AIT ALBERTA WELDING FIRST YEAR FINAL EXAM 350
QUESTIONS AND VERIFIED ANSWERS
Shielding gas for gmaw on carbon steel? - ANSWER-100%
C02 ( cheap, deep penetrating, fluid puddle, more spatter),
C25 75% argon 25% C02( only for short circuit and globular,
Argon oxygen
Stainless steel gmaw shielding gases - ANSWER-Argon 02 1-
9%( spray transfer), helium/argon/C02 (tri mix, good for short
circuit)
Shielding gasses for gmaw alluminum - ANSWER-Argon 100%
(easy start arc, spray transfer ability and most common)
Helium( no spay trans ability and expensive)
What are sub assemblies - ANSWER-It is a method of
reducing distortion by breaking the work into a number of
component parts and welding them first before attaching
them to the main assembly
What are some procedural methods for avoiding distortion? -
ANSWER-Planning the weld sequence, welding around the
neutral axis, stagger welding, skip welding, back step
welding, tack welding, pre set and joint prep, use fewer weld
passes, welding at fast even rate of travel
,What 5 types of welding joints are there - ANSWER-Butt,
corner, tee, edge, lap (BCTEL)
What 4 types of welds are there - ANSWER-Groove, fillet,
plug or slot, surfacing
What types of fillet welds are there? - ANSWER-Continuous,
intermittent, chain intermittent, and staggered intermittent
What are the two types of edge joints - ANSWER-Single
flanged and double flanged
What 5 types of butt joints are there - ANSWER-Square,
bevel, v groove, j groove, u groove
What are the 5 types of tee joints - ANSWER-Square, single
bevel, single j groove, double bevel, double j groove
Welding position 1 means what - ANSWER-Flat
Welding position 2 means? - ANSWER-Horizontal
Welding position 3 means? - ANSWER-Vertical
,Welding position 4 means? - ANSWER-Overhead
Welding position 5 means? - ANSWER-Pipe with the axis in
the fixed horizontal
Welding position 6 means? - ANSWER-Pipe with the axis in
the 45• position
Electrode angle is always what? - ANSWER-Half included
joint angle
What regulates the amperage in a CV power source -
ANSWER-Wire feed speed
What does the S in ER70S-6 mean? - ANSWER-Product
composition or solid wire
ER70S-6 -6 means? - ANSWER-Chemical composition
(amount of deoxidizers)
Inductance and slope only have an effect on what mode of
metal transfer - ANSWER-Short circuit
, Less short circuits means? - ANSWER-More arc on time
Slope is what? - ANSWER-Limit the amount of short
circuiting current
Out of position work with spray you do what? - ANSWER-Go
into pulse spray mode of metal transfer
Modified short circuit works best for what? - ANSWER-Open
roots
Fcaw E70T-X what does the T mean - ANSWER-Tubular
E70T-x 7 is what - ANSWER-Minimum tensile strength
E70T-X 0 means? - ANSWER-Position designator
E70T-x what is x - ANSWER-Type of flux and tells wether gas
shielded or shelf shielded
What types of fluxes are there - ANSWER-Rutile and basic(
low hydrogen)
QUESTIONS AND VERIFIED ANSWERS
Shielding gas for gmaw on carbon steel? - ANSWER-100%
C02 ( cheap, deep penetrating, fluid puddle, more spatter),
C25 75% argon 25% C02( only for short circuit and globular,
Argon oxygen
Stainless steel gmaw shielding gases - ANSWER-Argon 02 1-
9%( spray transfer), helium/argon/C02 (tri mix, good for short
circuit)
Shielding gasses for gmaw alluminum - ANSWER-Argon 100%
(easy start arc, spray transfer ability and most common)
Helium( no spay trans ability and expensive)
What are sub assemblies - ANSWER-It is a method of
reducing distortion by breaking the work into a number of
component parts and welding them first before attaching
them to the main assembly
What are some procedural methods for avoiding distortion? -
ANSWER-Planning the weld sequence, welding around the
neutral axis, stagger welding, skip welding, back step
welding, tack welding, pre set and joint prep, use fewer weld
passes, welding at fast even rate of travel
,What 5 types of welding joints are there - ANSWER-Butt,
corner, tee, edge, lap (BCTEL)
What 4 types of welds are there - ANSWER-Groove, fillet,
plug or slot, surfacing
What types of fillet welds are there? - ANSWER-Continuous,
intermittent, chain intermittent, and staggered intermittent
What are the two types of edge joints - ANSWER-Single
flanged and double flanged
What 5 types of butt joints are there - ANSWER-Square,
bevel, v groove, j groove, u groove
What are the 5 types of tee joints - ANSWER-Square, single
bevel, single j groove, double bevel, double j groove
Welding position 1 means what - ANSWER-Flat
Welding position 2 means? - ANSWER-Horizontal
Welding position 3 means? - ANSWER-Vertical
,Welding position 4 means? - ANSWER-Overhead
Welding position 5 means? - ANSWER-Pipe with the axis in
the fixed horizontal
Welding position 6 means? - ANSWER-Pipe with the axis in
the 45• position
Electrode angle is always what? - ANSWER-Half included
joint angle
What regulates the amperage in a CV power source -
ANSWER-Wire feed speed
What does the S in ER70S-6 mean? - ANSWER-Product
composition or solid wire
ER70S-6 -6 means? - ANSWER-Chemical composition
(amount of deoxidizers)
Inductance and slope only have an effect on what mode of
metal transfer - ANSWER-Short circuit
, Less short circuits means? - ANSWER-More arc on time
Slope is what? - ANSWER-Limit the amount of short
circuiting current
Out of position work with spray you do what? - ANSWER-Go
into pulse spray mode of metal transfer
Modified short circuit works best for what? - ANSWER-Open
roots
Fcaw E70T-X what does the T mean - ANSWER-Tubular
E70T-x 7 is what - ANSWER-Minimum tensile strength
E70T-X 0 means? - ANSWER-Position designator
E70T-x what is x - ANSWER-Type of flux and tells wether gas
shielded or shelf shielded
What types of fluxes are there - ANSWER-Rutile and basic(
low hydrogen)
