temperature of the wire guiding
short-circuit wheel within the first ten to
20 minutes after starting the production
or after an interruption of the production.
The Preheater 6000 TC is positioned
before the extruder and inductively heats
the conductor to the desired nominal
value. The integrated IR camera ensures
a non-contact measurement of the
wire temperature at the output of the
preheating device.
The controlling module of the Preheater
6000 TC continuously adjusts the power
of the preheating with the result that the
wire always has the nominal temperature,
independently of conductor material, the
dimensions of the conductor and the line
speed. No further setting is necessary.
LED displays directly on the Preheater
6000 TC show the measured temperature
at different perspectives. The integrated,
non-contact temperature control makes
the Preheater 6000 TC unique. It is
available for temperatures up to 250°C, for
a product diameter of 0.32 to 4.5mm (0.08
to 16mm²) and for a line speed of up to
2,500m/min.
Three device models are available for the
power range of 10, 20 and 30 kW. A power
calculator at
helps choose the optimal device.
The Sikora temperature measuring system
is also available as the stand-alone system
Wire-Temp 6000.
Sikora AG – Germany
Website:
Conductor preheater with integrated
temperature measurement and control
▲ ▲ Conductor preheater with integrated temperature
measurement and control