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CWB WELDING INSPECTOR LEVEL 3 EXAM LATEST 2026-2027
ACTUAL EXAM WITH COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (100% VERIFIED ANSWERS) |ALREADY
GRADED A+| ||PROFESSOR VERIFIED|| ||BRANDNEW!!!||
Weld beads are also cast structures and weld bead strengths will
be a function of the same parameters as the castings {
solidification rate (welding speed), quality and composition } -
ANSWER-True
What is the spacing of the constituents of a Al weld ? - ANSWER-
10 microns
What is the size of a grain in Al casting / weld ? - ANSWER-25
microns or greater
True / False
Poorest casting to fusion weld is an injection die casting -
ANSWER-True.
this is due to the large amount of entrained gas and lubricant in
this pressure casting that is liberated by fusion welding.
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The oxide on the cast surface will be _________ than on a
wrought product - ANSWER-thicker, it is important that the casting
surface is wire brushed thoroughly prior to welding
What is the min scrape depth for sand castings prior to welding? -
ANSWER-1.5 mm.
In the case of sand castings, it is likely that the surface will
have entrained sand particles.
what is the max amount of "other elements" in wrought and cast
Al alloys? - ANSWER-0.05 %
What is the total content of "other elements" in wrought and cast
Al alloys? - ANSWER-0.15 %
Is a certificate of analysis of Al alloys represent the actual analysis
of heat or lot of metal received? - ANSWER-No, It represents the
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limits of the composition of the alloy designation and is not an
actual analysis of heat or lot of metals received.
When is the actual analysis of heat required ? - ANSWER-if
problems in fabrication , joining or performance arise.
Actual analysis of heat is required for Weldments which are
expected to require high-service performance
Is weave welding allowed in Aluminum? - ANSWER-No,
C/S area withstanding the shrinkage strain is reduced when a
weave pattern weld is applied which will result in weld bead
cracking
True / False
During Al welding the cross -sectional area withstanding the
shrinkage strain is reduced when a weave pattern weld is applied
or a weld termination is made without a "crater fill" - ANSWER-
True
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True / False
GMA welding equipment with crater fill capability is recommended
to avoid getting a small C/S area to withstand the shrinkage
strain, thus avoiding weld bead cracking - ANSWER-True
Hoe does the use of filler alloys avoids cracking? - ANSWER-Use
GMAW and GTAW process.
Filler alloys like AA 5356 has the potential to move the weld
bead composition of an AA-5052 joint to a less crack-
sensitive region by increasing the magnesium in the weld
pool
What happens where when the filler alloy barely fuses to the walls
of the parent metal without any penetration occurring ? -
ANSWER-Weld bead composition will be at its max crack-
resistance composition
CWB WELDING INSPECTOR LEVEL 3 EXAM LATEST 2026-2027
ACTUAL EXAM WITH COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (100% VERIFIED ANSWERS) |ALREADY
GRADED A+| ||PROFESSOR VERIFIED|| ||BRANDNEW!!!||
Weld beads are also cast structures and weld bead strengths will
be a function of the same parameters as the castings {
solidification rate (welding speed), quality and composition } -
ANSWER-True
What is the spacing of the constituents of a Al weld ? - ANSWER-
10 microns
What is the size of a grain in Al casting / weld ? - ANSWER-25
microns or greater
True / False
Poorest casting to fusion weld is an injection die casting -
ANSWER-True.
this is due to the large amount of entrained gas and lubricant in
this pressure casting that is liberated by fusion welding.
,2|Page
The oxide on the cast surface will be _________ than on a
wrought product - ANSWER-thicker, it is important that the casting
surface is wire brushed thoroughly prior to welding
What is the min scrape depth for sand castings prior to welding? -
ANSWER-1.5 mm.
In the case of sand castings, it is likely that the surface will
have entrained sand particles.
what is the max amount of "other elements" in wrought and cast
Al alloys? - ANSWER-0.05 %
What is the total content of "other elements" in wrought and cast
Al alloys? - ANSWER-0.15 %
Is a certificate of analysis of Al alloys represent the actual analysis
of heat or lot of metal received? - ANSWER-No, It represents the
,3|Page
limits of the composition of the alloy designation and is not an
actual analysis of heat or lot of metals received.
When is the actual analysis of heat required ? - ANSWER-if
problems in fabrication , joining or performance arise.
Actual analysis of heat is required for Weldments which are
expected to require high-service performance
Is weave welding allowed in Aluminum? - ANSWER-No,
C/S area withstanding the shrinkage strain is reduced when a
weave pattern weld is applied which will result in weld bead
cracking
True / False
During Al welding the cross -sectional area withstanding the
shrinkage strain is reduced when a weave pattern weld is applied
or a weld termination is made without a "crater fill" - ANSWER-
True
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True / False
GMA welding equipment with crater fill capability is recommended
to avoid getting a small C/S area to withstand the shrinkage
strain, thus avoiding weld bead cracking - ANSWER-True
Hoe does the use of filler alloys avoids cracking? - ANSWER-Use
GMAW and GTAW process.
Filler alloys like AA 5356 has the potential to move the weld
bead composition of an AA-5052 joint to a less crack-
sensitive region by increasing the magnesium in the weld
pool
What happens where when the filler alloy barely fuses to the walls
of the parent metal without any penetration occurring ? -
ANSWER-Weld bead composition will be at its max crack-
resistance composition
