Q6-43.
What is another name for a low-pressure
appropriate steps to protect them from damage. If it is
welding torch?
necessary to carry cables some distance from the
machines, run the cables overhead, if possible, and use
Q6-44.
What color is the acetylene hose on an
adequate supporting devices.
oxyacetylene welding system?
When you use a portable machine, take care to see
Q6-45.
The thread fittings for the oxygen hose
that the primary supply cable is laid separately so that it
hookup of an oxyacetylene welding system
does not become entangled with the welding supply
always have what type of threads?
cable. Any portable equipment mounted on wheels
Q6-46.
Regardless of the shade of your welding
should be securely blocked to prevent accidental
goggle's lens, they should be protected by
movement during the welding operations.
what type of material?
When you stop work for any appreciable length of
Q6-47.
Bronze and aluminum welding rods are
time, be SURE to de-energize the equipment. When
examples of what type of welding rods?
not in use, the equipment should be completely dis-
connected from the source of power.
Q6-48.
What type of flame has three distinct zones
and is used to weld nickel alloys?
Keep the work area neat and clean. Among other
things, make it a practice to dispose of hot electrode
Q6-49.
What type of flame has a small, white pointed
stubs in a metal container.
cone in the inner zone with a purple tinge and
is used to fuse brass and bronze?
Proper eye protection is of the utmost importance,
not only to the welding operator, but for other personnel
Q6-50.
An overheated welding tip, accompanied by a
in the vicinity of the welding operation. Eye protection
popping sound, indicates what action has
is necessary because of the hazards posed by stray
occurred?
flashes, reflected glare, flying sparks, and globules of
Q6-51.
Define the term "flashback" as it applies to a
molten metal.
welding torch.
Q6-33.
Welding training and testing are conducted at
Q6-52.
When the torch is held properly, the tip should
what facilities?
be in line with what structure?
Q6-34.
What is the recertification interval for
Q6-53.
What welding technique is the best method for
IMA-level aeronautical equipment welders if
welding lighter metals?
proficiency is maintained?
Q6-54.
Tee and lap joints are classified as what type
Q6-35.
If you fail the first test weld(s), what amount
of welds?
of time do you have to submit the retest welds
after notification of failure?
Q6-55.
Corner and butt joints are classified as what
type of welds?
Q6-36.
What are the two main purposes of the
welding torch?
Q6-56.
What type of joint is formed when two pieces
of metal are placed edge-to-edge with no
Q6-37.
What is the temperature range of acetylene
overlap and welded together?
when mixed with oxygen?
Q6-57.
What type of joint is formed when two pieces
Q6-38.
What are the three main characteristics of
of metal are welded approximately
oxygen?
perpendicular to each other?
Q6-39.
If an oxygen bottle has a white band around it,
Q6-58.
What type of joint is formed by welding two
what type of oxygen does it contain?
overlapping metals together?
Q6-40.
What pressure does the low pressure (0 to 500
Q6-59.
What type of joint is formed when two or more
psi) gauge on a single-stage regulator
parallel or nearly parallel pieces of metal are
indicate?
welded together?
Q6-41.
Acetylene is colorless, but has what feature
Q6-60.
What type of electrode is used in GTA welding
that makes it easily detected?
because of its ability to resist high
Q6-42.
At what pressure does acetylene become
temperatures?
self-explosive?
6-35