EoW September 2010

155 / 216

EuroWire – September 2010 45
technology news
The PDH lubrication system is used in the most demanding drawing applications,
allowing the highest drawing speeds, with all carbon steel rods/wires, mechanically
descaled or acid cleaned, bare or pre-coated, bright or galvanized, including spring,
high-tensile rope, PC strand, stainless steel spring, galvanised H/C and L/C wire,
plating wire and CO2 welding wire.
The PDH system uses a unique multi-way interaction of lubricant pressure,
temperature and viscosity to convert a solid lubricant into a liquefied solution and
maintain its thermal stability at all drawing speeds, eliminating conventional wet
pre-coatings for all drawing applications form rod, including mechanically descaled
0.90%C rod drawn without pre-coating chemicals.
The system is highly regarded for its
unique ability to provide closed circuit
pressure lubrication at 350 bars,
controlled lubricant injection at wire
speed of 22 m/s and lubricant thermal
stability at 240°C. The PDH system
performs a high-performance wire
rod dry coating with completely fused
lubricant deposited instantaneously,
in 5 to 10 micro seconds, operating at
zero energy consumption, performing
a high-density strongly adherent hard
anti-friction (anti-wear) multi-layer
coat with adjustable coating weight up to 8–10g/m2, at will, completely eliminating
the need for phosphate and borax wet pre-coating chemicals.
A typical application consists in drawing 5.5mm 0.83/0.88% C, mechanically descaled
rod, without wet pre-coating, with an output of 2.2 tonne/hour and a die life of
200 tonnes/die in the first draft and 40 to 60 tonnes of wire drawn in last draft,
with superior surface quality and improved wire ductility.
Decalub – France Fax: +33 1 6020 2021
Email: Website:
Wire lubrication by GP/PDH system ▲ ▲
Wire friction, wear
and lubrication Advertorial on behalf of Decalub
Siemens VAI Metals Technologies has received an order from the Southwire Company,
USA to supply a copper rod rolling mill and the associated coil handling system.
The end customer is Taihan Electric Wire Co Ltd of Seoul, Korea.
The new mill will replace the existing 30-year-old system in Anyang, originally built
by Morgan Construction Company, a Siemens VAI business, as a subcontractor to
Southwire. The new mill will be delivered by the end of 2010.
In 1955, the Taihan Electric Wire Co became the first wire and cable manufacturer
to be established in Korea. Taihan is the leading domestic cable manufacturer and a
major supplier of power transmission cables to the Asian market. Southwire Company
is constructing a completely new production line for Taihan Electric, including melting
and casting plants with a production output of 40 tonnes of copper rod per hour,
in diameters ranging from 8mm to 25mm.
Siemens VAI is responsible for the engineering, manufacturing and commissioning
of all the equipment for the rolling mill. This includes a roughing mill with one
18", one 16" and two 12" stands, as well as a finishing mill comprising eight 8" stands.
The rolling mill is completed by a pickling line, two pinch rolls, a rollerised downturn,
coiler and conveyor.
Siemens AG – Germany
Website:
Taihan Electric to replace
copper rod mill