EoW January 2009

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EuroWire – January 2009 31
english technology news
Camera cables with
BendBright-XS
Draka Communications has announced
that its patented BendBrightXS tech-
nology is now an integral feature of its
SMPTE 311M hybrid camera cables with
integrated optical fibres. It is believed that
this enhancement will make transmission
cables for video signals considerably
more robust and more appropriate for
HDTV broadcasting environments.
BendBright-XS is a technology for
optimising optical fibres in which a
special field-confining trench ensures
that the optical beam remains in the
centre of the cable even when the latter is
subject to extreme stress – for instance by
bending and pressure. As BendBright-XS
effectively eliminates faults originating
in fibre optic cables, loss of transmission
during live broadcasts can be excluded.
Draka SMPTE 311M cable uses both fibre
optic technology (two optical fibres) and
conventional elements. The addition of
BendBright-XS means that the optical
fibres are significantly better protected
so the cable can be treated like a
conventional cable.
Draka Holding NV – The Netherlands
Fax: +31 2056 89899
Email:
Website:
SAS Engineering & Planning’s combined
drawing machine (CDM) has been
designed to provide technological value,
reliability and ease of use. The combined
drawing lines are equipped with twin
cams, hydraulic carriages and hydraulic
flying shear and are said to work at very
high speed with maximum accuracy.
CDM can be supplied complete with the
most advanced accessories to provide a
totally automated line including pay-off
group, pre-straightening device, draw
bench, chamfering machine, bundle
strapping, weighing and handling, all
managed automatically.
SAS now presents the CA model
of hydraulic flying shears. With the
demand for faster drawing lines, without
compromising cutting quality and
accuracy, hydraulic flying shears are
designed for cutting ‘bushing-to-bushing.’
This type of cut decreases the pressure on
the material generated by cutting stress.
A better quality of the point is obtained
(nail effect) and the cut is perfectly
orthogonal in respect to the bar axis.
The shearing tool is
assembled on a sliding
carriage mounted on ball
guides, and powered by a
brushless electric motor.
An electronic encoder,
controlled by the central
drive, powers the motor
until the carriage reaches
the same speed as the
bar; the bar is cut when
the two speeds are
identical, and therefore
differences in length are
dramatically reduced.
The machine can reach
a cutting force of up to
76,000 kg and a cylinder
run up to 50mm.
SAS Engineering & Planning Srl – Italy
Fax: +39 031 657223
Email:
Website:
SAS introduces the hydraulic flying shear
Decalub’s new lubricant
viscosity control system, in
conjunction with the PDH
ultra high-pressure lubrication
system, allows mechanically
descaled high-carbon rod, or
low-carbon rod, to be drawn
directly, without pre-coating
chemicals, at the highest
speeds.
The LVC/PDH rod dry coating/
lubrication system benefits
from fully controlled 3-way interaction
between the pressure, temperature
and lubricant viscosity, enabling an
automatically controlled fusion of
standard dry lubrication compounds,
making them molten/liquefied with a
viscosity suitable for the application.
The system permits the ‘frictionless’
drawinginremainingintermediatedrafts
with the full lubricant film at wire-die
interface, with physical separation of
metal-to-metal contact, in the most
demanding multi-draft applications
from rod to wire in a one-step operation.
Typical applications of the LVC/PDH dry
coating system include direct drawing
from mechanically descaled H/C rod,
without pre-coating chemicals, from
5.5mm down to 1.3mm at 18m/s, and to
5.5mm to 3.25mm at 8.3m/s, with die life
enabling production of 200-220 tons/
die in the first draft. The finishing die
produces 40 to 60 tons of wire, drawn
without pre-coating chemicals but with
wire properties such as ductility, and
torsion test greatly improved.
Decalub – France
Fax: +33 1 6020 2021
Email:
Website:
Wire rod lubrication by LVC / PDH system ▲ ▲
Hydraulic shear from SAS ▲ ▲
Advertorial on behalf of Decalub
Lubricant viscosity control
revolutionises wire drawing