TPT May 2008

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Tube & Pipe Welding: Trends & Progress
M ay 2008 118 ›
Magnatech’s D-Head has proven itself as
a rugged tool to automate pipe welding
in the fabrication shop or for site welding
applications. The compact weld head
utilizes the GTAW process and is designed
for making circumferential butt welds where
the pipe cannot be rotated.
Only 50mm of radial clearance between
pipes is required, allowing use for
applications difficult to weld manually
because of access. The redesigned head
incorporates all necessary functions
required for multi-pass welding including
high speed, arc gap control, filler wire feed
capability, torch rotation, endpoint ‘dwell’,
and torch oscillation with adjustable stroke
width.
While many orbital weld heads are limited
to very finite size ranges, the D-Head can
be used on any size of pipe or tube from
25mm up to 355.6mm. Therefore, one
weld head can cover a broad size range,
by changing only one component – the
guide ring. Guide rings are available for all
standard ‘boiler tube’ sizes. A contractor
can purchase the equipment for a specific
job, knowing that it can be used for future
jobs as well.
The D-Head is designed for use with
Magnatech’s new digital power supplies.
The D-Head mounts on only one side of
the weld joint. Pipe-to-fitting welds can be
made as simply as pipe-to-pipe welds. The
water-cooled head can be used on pipe
alloys requiring preheat.
The D-Head is capable of substantially
increasing productivity by increasing the
duty cycle of the welding process. Users
have reported increased welding production
by a factor of 2-3 as compared to manual
welding. The weld head can be used in any
gravity position.
Magnatech Ltd Partnership – USA
Fax: +1 860 653 0486
Email:
Website:
Simplified 200 amp orbital
welding power supply
Swagelok Company, Switzerland, has
launched the new Swagelok® welding
system M200 power supply, that offers ease
of use, portability, and 200 amp capability,
with a weight of less than 50lb (23kg).
Users can choose from one of three forms
to enter weld programs, including automatic
weld schedule programming. The M200’s
automatic shield gas control (patent
pending) simplifies set-up of shielding gas,
requiring no use of a separate flow meter.
Universal voltage input (100 to 230 V
[ac]) requires only a cord/plug change to
accommodate an input voltage. The M200
works with all currently available Swagelok
weld heads, and includes four USB ports,
Ethernet port, USB device (output) port,
VGA output, and serial port.
Swagelok Europe – Switzerland
Fax: +41 55 246 64 00
Website:
VIA MERCATELLI, 8 - LOC. S.ANNA - 31058 SUSEGANA (TV) - TEL. 0438.482032 - FAX 0438.482076
- e-mail
CIRCULAR SAW AND BAND SAW BLADES FOR METAL
Redesigned tool welds pipe ‘in-place’
 Magnatech’s D-Head tool for automated pipe
welding