WCA July 2007

Technology News

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 : sales.pourtier@gaudergroup.com Website : www.gaudergroup.com

The TEC630-95-dc Concentric Tape Screening Head from Pourtier ▲

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 : sales@shanghai-nanyang.sina.net

Website : www.shangahi-nanyang.com

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Wire & Cable ASIA – July/August 2007