WCA September 2013

96 / 116

wire Southeast Asia – BITEC, Bangkok 17th-19th September 2013 94
➣➢➣
wire Southeast Asia
The interface module and all
connection plugs are fully sealed for
perfect protection against water, dirt
and mechanical damage.
Sikora AG – Germany
Website:
Sirio Wire Srl
Stand E06
Sirio Wire Srl is an Italian company
specialising in the production of wire
surface treatment lines. Its production
range includes HCl fumeless pickling,
H2SO4 electrolytic pickling, ultrasonic
and electrolytic cleaning, electro-
plating lines, bronzing lines for
beadwire, phosphating, coating and
drying.
Sirio will display pictures and films of
its recent lines and, in particular, the
latest generation of electro-galvanising
lines for steel wires.
Electroplating is the process of using
electrical current to coat an electrically
conductive object, in this case steel
wire, with a relatively thin layer of
metal. The primary application of
electroplating deposits a layer of a
metal having some desired property, in
particular corrosion protection or
lubricity, on the steel wire surface.
The latest generation of Sirio electro
galvanising lines are made with
insoluble anodes and separate
dissolution tank. This is a huge
advantage as no operation has to be
made where the wires are moving.
A PLC-based control system with
touch screen panel for control of the
elements of the line allows an
automatic calculation and supply of
requested current intensity for the
required coating thickness in function
of the speed and of the wire diameter.
The containment of fumes is complete,
thanks to covers with a counterweight
system, exhaust pipe and efficient
scrubber for neutralisation.
Sirio Wire Srl – Italy
Website:
August Strecker
GmbH & Co KG
Stand J14
In the production of cables, the
consistent and process-reliable joining
of cables is an important topic.
Generally, electrical resistance
butt-welding is employed as a reliable
means of joining two stranded
conductors or cable ends. A
distinction is made between two
different methods, both of which are
offered by Strecker.
When welding with the use of glass,
ceramic or graphite tubes, the two
ends of the stranded conductor or
cable are inserted into a tube so that
the contact point is in the centre. The
material is brought to the melting point
by means of an electrical current and
is welded by the upsetting pressure in
the tubes. The material that has
become molten is distributed evenly
between the individual strands of the
conductor. After completion of the
welding process, the tube is shattered.
The surface of the weld is flash-free,
clean and smooth, and – provided the
inner dimension of the tube was
selected correctly – the weld is hardly
thickened. Very little reworking (eg
filing) is required in order for the
slightly larger cross section resulting
from the process to be drawn into the
entry nozzle of the extruder without
problem. For larger cross sections,
these machines are equipped with
pneumatic clamping and upsetting. At
present, stranded cables up to a
maximum of 1,200mm² can be joined
using this method.
When welding without tubes, using
electric double upset butt-welding
machines with automatic de-burring,
the cable ends at the contact point are
brought to the required welding
temperature with an initially light
pressure. As soon as the material
becomes molten, high pressure is
applied and the heated material is
pressed almost completely out of the
welding zone. With the use of this
double pressure, high-strength welds
can be achieved.
Integrated in the process immediately
after the actual welding procedure, the
welding flash is cut away (ie the
❍ Electrolytic pickling from Sirio Wire
➣➢➣