| The D-Head model weld
head is "full function" - with the capability of reproducing all
the precise motions of a skilled manual GTAW welder. It is
specifically designed for multipass pipe welding applications.
The weld head consistently produces welds meeting the most
stringent code quality standards. The D-Head is used for
applications with radial and axial clearance constraints.
Used with the Pipemaster Power Source Models,
this weld head improves productivity by increasing duty cycle,
reducing repair rates and producing welds of consistent quality.
The D-Head is a compact head for smaller
diameter pipe applications with limited radial and axial
clearance around the weld. Ideal for orbital pipe welding.
WELD HEAD MOUNTING/ROTATION
The weld head is mounted on the pipe by means of
metal Guide Rings, which are available for all standard pipe /
tube sizes. The weld head mounts entirely on one side of the
joint, allowing use for pipe-to-fitting welds.
WIRE FEEDER
The compact Head-mounted wire feeder is
electronically controlled for accurate and repeatable filler
wire delivery. It mounts a standard 0.9 kg (2lbs.) spool. For
applications requiring minimum radial clearance, a special "Low
Profile" wire spool is used.
TORCH OSCILLATION (WEAVE)
The width and speed of the torch oscillation
stroke are independently programmed. Torch "Dwell" is
independently adjustable at both oscillation stroke end points.
A "Cross Seam Adjustment" steering control on the remote Pendant
allows the welder to track the torch on the weld seam without
the need for manual adjustments near the arc. Pulsed current is
automatically synchronized with torch oscillation when both
functions are operated simultaneously.
ARC GAP CONTROL (ARC VOLTAGE CONTROL)
The Arc Gap Control electronically maintains a
desired arc length as the torch rotates around the pipe.
USE ON PREHEATED PIPES
The D-Head drive system incorporates
heat-tolerant components and a water-cooled housing for use on
CrMo and other alloys requiring preheat. Mounting the head on
an oversize Guide Ring with adapter feet creates an air space,
preventing heat damage. |
