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News
Corporate
March 2015
26
www.read-eurowire.comAbout 40 years ago Sictra first designed
a multi-wire line with the intention of
increasing the output of single wire lines
by simply raising the number of wires
simultaneously drawn.
The company soon understood the
essentials for multi-wire lines of concepts
like productivity and efficiency. Its first
priority was, and still is, to cut as much
as possible any wire breakages, as the
impact on the line productivity is much
more harmful than in single wire drawing
lines.
Therefore
the
drawing
and
annealing
process
has to be as smooth as
possible, with any kinds
of vibration needing to be
avoided, not only as they
are a source of noise, but
also as they impact the
frequency of wire breakages
and subsequent losses of
productivity.
Drawing
capstans
are
located
in
very
stiff
modules,
and
access
to
the
bearings
for
maintenance is from the back of the
machine; the gears are helical, hardened
and precision ground for the best
meshing. The forced lubrication of gears
and bearings utilises a sealing system
that is intrinsically safe which makes
the contamination of drawing emulsion
with lubricant oil impossible.
Based on strict ergonomic concepts
Trafco designed the drawing capstan area
leaving ample room for the threading
up of the line by the operator. For the
same ergonomic reason it limited to 16
the number of wires which are drawn on
a row. A higher number of wires would
need a very long drawing shaft and would
make it difficult and time consuming for
the operator.
There is the same range of wire contact
pulleys for the annealer. The advantage
of this choice is a much longer life of the
pulleys which last, based on customers’
comparative tests, twice as long as the
ones of other manufacturers, and also
have a slower rotation
speed, which has a positive
impact on the life of the
carbon brushes.
Annealers for the medium
and large range of wires are
available both in vertical
and horizontal execution
for those customers who
prefer easier access to the
machine and accept the
greater overall dimension in
plan.
Trafco Srl – Italy
Website
:
www.trafcomachinery.comLearning from a proud history
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Much longer life from Sictra