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

PUBLISHED: 01 May 12

Rod dry coating by LVC/PDH system, in a 0.85%C
application
Rod dry coating by LVC/PDH system, in a 0.85%C application

The rod Dry Cleaning, Coating and Drawing (DCCD) process revolutionises wire drawing by replacing conventional rod 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, CO2 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 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
Tel: + 33 1 64 26 20 66
Email: info@decalub.com
Web: www.decalub.com

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