TPT November 2012

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Technology News
November 2012 71
fast beveling of pipe ends!
The PBM series consists of a
PBM-4, PBM-6, PBM-8, PBM-16 and
even a PBM-30. The clamping range
goes from 1/2” up till 30”, or 20 up till
780 mm O.D. - also in CNC
...PBM pipe end preparation machines
Sluisweg 9, 6582 AG Heumen Holland
Tel. +31-24-3586514, Fax +31-24-3587079
The stationary PBM end
preparation machines,
for fast beveling of all
types of materials,
are the strongest bevel
machinesinthemarket.
COMPLETELY RE-DESIGNED
2011-2012
Th. WORTELBOERB.V.
Bending high strength tubes
AT Tube India International 2012,
Schwarze-Robitec GmbH presented the
new tube cold-bending machine CNC
100 DB. The innovation was developed
specifically for bending boiler tubes and
tube coils in demanding materials.
“Ultimately, efficiency inside the
combustion chamber is dependent on
the tubes used providing the greatest
possible area for heat transfer with the
tightest possible bending radii. This is not
new. However, the bending challenge
behind it is much greater due to the high-
strength materials,” explains Schwarze-
Robitec managing director Bert Zorn.
With the CNC 100 DB tube cold-bending
machine, the specialists have constructed
the required plant innovation and further
developed their special booster bending
machine process without mandrel. The
primary consideration here was the
regulation of the plant. On the one hand,
greater bending forces are needed in
order to cold shape the harder tubes. On
the other hand, the material reacts more
sensitively. The process of the CNC 100
DB has consequently been optimised in
order to reliably achieve results of a 1D
bending radius even with high-strength
materials.
“As such, with our booster bending
solution, we ensure that a minimal
reduction in wall thickness occurs in tube
bending process. Particularly in the use
of high-strength materials, this offers
a noticeable cost advantage,” adds
managing director Hartmut Stöhr. Overall,
the CNC 100 DB is a development of
the range of systems from Schwarze-
Robitec for tube processing in power
plant construction. For over 45 years, the
specialists have constructed the required
bending technology for the production of
tube and membrane walls, burner port
tubes and supply lines.
Schwarze-Robitec – Germany
Website:
The new CNC 100 DB
tube cold-bending machine