EoW May 2012

News Technology

Advertorial on behalf of Decalub

Rod preparation: Dry vs wet. Anti-friction high melting lubricants eliminate wet pre-coating

The and

rod

Dry

Cleaning, (DCCD)

Coating process

Drawing

revolutionises

wire

drawing

by

replacing wet preparation including acid cleaning/ rinsing/wet pre-coating chemicals and drying by a new totally dry process that offers substantial cost savings and a unique combination of simplicity and effectiveness. The DCCD process is used in the most demanding H/C and L/C drawing applications from mechanically descaled uncoated rod, including 0.90%C, drawn directly without wet pre-coating chemicals, including spring wire, PC strand wire, plating wire, CO 2 welding wire, etc. The process operates at ‘zero’ maintenance cost as there are no acids, no hot liquid tanks for rod pre-coating, no hot air blowers to dry wet rod, and it operates at virtually ‘zero’ energy consumption. An added benefit is the automatic control of lubrication parameters, including lubricant pressure, temperature and viscosity, enabling the use of anti-friction standard high melting lubricants (200-240°C / 392-464°F for H/C wire) which are instantaneously converted from solid into a liquefied state conventional rod WTM’s range of concentric taping lines, with horizontal or vertical lay-out, is able to satisfy any request for the tape application in the production of special wires and cables, even providing in-line thermal treatment by heating and sintering ovens. Thanks to the extreme accuracy of its technology, WTM proposes taping lines working with rotation speeds up to 3,000rpm, maintaining the precision of a few hundredths of a millimetre in the tape deposition. The machines can be equipped with fully electronic taping heads with multiple

and deposited on mechanically descaled uncoated rod, generating exceptional thermal stability at the highest drawing speed, 18m/sec (3,600 ft/min) for spring wire, completely eliminating the need for phosphate and borax pre-coating chemicals and their wet substitutes. In operation, all lubrication parameters ‘communicate’ together in a sensitive and automatic multi-way interaction to form a high-density full-film anti-wear lubricant coat, weight-adjustable, enabling frictionless drawing by physical separation of wire-die contact in all drafts, at extreme speed dictated mainly by rod pay-off and wire take up modes. Decalub – France Website : www.decalub.com ▲ ▲ Rod dry coating by LVC/PDH system, in a 0.85%C application motors, suitable to control the tape tension from 30 Newton down to 100 grams. A special electronic system allows direct control of the tape tension in each working condition, even with the most critical taping materials. Spinning heads for yarns are also available with the same precision and capability. A vision system, with a feedback signal provided by a camera, can be installed in all cases where a continuous monitoring and adjustment of the tape position is required during the taping process. WTM Srl – Italy Website : www.wtmachinery.com

One step ahead in cable taping

34

EuroWire – May 2012