WCA July 2007

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Technology News
47
Wire & Cable ASIA – July/August 2007
Uses the latest technology
Using the latest technology, Shanghai Nanyang has produced the GSB-1Q
16-carrier high-speed braider.
The machine is used for braiding of ultra-thin wires in industries such as
micro-computer, movable communication installation, space flight and
aviation.
Braiding pitch ranges from 2-60mm which can be freely chosen at 0.1mm
precision. It can braid ultra-thin copper thread of 0.03-0.05mm, and the
tension-constant take-up and pay-off mechanism ensures the braiding
process keeps tension even.
Shanghai NanYang Electrical Equipment Co Ltd – China
Fax: +86 21 50429025 Email:
Website:
Demonstration of
concentric technologies
In February, Setic and Pourtier invited
customers to a demonstration of their
concentric technologies, with three
machines under production conditions
as well as their ‘Quali2twist’ principle.
The demonstration was attended by
cable makers from three continents.
The 630 DIN bobbin production capacity
of the Concentric Tape Screening Head
type TEC 630-95-dc is more than 30
times the one of pad on a tangential
taping head. This process is suitable
for counter helix or screen application
for the manufacture of LV, MV and
HV, control and special cables at high
production speeds (up to 600 RPM).
This head was demonstrated by applying
a copper tape (11mm x 0.10mm) on a
cable of diameter 8.80mm, with 30mm
lay length, at 550rpm.
The Concentric Steel Wire Armouring
Head model TEC 630-SWA produces
SWA cables at speeds up to 500rpm
and reaches an extended capacity up
to 18km. During the demonstration six
wires of 0.9mm diameter were applied
around a 12mm diameter cable.
The Multiwire Concentric Strander type
COS1200-2 allows the optimising of
copper consumption and increases
the capacity of stranding line for power
cables (section 35-500mm² or more).
Cables are produced at speeds up
to 500rpm (two to three times more
productive than a rigid strander). It offers
specific advantages: short line length
compare to conventional concentric
stranding line and driven tension
control improving process reliability on
the smallest wires. This strander was
demonstrated on stranding of seven
1.96mm wires at 500rpm.
The ‘Quali2Twist’ stranding machine
TA 1000-Q2T, which is dedicated to
bare wire strand or sub-strand assembly
for very flexible cable, creates single
twist quality products (equivalent cable
quality and consistency compared with
single twist process) with double twist
productivity (twice as fast as single twist
process) thanks to the innovative guiding
system allowing final lay length at closing
die. The demonstration presented
stranding of an ultra-flexible strand made
of seven sub strands at 1500tpm.
Pourtier – Gauder Group – France
Fax: +33 1 6426 6110
Email:
Website:
The TEC630-95-dc Concentric Tape Screening Head from Pourtier ▲