WCA November 2009

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Tubular strander Deyang Bochuang Electrotechnical Equipment’s tubular strander is used to strand copper wire, aluminium wire, small size ACSR and strands. The machine has a small radial run-out, double bearings front and back, with smooth running,

Back twist in strands and wires The back twist in strands and wires, often considered a technological sophistication, has revealed an essential point for the building of strands and wires in copper alloy or cadmium, and in building com- posite strands where the final product is an assembly of many strands, such as in aluminium copper clad nickel plated. For these applications Macchine Speciali has developed several lines with back twist payoffs with bobbins from 250mm diameter up to 1,000mm diameter. These lines offer the same dimensions for unwinding, making it possible obtain production at triple speed. Macchine Speciali Srl – Italy Fax : +39 039 6049961 Email : macchinespeciali@ macchinespeciali.it Website : www.macchinespeciali.it

low noise and long service life. The base is made of cast iron, easily installed and gives very little vibration. It uses external threading, and has pneumatic brakes. The pay-off tension control uses mechanical friction or electromagnetic control and is equipped with automatic brake and emergency stop devices. The electrical system adopts PLC control, touch screen operation, centra-

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Tubular

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Deyang

Bochuang Electrotechnical Equipment

lised control of various operating parameters and fault diagnosis. This machine is composed of a payoff stand, headstock, tube components, bobbin holder, under-roller, brake, transmission box, die holder, haul-off capstans, take-up and traversing stand, safety hood and electrical system. Deyang Bochuang Electrotechnical Equipment Co Ltd specialises in the research, development, manufacture, sale and service of copper, aluminium and aluminium alloy rod continuous casting and rolling equipment; rod drawing equipment; frame, tubular and cage stranders; and continuous lead sheathing extruding equipment. Deyang Bochuang Electrotechnical Equipment Co Ltd – China Fax : +86 838 2508161 Email : dybochuang@tom.com Website : www.dybochuang.com

Rotation machinery With over 60 years of experience in the design and manufacture of rotating machinery for the production of steel ropes and power and telecommunication cables, the Spanish company CM Caballé offers a range of bunchers, stranders and cablers. During recent years the company has focused on upgrading and developing more efficient rotating machines for the power cable industry.

1 Conductor manufacturing (stranding)

Rigid stranders: for round, sector, • Milliken, underground or aerial conductors of any size Double twist stranders: up to • 400mm² in unilay constructions of copper and aluminium Bow skip and tubular stranders: up • to 19 wires of copper, aluminium, AAAC and ACSR 2 Laying-up of insulated conductors (cabling) Drum twisters: the rotating take-up • (up to 4,000mm and 30 tons) can incorporate many different options for round, sector, Milliken and many different applications

Single and double-twist stranders: • for reels up to 2,200mm. A faster alternative to drum twisters Bow skip stranders: very high-speed machine to cable insulated conductors up to 240mm² • SZ stranders: very efficient strander for small size conductors • 3 Screening Some cables have to be screened with copper wires or armoured with steel wires before the final sheathing: Rigid stranders: for screening medium and high voltage power cables • Drum twisters and single twist stranders: suitable for screening and armouring • SZ screening: efficient solution for small wires • Planetary stranders: the highest quality strander for high tensile strength wires • CM Caballé sa – Spain Fax : +34 93 399 0008 Email : caballe@cmcaballe.es Website : www.cmcaballe.es Drum twister for Milliken conductors up to 3,000mm². ❍ ❍

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Wire & Cable ASIA – November/December 2009