Worksheets29304-15 GTAW - Carbon Steel Pipe
Total questions: 10
Worksheet time: 5mins
Even when other welding processes are primarily used for a pipe weld, GTAW is often used to make the _____.
cover pass
tack welds
root pass
weave beads
Oxygen sources must be kept away from _____.
anti-spatter sprays
filler rods
hexavalent chromium
petroleum products
According to typical ASME, API, and AWS pipe bevel specifications, the root face should be no more than
_____.
1/16" (1.6 mm)
1/8" (3 mm)
1/4" (6 mm)
1/2" (13 mm)
The generally preferred power type and polarity for GTAW is _____.
DCEN
DCEP
AC
ACEP
For welding in the 1G-ROTATED, 2G, and 5G positions, the pipe axis can vary from the basic position by as much as _____.
5 degrees
10 degrees
15 degrees
20 degrees
Carbon steel pipe welds made with GTAW normally require a 15- to 20-degree _____.
push angle
drag angle
work angle
bevel angle
A technique used to prevent contamination of the electrode when feeding the filler rod into the weld puddle is to _____.
change from a push angle to a slight drag angle
change the work angle about 10 degrees temporarily
move the torch toward the back edge of the puddle
move the torch toward the leading edge of the puddle
When using GTAW on carbon steel pipe in the 1G-ROTATED position, run all passes at or near a point _____.
at the top of the pipe as it rotates
at the bottom of the pipe as it rotates
that is 45 degrees from the top of the pipe
that is 90 degrees from the bottom of the pipe
When using GTAW for open-root V-groove welds on carbon steel pipe in the 2G position, what can you do to prevent the weld puddle from sagging?
Increase the travel speed.
Increase the welding current.
Raise the torch work angle slightly, but not more than 10 degrees.
Drop the torch work angle slightly, but not more than 10 degrees.
When using GTAW for open-root V-groove welds on carbon steel pipe in the 5G position, start at a tack weld positioned at the _____.
top of the pipe and weld downhill
bottom of the pipe and weld uphill
right side of the pipe and weld downhill
left side of the pipe and weld downhill
