TPT September 2017

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T E CHNOLOG Y
48 SEPTEMBER 2017
Electrolytic pickling of stainless steel
and special steel tubes
IN THE stainless steel pipe production
sector, the main cost item, excluding
raw material, is generally related to
production personnel. This is particularly
the case in the production of TIG or laser
welded tubes, on in-line profiles starting
from coils.
In 1999, Condoroil Stainless began
researching a plant that would allow
pickling of the tube in a few seconds,
without danger to the line operator.
The research was completed positively
with the use of electrolytic technology,
and in 2000 the first tunnel Elettra TU
was created, which allowed annealing,
pickling, rinsing with demineralised
water, drying and packing the pipe
bundles directly on the profile,
eliminating numerous handling steps.
Over time it became apparent that
the possibility of pickling in-line was not
the only advantage given by electrolytic
technology. An important advantage
was the high pickling speed, even
on corrosion-resistant materials. For
example, a super duplex annealed
tube can be pickled in two minutes,
compared to 12 hours required for a
nitro-hydrofluoric solution.
There is little environmental impact,
and the absence of nitric and hydrofluoric
acid means increased safety. The
solution conduction is simple, and a zero-
discharge process is easily implemented.
More than 40 in-line picking units have
been installed in Europe alone, prompting
Condoroil to develop similar processes
for pickling other types of pipe.
The range includes the following plant
families:
• Elettra TU standard in-line pickling
unit for TIG and laser welded tubes
• Elettra TU Fast, with increased
power, allowing it to be applied on
induction welding lines
• Elettra TU BR, developed for in-line
electro polishing
• Elettra TBS batch operating unit
for internal and external pickling of hot
extruded tubes
• Elettra TBL batch operating unit for
internal and external pickling of large
diameter tubes from calender or press
machine
Condoroil Chemical Srl – Italy
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CNC production line
for cutting/bevelling
COPIER Bevelmachines has unveiled its latest invention for
metal pipe cutting and bevelling in a single production line.
The company offers stationary equipment for pipe shops,
mainly pipe bevelling machines, pipe cut and bevelling
machines, CNC pipe end working machines and pipe spool
welding machines.
As customers often need to cut or saw the pipes before
they start bevelling, Copier has invented a production line for
length measuring, cutting and bevelling of metal pipes. The
machine is called the Beaver CB and has length measuring,
cutting and bevelling all in a single machine.
When using the Beaver CB the pipe is always clamped
while cutting or bevelling. One operator can control the
complete production line from the operator panel. The main
advantage of Beaver CB is that output is higher because
length measuring, cutting and bevelling are combined.
The Beaver CB is a completely CNC-controlled machine
with both radial and axial feeding. It cuts with up to three
cutting bits from outside to inside of the pipe, and during this
process it preforms a bevel shape with the required angles.
The Beaver CB will be on display at the Schweissen &
Schneiden exhibition at stan d 10B04.
Copier Bevelmachines – The Netherlands
Email:
Website: