EoW July 2009

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EuroWire – July 2009 39
technology news
Decalub GPS/PDH wire re-coating
system improves both wire lubrication
and in-line wire cleaning by enabling
high-speed, frictionless drawing;
benefiting from wire dry re-coating in
intermediate drafts with water-soluble
sodium lubricants. Consistent coatings
are achieved, from ultra-thin coat for
plating wire to a strongly adherent hard
coat for high-tensile spring wire with
no speed limitation.
The GPS/PDH system achieves a lubricant
coat increased by 55% to 60% in one
intermediate draft with H/C wire. Sodium
lubricants eliminate friction heat by the
physical separation of metal-to-metal
contact at the wire-die interface.
Users report the elimination of wet
pre-coating chemicals (such as phos-
phate or borax) for all direct drawing
applications, including mechanically
descaled bare rod of 0.88 - 0.90% carbon
content. Standard traditional die-stands
can be used without any modification
of die geometry. Fifty tonnes of H/C wire
can be drawn without wet pre-coating
chemicals. Lubricant viscosity is
maintained at all speeds, eliminating
flow turbulence in the wire-die interface.
In a wet application, the system allows
wire cleaning at the last draft using a rust
preventive specific paste. The system
operates at zero energy consumption
and zero lubricant consumption and
waste. It can be easily installed into the
existing soapbox, and operational within
ten minutes.
Decalub – France
Fax: +33 1 6020 2021
Email:
Website:
▲ ▲ Wire re-coating and cleaning by GPS/PDH system
Wire lubrication and cleaning
Advertorial on behalf of Decalub
Among the latest European regulations
governing REACH and the use of biocides
are moves to reduce the use of borax.
For some wire drawing processes,
borax has been an important additive,
specifically for the formulation of soluble
sodium soaps.
In order to meet with the new regulation
Condat has developed a range of dry
drawing lubricants without borax or
with reduced borax content.
Vicafil TN 1630 is a soluble sodium
soap with very low borax content
(below the limit planned by the
European Commission) but said to
provide improved performance even in
severe high carbon steel wire drawing
operations.
The advantages of working with Vicafil
TN1630 include:
• Higher softening temperature
allows work at higher speeds
• Higher adhesion to the wire surface
results in improved lubrication, die
life and wire surface quality
• Reduced consumption, due to the
reduction of compacted black soap
in the die box
• Reduced dust for healthier work
environment
Vicafil TN1630 is available as a medium
powder, or as medium or large beads.
Condat AS – France
Fax: +33 47807 3885
Email:
Website:
Newmoves to lower borax
▲ ▲ Condat’s Vicafil TN1630 for high carbon wire drawing