Handling The Pipe; Welding - AXXAIR SATF-40NDHX Notice Originale

INNOVATIVE ORBITAL SOLUTIONS
11.

Handling the pipe:

CAUTION: SATF weld heads are attached to the pipe and support their own weight. Weld heads cannot
withstand the alignment forces of long pipes. For length greater than 350 mm, you must tack weld the
pipe or support pipe weight using alignment systems and not the weld head .
To ensure proper geometrical alignment it is recommended to manually tack weld the
work pieces to be welded or use the weld head in tack weld operation mode.

Welding:

Welding is performed as follows:

Put the rotor in the open position:

Arranging the two pieces to be welded: close the frames using the toggle clamps and aligning the
electrode with the section to be welded.

Purge the system to evacuate oxygen in the hoses and in the weld head (do this when using the
system for the first time or when the system has not been in operation for a substantial period of
time).

Proceed with inertising the pipe (see the systems recommended by AXXAIR)

The welding starting position is the open rotor position.

Select the correct welding program.

The program selected must include a pre-gas period sufficiently long to fill the weld head:
approximately 20 to 30 seconds, depending on the weld head used, at a flow rate of 15/20 l/min.
Join experience
Rotor open position
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