EuroWire March 2016

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wire 2016 show
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4-8 April
March 2016 148
continuous casting technology. The sealed
lid with enclosed atmosphere allows
accurate and consistent composition
control of alloys containing reactive and
volatile elements, for example Cr, Zr, Ti and
Mg, and eliminates the need for graphite
ake melt cover.
Rautomead also continues to o er
continuous casting technology for
oxygen-free copper wire rod, copper
magnesium alloy rod, binary brasses and
bronzes from 2,500 to 25,000 tonnes per
year, and rods from 8mm to 30mm in
diameter.
Rautomead Ltd – UK
Website:
Ravni Technologies
Stand: 10B12
Ravni Technologies produces the e cient
and powerful wire straightening and
cutting machines MDC30 (3 to 10mm) and
MDC50 (5 to 14mm). A new servo-cutting
device has also been successfully
integrated on the range.
All machine functions can be found on the
user-friendly control panel, which displays
the di erent stages of the production
process.
As with all Ravni models, the machines are
tted with a fast tool changer. The preset
straightening tools saves time and waste
at every diameter change.
The company’s production programme
also includes:
• Tube cut-o machines
• Chamfering machines
• Shaped wire straightening and cutting
machines
• Slot screens welding machines for the
ltration industry
Besides the well-known range of
innovative wire straightening and cutting
machines, Ravni has developed tailor-
made automatic systems to feed line wires
directly into the welding machines or to
store the cut bars into containers in an
orderly way.
Ravni supplies machines worldwide,
while its technicians are trained to get
businesses up and running quickly,
and undertaking training of customers’
sta . Around 70 per cent of the turnover
is exported and the company is still
enlarging its network of agents.
Ravni Technologies – France
Website:
Reber Systematic
Stand: 10H60
Reber Systematic, better known as Resy,
is a Germany-based company that has
been providing the wire and cable
industry with a complete range of
ltration systems for coolants and
lubricants for more than 40 years.
Pure ltration of coolants and lubricants
will give the e ect of higher productivity
due to fewer wire breaks, less down time,
lower wear of the dies and much better
surface quality of the wires. To achieve
these goals, Resy develops and builds
single lters, integrated ltration systems
or complete central ltration systems for
emulsion and oils.
Reber Systematic GmbH & Co KG
– Germany
Website: www.resy-
Redies
Stand: 09B25
Drawing die maker Redies has newly
extended the range of polycrystalline
diamond (PCD) die blanks of its own
product brand MANT® (www.mant.
com). The unique development is a
thermostable PCD blank with a conical
tungsten carbide ring size D-15. The MANT
MTD-15-005-TS is meant for high-duty
drawing of hard materials, especially for
welding wire and stainless steel drawing
in the range of 0.8-1.5mm wire diameter.
During the high-pressure, high-
temperature sintering process the PCD is
“baked” from synthetic diamond powder
of an extremely narrow 5-micron grain size
together with catalyst metals like cobalt.
This agent e ects the bridging of the
diamond crystals and forms a PCD body
like a dense and brittle sponge. In the
“pores” remains a content of some 6-8 per
cent of cobalt.
Having di erent coe cients of thermal
expansion, the metal cracks the diamond
bridges at higher temperatures leading to
an earlier breakage of the die. Therefore
“normal” PCD blanks are limited to a
process temperature while casing and
drawing of about 650°C.
With leaching in hot acid over several
weeks the metal content in the PCD
is reduced to traces. This gives no
expansion of di erent materials at higher
temperatures because only diamond is
left.
Afterwards the PCD is cut by laser and
then polished into its nal conical form to
be set under pressure into a conical ring of
tungsten carbide. The conical tting gives
a better resistance to axial forces during
the drawing process.
The MANT MTD-15-005 is then set into
the stainless steel casing at Redies by
application of Ni-alloy sintering material
up to 1,050°C, resulting in a tough “corset”
around it.
The further laser drilling, ultrasonic
pro ling and polishing is done the same as
with a “normal”wire drawing die.
Redies Deutschland GmbH & Co KG –
Germany
Website:
▲ New alloy rod casting machine
▲ The MDC50 from Ravni Technologies
▲ Resy compact band lter
▲ Details of the MANT MTD-15-005-TS