TPT May 2008

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Tube & Pipe Welding: Trends & Progress
M ay 2008 88 ›
resistant containers that ensure consistent
performance. With Lincoln Pipeliner
consumables, operators can achieve a
clean weld deposit, uniform bead shape
and excellent puddle control providing good
wash-in at the weld toes.
This range of consumables is
manufactured under a quality system
certified to ISO 9001 requirements and
manufactured to actual lot control and
testing. No matter what the application,
there is a Pipeliner product that provides
an excellent welding solution.
Lincoln Electric’s global network of
manufacturing and distribution facilities
allows optimal mobilization and deployment
of resources for pipe contractors. The
Lincoln Electric Company offers advanced
design, development and manufacture of
arc welding products, robotic arc-welding
systems, plasma and oxyfuel cutting
equipment.
Lincoln Electric Company – USA
Fax: +1 216 486 1751
Website:
consumables for pipeline construction.
Every Pipeliner consumable is designed
to work in partnership with an array of
Lincoln Electric equipment, providing
optimized results in quality and
productivity on the most demanding types
of applications
Pipeliner electrodes stand up to the
harshest environments, as they are
packaged in hermetically-sealed, moisture-
Pipeliner® is Lincoln Electric’s portfolio of
premium SMAW (stick), GMAW (MIG),
and FCAW (flux-cored) consumables
developed specifically to meet the rigorous
demands of the global pipe welding
industry. According to the company, they
are the most thoroughly tested pipe welding
consumables on the market today.
Lincoln Electric provides innovative
welding technology, equipment and
Increasing safety standards and an
obligation to reduce weight and material
content have increased the importance
of high strength steels for many uses.
Because of their structural rigidity more and
more profiles will be designed as welded
‘hollow’ shapes. For these applications,
induction welding offers some interesting
alternatives.
Dreistern, Germany, has launched a new
weld-table offering advantages when
working with these materials. The design
provides up to 100kN of press-force,
sufficient for most profiling demands. Due
to its quick-change design, all product-
related components are changed over in
a very short time. Individual reproducible
settings of all rolls and lateral adjustments
ensure exact alignment of strip edges
and profile, increasing the accuracy of the
welded shape.
Composite tubes combine both the corro-
sion resistance properties of plastic tubes
and the bursting pressure of metal pipes.
Dreistern’s collaboration with the extruder
manufacturer Maillefer
has helped to evolve
the system technology.
Another milestone was
the integration of the
disc-laser, a new gen-
eration laser support-
ing weld-speeds of up
to 60m/min.
The Trumpf disc-laser
is equipped with a
highly dynamic seam-
tracking system.
Despite higher welding
speeds, this new
technology actually
reduces energy
consumption.
Welding physics limit the maximum
possible weld speed for all welding
techniques, including laser welding. Laser
experts use the term ‘humping’ to refer to
a dynamic process in the weld pool that
occurs particularly at high welding speeds,
causing unwanted humps and deficiencies
to form at periodic intervals along the
weld.
By varying the parameters, it is possible
to push the humping threshold to higher
speeds. Trumpf and Dreistern have
cooperated to develop a new production
system for manufacturing tube sections at
high speeds.
Dreistern GmbH & Co KG – Germany
Fax: +49 7622 391 205
Email:
Website:
Portfolio of premium consumables for
pipeline welding
Faster weld-speeds with less energy
 Lincoln offers a comprehensive range of Pipeliner welding wire
 Fast and energy efficient laser-technology for composite tubes
 High-speed laser-welding of welded shapes