TPT March 2009

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57 March 2009
Technology Update
›
Everything you need for a
World Class Pipe Shop.
• CNC Pipe Benders up to Dn 250
• NC Pipe Benders
up to Dn 350
• Cut-to-length Lines
up to Dn 350
• Pipe Bender
Tooling
• Pipe / Flange
Welders up to Dn 350
• Saddle & Hole Cutters up to Dn 900
• Custom Pipe
Fabrication Machines
• Pipe Shop II Software
• Pipe Shop Design
Manufactured by
Jesse Engineering Co.
1840 Marine View Drive, Tacoma, WA 98422
Telephone: 253-922-7433 Fax: 253-922-2536
E-Mail:
Visit: “Click on Pipe Benders”
TPTech Ad.indd 1 11/16/07 9:40:21 AM
Complete systems
for energy efficient
pipe production
Cincinnati Extrusion GmbH, Austria,
presented its new KryoSys system for
manufacturing polyolefin pipes at the
company’s in-house pipe symposium in
Vienna. Cincinnati claims that the system
can reduce energy consumption by up to 30
per cent.
The gain in efficiency with KryoSys is
achieved by the combination of a high-
speed extruder with a newly developed
pipe die, an efficient pipe cooling section
and a heat recovery system. Kryosys
lines lend themselves to the production of
smooth mono-layer and multi-layer PE or
PP pipes with diameters ranging from 110
to 2,000mm. They are also suitable for the
production of corrugated pipes.
The length of the cooling section can be
halved compared to conventional extrusion
lines, even for large pipe diameters. For
example, a total length of 40m is sufficient
to produce a 400mm PO pipe with a wall
thickness of 36.4mm, using a Monos+
90-37G extruder. On the assumption of
an identical output level of 1,300kg/h, the
total length of a comparable, ‘normal’ pipe
extrusion line would be 85m.
To ensure optimal melt distribution, the
KryoS pipe die, specially developed for the
system, has been designed on the basis
of a spiral mandrel die. The advantage of
this particular pipe die is its innovative melt
cooling system which makes it possible to
start cooling the melt in the die, allowing
a substantial reduction in the length of the
cooling section. The lower melt temperature
also brings about an increase in viscosity
at the point of exit from the die, which
counteracts sagging, especially in thick-
walled pipes.
KryoS features a large internal aperture that
allows air cooling of the extruded melt. The
system is rounded off by a highly efficient
pipe cooling section. In this aggregate,
the pipe is cooled simultaneously from the
outside and the inside by a combination
of water and air cooling, which permits a
further shortening of the cooling section.
With its direct drive, the Rapidex high-
speed extruder operates with a high level of
energy-efficiency. There is a reduction in the
number of vacuum and spray cooling baths
required for the downstream aggregates
and the optimised cooling system consisting
of water and air cooling. This means that
energy consumption can be cut by up
to 71kW (about 27kW is saved by the
reduction in circulation pumps, and about
44kW is saved by less water circulation).
Another source of energy savings is the
use of heat released by the pipe cooling
system in the die. This energy can be used
for material pre-heating. The torque of the
extruder can be reduced, resulting in energy
savings of up to 95kW. By combining all of
these measures, Cincinnati claims that a
total reduction in energy consumption of
roughly 186kW can be achieved.
Cincinnati Extrusion GmbH – Austria
Fax: +43 1 61006 266
Email:
Website:
 The newly developed KryoS pipe die is a core component of the KryoSys line, featuring a melt cooling system
in the pipe die
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