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Amt 110 Progressive 1 " Wielding

Terms in this set (37)

Edge notching is generally recommended in
butt welding above a certain thickness Of aluminum because it
aids in getting full penetration of the metal and prevents local distortion
Which statement concerning soldering
is correct?
Joints in electric wire to be soldered should be mechanically secure prior to soldering.
Cylinders used to transport and store acetylene
contain acetone
Why are aluminum plates 1/4 inch or more thick usually preheated before welding?
Reduces internal stresses and assures more complete penetration.
Oxides form very rapidly when alloys or metals are hot. It is important, therefore, when welding aluminum to use a
flux
The shielding gases generally used in the Gas Tungsten Arc (GTA) welding of aluminum consist of
helium or argon, or a mixture of helium and argon
Engine mount members should preferably be repaired by using a
larger diameter tube with fishmouth and rosette welds
Oxygen and acetylene cylinders are made of
steel
Which statement best describes magnesium welding?
Filler rod should be the same composition as base metal.
In selecting a torch tip size to use in welding, the size of the tip opening determines the
amount of heat applied to the work
Welding over brazed or soldered joints is
not permitted
If too much acetylene is used in the welding of stainless steel,
the metal will absorb carbon and lose its resistance to corrosion
Why is it necessary to use flux in all silver
soldering operations?
To chemically clean the base metal of oxide film.
Where should the flux be applied when
oxyacetylene welding aluminum?
Painted on the surface to be welded and applied to the welding rod.
Which statement is true in regard to welding heat-treated magnesium?
The welded section does not have the strength of the original metal.
A very thin and pointed tip on a soldering copper is undesirable because it will
cool too rapidly
A welding torch backfire may be caused by
a loose tip
High pressure cylinders used to transport and
store acetylene must
contain acetone
The oxyacetylene flame used for aluminum welding should
be neutral and soft
Which statement concerning a welding
process is
true?
The inert-arc welding process uses an inert gas to protect the weld zone from the atmosphere.
The most important consideration(s) when
selecting welding rod is
material compatibility
What purpose does flux serve in
welding
aluminum?
Minimizes or prevents oxidation.
When selecting a welding rod, one of the
most important factors
to consider is to
ensure that
The proper AMS specification number is used
How should a welding torch flame be adjusted to weld stainless steel?
slightly carburizing
Filing or grinding a weld bead is considered to be
a way to bring about strength reduction in joint
In Gas Tungsten Arc (GTA) welding, a stream of inert gas is used to
prevent the formation of oxides in the puddle
Annealing of aluminum
removes stresses caused by forming
which of the following can normally be
welded without adversely affecting
strength?
SAE 4130 chrome/molybdenum tubing
The oxyacetylene flame for silver soldering should be
neutral
What method of repair is recommended for a steel tube longeron dented at a cluster?
welded patch plate
Which statement best describes magnesium welding?
It can be welded successfully using the same type of joints that are used for aluminum.
Acetylene at a line pressure above 15 PSI is
dangerously unstable.
A resurfaced soldering iron cannot be used effectively until after the working face has been
tinned
Why should a carburizing flame be avoided when welding steel?
it hardens the surface
when a butt-welded joint is visually
inspected for penetration,the
penetration should be
100 percent of the thickness of the
base metal.
In gas welding, the amount of heat applied to the material being welded is controlled by the
size of the tip opening
When welding or cutting, the acetylene pressure gauge should never be set higher than
15 psi
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