EuroWire March 2015

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News
Technology
March 2015 49
Medical technology, power engineering,
or mobility – quality wire plays an
important roll in all progressive industries.
The OTA technology that has been
developed by system supplier Koch
achieves the top qualities that are
demanded.
The drawing system enables
non-diverted, straight-line drawing under
a constant and reproducible counter
tension. From pay-off to spooler – thanks
to the linear wire drawing, especially
accurate wire dimensions and high
surface qualities are achieved.
Depending on wire quality, dimension,
and requirements of the end product,
different machines with OTA technology
from Koch are employed.
For the production of pre-stressing steel
wire and spring steel wire using capstans
with diameters of up to 1,200mm, the KGT
47 OTA sets benchmarks.
The machine’s size is compact and despite
its tractions of up to 90,000 N, it generates
very little noise. Also part of the OTA family
is the KGT 25. It is especially suitable for
low- and high-carbon steel wires as well as
stainless steel wires. The KGT 12 produces
fine wires and rope wires with diameters
of less than 0.8mm. Here, a dynamically
regulated process optimisation ensures
the required accuracy. The OTA technology
puts Koch in a leading position on the
global market as it offers economical
production with the utmost accuracy,
reproducibility and product quality.
As a system supplier, Koch designs, builds
and installs complete machine lines
according to customer specifications. The
company, which has been established
for more than 90 years, has always made
drawing machines in-house. Coilers and
spoolers, which are also produced in-house,
ensure that the wire is collected efficiently
and carefully, even on heavy coils.
Peripheral modules made by partner
companies complete the machine lines,
for instance, fulfilling functions such as
cleaning the wire surface or treating
it with copper, aluminium or zinc.
Customers in more than 60 countries
value Koch’s technical know-how in the
areas of engineering, drive technology,
programming and control.
Ernst Koch GmbH & Co KG – Germany
Website:
Innovative OTA technology for quality wires
▲ ▲ As a system supplier, Koch designs, builds, and installs complete machine lines
Smooth from Applied
A line of Teflon®-coated forming mandrels for catheter
fuse welding and tipping operations that are designed to
optimise ID quality and production speed are available
from Applied Plastics.
Applied Plastics’ PTFE Natural® forming mandrels feature a
smooth surface that provides a 0.5 dynamic coefficient of
friction to prevent sticking, block tubing from shrinking,
and simplify catheter removal. Allowing over 25 per cent
elongation without flaking or failure, these extrusion
mandrels are chemically inert and can operate up to 315°C
(600°F) continuously.
Offered in stainless steel or nitinol, the mandrels can be
supplied pre-cut in 0.127mm to 25.4mm diameter sizes
with ±.003mm to ±.013mm tolerance, depending upon size. PTFE Natural® grey
is available with zero PFOA. A proprietary surface preparation process before
applying the coating assures the coating will not flake or crack.
Applied Plastics Co Inc – USA Website:
▲ ▲ The Teflon-coated
mandrels from Applied
Plastics