TPT July 2016

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66 JULY 2016
T UBE M I L L S & R OL L FORM I NG L I NE S
Roll forming lines for complex profiles
FOR more than 100 years, Seuthe, a
company of the Asmag Group, based
near Düsseldorf, Germany, has been
developing tube mills and roll forming
lines on which steel, stainless steel and
ferrous metals are processed.
All lines are mechanically and
electrically developed, assembled and
automated in-house at Seuthe. Nearly
all of the parts used are manufactured
in the group’s production facilities and,
like the line itself, tested in trial operation
prior to delivery. Seuthe prides itself
on its strict quality guarantees. In
addition, customers appreciate the
custom developments and process
requirements tailored to their respective
needs, which justify the company’s
reputation worldwide.
For more than three decades Seuthe
has been designing and manufacturing
roll forming lines for strip widths up to
1,300mm and wall thicknesses of up to
5mm.
For complex cold-rolled profiles, there
are numerous sales opportunities in
the automotive industry, the energy
industry, construction and mechanical
engineering, as well as the furniture
industry and agriculture. However, the
trend is increasingly headed towards
applications where high strength
profiles, dynamically changed cross-
sections, composite profiles or highly
complex profile shapes are required.
In addition, customers are demanding
complex and progressive processes
and product requirements to obtain
demonstrable competitive advantages,
to react to market demands flexibly or to
be able to produce more efficiently and
powerfully.
In addition to the goal of reducing
operating and maintenance costs,
customers are impressed with the
Seuthe standards because of the
sound engineering and the long service
life of the equipment, but they also
place great value on the modular set-
up, which offers an extremely flexible
adaptation to the respective process and
product requirements. Diverse options
of adjustability, short set-up times and
simple operation are also in demand.
The latest developments are:
• Modular variation of forming
stands as a change module design
(rafted design) for the “off-line”
setting up and “online” producing
in order to minimise machine
downtimes.
• All forming stands are driven
by individual motors per shaft.
This prevents the different relative
speed between the belt and
roller, thereby optimising the forming
geometry. The individual drive leads to
energy savings and to the reduction of
tool costs.
• The solution of the single drive per
roller axis (separated at the top and
bottom) driven by a servo motor offers
a number of advantages: improved
energy efficiency, the ability to precisely
determine the speed and velocity
on each roller axis or to prevent an
over-control or under-control of the
performance values.
• The tricky manual coupling and
uncoupling of the cardan shafts on
the bottom and main shafts was fully
automated by a newly developed
system. Not only is the line availability
drastically increased in this way, but
the occupational safety for the operator
and maintenance personnel is also
increased considerably.
• The line concept can be adapted
for existing exchangeable plates (rafted
design). Existing production tools will
therefore be adopted with rack systems.
Seuthe delivers all machines for all
roll forming processes: strip preparation,
strip accumulation, roll forming stands
in multiple numbers, high frequency or
laser welding tables, sizing units and
different flying saw or cutting units,
including roller conveyor, sorting table
as well as a stacking and bundling unit.
Seuthe GmbH – Germany
Email:
Website:
Three tube mills installed by Olimpia 80
THREE complete tube mills with linear
cage forming technology for square
and rectangular sections have recently
been installed in Turkey and Finland by
Olimpia 80.
The “little” mill is the smallest of the
company’s range and can produce
square and rectangular sections from
20x20 up to 60x60mm for a max
thickness 3.5mm at max speed 150m/
min (carbon steel).
The second one can produce square
and rectangular sections from 40x40 up
to 120x120mm for a max thickness 8mm
at max speed 90m/min (carbon steel).
The third one can produce square and
rectangular sections from 40x40 up to
120x120mm for a max thickness 8mm
at max speed 80m/min (stainless steel).
Each line is complete, from decoiler
to cut-off. The mills can produce all the
square and rectangular tubes within the
size range without change of any rolls
in forming, welding, sizing, straightening
and clamp jaws in cut-off. That means
total elimination of all cost for roll sets.
The main advantages of this
technology are speed in changing the
profiles dimensions, easy maintenance
and simplicity in the software utilisation.
With this innovative solution the mill
makes it easy to produce both square
and rectangular tubes by means of a
computerised control, where all data is
stored in order to produce all the tube
sizes in the range in the most practical
way. The PLC records all the useful data
and it is possible to create particular
“shapes” with different angles: from the
PC it is possible to see the “tube flower”
of the tubes that will be produced.
The average time for changing
tube set-up dimensions is around ten
minutes and average saving on raw
material (strips) compared to traditional
tube mills is five to seven per cent.
Olimpia 80 Srl – Italy
Fax: +39 0523 864584
Email:
Website:
Photo credit:
© voestalpine Krems, Austria