TPT July 2013

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Technology News
July 2013 61
Eddy current flaw testing unit
PROVEA has delivered a complete eddy
current flaw testing solution to Cofrend
Nord, a non-destructive testing official
training and certification company.
This new bench, installed in the north
of France, will be used in order to train
and test future non-destructive experts,
and enables the Cofrend group to
respond to the growing demand for NDT
training sessions in the tube industry.
The eddy current bench has been
designed by Provea similarly to purely
industrial eddy current flaw testing
machines. Operators will be trained
on a machine similar to the industrial
application they can face in their own
production facilities. Compared to the
old system, the new bench has more
capacity: OD 10 to 90mm. Provea
integrated on the bench the eddy
current unit supplied by Foerster France
(Defectotest – M90 Sensor System).
The bench is composed of a feeding
conveyor, two centring guiding pinch
rolls, a central frame for the eddy current
magnetising yoke, and an exit conveying
system. The eddy current unit can be
set in two main directions (axis Y and
Z), allowing non-destructive experts
to accurately find the best mechanical
positioning of the tube compared to the
eddy current measuring unit. Operators
can be taught on a bench very similar
to the industrial process of any tube
manufacturer.
The two pinch rolls are mechanically
linked so that the entry and exit speeds
are exactly the same. The guidance has
also been designed in order to ensure a
repeatable and suitable position of the
tube.
The general manager of the NDT
training unit has been very satisfied
with the investment, and has increased
training and exam capacity, which was
necessary in order to meet market
demand.
Provea – France
Fax: +33 380 961 615
Email:
Website:
New thread tables
BRANDT Engineered Products Ltd has
designed and delivered pipe handling
equipment known as Thread Tables to
a number of tube and pipe producers.
Brandt Thread Tables integrate with
the most modern machine tools. These
machine tools are big bore lathes, often
called ‘threaders’, and are used to
produce both API and premium threads
on tube and pipe.
Brandt equipment positions material in
and out of the threaders quickly, keeping
up with the improved cycle times offered
by the latest machine tool suppliers.
Maintaining cycle times with threaders
is a critical variable to ensure the
investment in the machine tool achieves
maximum return.
The Brandt Thread Table utilises
adjustable stops to position one pipe
at a time on the table. The table is
designed with four independent idler
rolls used to absorb vibration while the
pipe is spinning during the threading
process. The independent idler rolls
were engineered and manufactured to
reduce unwanted pipe movement at
multiple locations along its length. This
dampens the whipping motion of pipe,
allowing the machine tool to produce
API and premium threads on the end of
each pipe with greater confidence.
Pinch rolls are used at the head of
the Thread Table to protect the machine
tool, while elevating V-rolls enable
various diameter pipes to be fed into
the machine tool at the proper elevation.
The new design is meant to eliminate
costly repairs caused when pipes bump
the machine tool upon entry.
Brandt Engineered Products Ltd –
Canada
Website:
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