and
for wire treatment
Wire & Cable ASIA – November/December 2008
54
Copper wire insulation with
UV varnishes
Years of experience in coating optical fibres with UV curable inks and resins
have enabled Medek & Schoerner to develop a completely new line of
products.
For many years, copper wire has been insulated by applying layers of enamel
(enamelled copper wire). Many coats of solvent-based varnishes are applied
in several passes, and dried by evaporating the solvent.
Medek & Schoerner’s new process involves replacing conventional
solvent-based varnishes with varnishes cured by UV irradiation. This does
not produce any solvent vapours, and the use of UV radiators reduces energy
costs to far below the level previously required for thermal drying ovens at
comparable levels of production. The elimination of solvent vapours, coupled
with a considerable drop in energy costs, means the process has a reduced
environmental impact.
The UV curing station can be installed in existing wire enamelling lines and
replace the conventional enamelling oven.
Medek & Schoerner GmbH – Austria Fax
: +43 1 982 72 96
:
m+s@medek.atWebsite
:
www.medek.atLubrication from Lubrimetal
The use of an advanced top performance drawing lubricant is key
to the production of high quality finished wires. Lubrimetal manufactures an estab-
lished range, including its well-known trademarks Fosfil
®
and Steelfor
®
phosphating
agents, coatings and carriers. Steelfor ITS/5 is a new borax free salt coating for steel
wire rod and wire pre-drawing
preparation for batch and in-line
treatments.
For dry drawing, Lubrimetal’s
Lubrifil
®
range includes:
Lubrifil VA 2007 – VA 2001 –
•
strong drawing lubricants for
mechanically descaled wire
rod (production of galvanised
wire for fences, barbed wire
and baling wire
Lubrifil VA 3173 and VA 705
•
drawing lubricants for PC wire
and strand production
Lubrifil VA 6001 – VA
•
7001 – VA 7090 borax free
sodium-based lubricants for
high carbon steel (such as
spring and steel cord) and
stainless steel wire drawing
The Lubriol
®
range of wet drawing
lubricants for ferrous metals, mild
steel, high carbon and stainless steel includes:
Lubriol V 688 for mig wire
•
Lubriol LMZ 10 for steel cord
•
Lubriol CU lubricants for copper wire drawing (breakdown, intermediate, fine
•
and superfine wire drawings)
Lubrimetal has factories in Italy (Lubrimetal SpA) and in India (Peddington Lubrimetal).
Lubrimetal – Italy
Fax
: +39 0341 422386
:
info@lubrimetal.comWebsite
:
www.lubrimetal.comA range of lubricants from Lubrimetal
❍
❍
Corrosion
protection for
overhead power
conductors
Corrosion of overhead power
conductors, mainly ACSRs (alumi-
nium conductors steel reinforced) is
a major and costly problem and is
especially severe in heavily polluted
areas.
Some 25 years ago, in response
to this problem, Vapor-Tek Ltd
developed a highly effective cor-
rosion preventive grease to be
applied to conductors during
manufacture. The grease protects
against both galvanic and crevice
corrosion even in the presence of
corrosive pollutants. Unlike some
greases, which must be applied
molten, Cablegard’s unusual rheo-
logy enables the grease to be
applied cold, straight from the drum
as received.
Cablegard is manufactured to the
internationally recognised specifi-
cations EN 50326:2002 and IEC
61934 and exceeds the corrosion
requirements of the specifications.
The performance of Cablegard was
confirmed by SECRI (Shanghai
Electricity Cable Research Institute),
an important step towards its
approval and use in the People’s
Republic of China, where the
corrosion problem is especially
acute.
SECRI was so impressed with the
test results that Vapor-Tek was
sponsored in the presentation of a
technical paper at a seminar held in
Chonging in November 2006.
In receiving this invitation Vapor-Tek
was uniquely privileged as the first
non-Chinese organisation to attend
the biennial SECRI symposium.
The main topic at the 2006
seminar was “High voltage and
ultra high voltage transmission
projects over long distances” and
delegates comprised scientists
and engineers concerned with all
aspects of electricity generation
and distribution in China, including
problems of corrosion.
Vapor-Tek (UK) Ltd – UK
Fax
: +44 1204 364576
:
enquiries@vapor-tek.co.ukWebsite
:
www.vapor-tek.co.uk