TPT January 2009

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January 2009 36
Technology Update
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Europipe commission new crimping press
 The crimping press during disassembly at
Siempelkamp
 Four heavy-duty cranes were needed to load the
crossbeam onto the cargo ship
 Fully loaded, the special transporter truck had a
weight of 355 tons
Siempelkamp, Germany, designs and
constructs crimping presses for the
production of pipes, specialising in custom
built presses with large press capacities.
The company has supplied a new crimping
press to Europipe, after eleven months of
development, four months of construction,
two weeks of preliminary testing and
acceptance testing.
As the first of three presses, the crimping
press will carry out the initial bending of the
edges of up to 50mm thick and up to 18m
long sheet metal made of high-strength
steel, which will be formed into pipeline
pipes by the two downstream presses.
The disassembly of the huge machine took
almost two weeks, and five weeks were
allowed for the reassembly and start-up of
the press. Disassembly and transport were
planned and overseen by Siempelkamp. For
the construction of the press, Siempelkamp
had to reinforce the foundation of its factory
workshop.
The largest parts had to be transported on
a specially made low-loading truck (with
600 horsepower and 160 tyres) and a
ship, because they were too heavy for the highway bridges along the way. The heavy
goods vehicle transporting the crossbeam
of the new press had an overall load of
355 tons.
Fully assembled, the machine has
dimensions of 9 x 13 x 16m, and has a
pressing capacity of up to 11,000 tons.
Siempelkamp Maschinen- und
Anlagenbau GmbH & Co KG – Germany
Fax: +49 2151 925683
Email:
Website:
Dreistern has launched a rollforming
machine for profile cross sections of up to
23.62" x 7.87" (600mm x 200mm) and wall
thickness of 0.197" in (5mm). This machine
was launched at the recent Euroblech 2008
exhibition.
Usually machines of this calibre are
designed for relatively simple profile
geometry and looser tolerances. However,
this P3.200 system is completely different as
it enables the production of complex profile
geometry, with extremely tight tolerances
and short changeover times (even for
complete product changeovers).
The physical dimensions of this system
are also impressive, as it contains nearly
40 forming stands and a cutoff unit for
maximum 52ft (16m) long cross sections.
This machine can work both continuously
and in Start-Stop® operation, providing an
unsurpassed flexibility when bringing highly
precise punch patterns into the finished
profile.
The punch patterns task is handled by
the cutoff system ‘Jumbo’. The 79" x 89"
(2.0 x 2.25m) large table surface houses
two separate presses. One serves the
separation of the profile and the other
is used for hole-punching. Alternatively,
shears, presses, cutoff saws, or high-speed
cutoff saws can be mounted on this table.
Due to hydraulic-clamping the changeover
takes only a few minutes.
This means that it is now possible to select
the optimal cutoff process tailored to each
application. Special electro positioning
devices provide a fast adjustment for each
profile and an accurate cutoff. It is possible
to achieve a cutoff accuracy of ±0.024"
(0.6mm).
With each cutoff or punching cycle the
servo-drive of the machine accelerates an
enormous 10 metric tons within a distance
of only 7.9" (200mm) to the full rollforming
speed.
The technology behind this latest Dreistern
machine especially serves the productivity
and quality goals of demanding profile
manufacturers.
The market for heavy precision profiles
is experiencing above average growth.
Therefore, it is no surprise that Dreistern’s
P3.200 can be found at Europe’s most
successful rollforming companies.
Dreistern GmbH & Co KG – Germany
Fax: +49 7622 391 205
Email:
Website:
Latest model from a frontrunner in rollforming machines
 The P3.200 rollforming machine is used to
manufacture profile cross sections