Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Welder 1 > 120103f > Flashcards

120103f Flashcards

1
Q

Is it necessary to remove oil and paint from the base metal? Explain your answer

A

Yes any excess oil, paint or coatings should be removed to prevent contamination of the weld zone and reduce any harmful fumes that may be produced

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Describe how to execute a weave bead

A

A weave bead is completed with a side to side motion while moving in the direction of travel is taking place

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Changing the angle of the electrode holder in relation to the joint
a) changes the voltage
b) has no effect on the weld
c) causes the weld profile to change
d) causes the wire to feed unevenly

A

c) causes the weld profile to change

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The number and letter combination of 3GF
a) represents the type of filler wire and shielding gas to be used
b) indicates the vertical position with a combination groove and fillet weld
c) requires the joint to be completed in 3 passes and ground flat
d) indicates that a mix of 3 shielding gases is required

A

b) indicates the vertical position with a combination groove and fillet weld

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Sketch the joint preparation and fit up of a typical CWB 1GF joint test weld using the FCAW process

A

Find on page 50

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Does welding position have any influence on FCAW machine settings.

A

Yes, position has significant influence on machine settings.
Vertical settings are likely lower than horizontal.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How would you likely do surface welding on a vertical surface using FCAW
a) travel horizontally starting from the top of the surface
b) travel horizontally starting from the bottom of the surface
c) travel vertically uphill starting from the bottom left corner
d) travel vertically downhill starting from the top right hand corner

A

b) travel horizontally starting from the bottom of the surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the main advantage of FCAW over GMAW?
a) deposition rates are higher
b) equipment is less expensive
c) wire is less expensive
d) welding current requirements are lower

A

a) deposition rates are higher

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

When multi pass welding with FCAW is it necessary to remove the slag between passes. Explain

A

Yes; the slag could get trapped between the passes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Why are back up bars often employed on FCAW groove welds
a) open gaps cause potentially damaging current surges in the main transformer coils of the power source
b) FCAW root beads in open gaps are characterized by lack of fusion
c) loss of gas coverage is a problem with FCAW in an open gap
d) it is difficult to control penetration in an open gap with FCAW

A

d) it is difficult to control penetration in an open gap with FCAW

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How much stickout is recommended when using gas shielded FCAW with .045” wire
a) 1/8” - 3/8”
b) 3/8” - 3/4”
c) 3/4” - 1 1/2”
d) 3/32” - 1/8”

A

b) 3/8” - 3/4”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

When welding the fill passes with FCAW on a 1GF using 3/8” material what should the gun angle be in relation to the joint?
a) 10° towards the welder
b) one-half the angle formed at the centre of the bead to be placed
c) any angle that is comfortable to the welder
d) 10° away from the welder

A

b) one-half the angle formed at the centre of the bead to be placed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Most FCAW welding techniques use an electrode inclination of
a) 10° - 30° forehand
b) 40° - 80° forehand
c) 10° to 30° back hand
0° oe dead square

A

c) 10° to 30° back hand

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What must you be careful of when placing weave beads in a large groove weld?
a) slag entrapment
b) overheating the power source
c) overheating the gun nozzle
d) running out of wire

A

a) slag entrapment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What type of technique would you likely use on a 3F weld using 3/8” material when doing the cover pass
a) uphill stringer beads
b) uphill weave bead
c) downhill stringer bead
d) downhill weave bead

A

b) uphill weave bead

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Where is the fillet weld in a CSA 2G test assembly located
a) against the bevelled edge
b) against the square edge
c) there is no fillet weld in a 2G test assembly
d) the fillet weld is the cover pass

A

c) there is no fillet weld in a 2G test assembly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the main benefit of FCAW over GMAW

A

Productivity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

How is wire selected ?
a) to match the chemical & mechanical properties of the base metal
b) to have the wire thinner than the base metal to have better penetration
c) to have thicker wire than the base metal to fill the gap
d) to add different metal characteristics to the base metal

A

a) to match the chemical & mechanical properties of the base metal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

FCAW & MCAW shielding gas flow rates fall within:
a) 7L/min - 10L/min
b) 14L/ min - 23L/min
c) 18L/min - 28L/min

A

b) 14L/ min - 23L/min

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is the most common shielding gas for FCAW
a) 75% Argon, 25% O2
b) 78% Argon, 20% CO2, 2% O2
c) CO2 or 75% Argon 25% CO2
d) 85% argon 15% CO2

A

c) CO2 or 75% Argon 25% CO2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the most common shielding gas for FCAW
a) 75% Argon, 25% O2
b) 78% Argon, 20% CO2, 2% O2
c) CO2 or 75% Argon 25% CO2
d) 85% argon 15% CO2

A

d) 85% argon 15% CO2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

For FCAW & MCAW what parameters do you need?
a) constant amperage DCEN
b) constant amperage DCEP
c) constant voltage & DCEP
d) constant voltage & DCEN

A

c) constant voltage & DCEP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What does ESO stand for?

A

Electrode Stickout

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is the reccomended ESO for .035 wire?
a) 1/8” - 3/8”
b) 3/8” - 3/4”
c) 3/4” - 1 1/2”
d) 3/32” - 1/8”

A

b) 3/8” - 3/4”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What is the recommended ESO for 5/64” - 1/8” wire?
a) 1/8” - 3/8”
b) 3/8” - 3/4”
c) 3/4” - 1 1/4”
d) 3/32” - 1/8”

A

c) 3/4” - 1 1/4”

26
Q

What is the description of a herring bone weave pattern?

A

a sharp zig zag

27
Q

Does slag have a tendency to remelt on the next pass?

A

No, this is why you need to remove the slag well between each pass

28
Q

Why limit weave size when using FCAW?
a) flux could freeze on the edge before you can return to it
b) slag can be trapped causing lack of fusion
c) tendency to undercut
d) both a& b

A

d) both a& b

a) flux could freeze on the edge before you can return to it
b) slag can be trapped causing lack of fusion

29
Q

For a 1F weld position what angle is the weld surface tacked at compared to the horizontal plane?
a) 15°
b) 25°
c) 45°
d) 60°

A

c) 45°

30
Q

If you have the gun pointed straight up and down what is the electrode angle?
a) 15°
b) 25°
c) 45°
d) 60°

A

c) 45°

31
Q

What is the benefit of using a herringbone weave variation?

A

Herringbone weave helps prevent undercut on the cap

32
Q

In the 3F position which description is correct?
a) the weld is done vertically in the down hill progression
b) the weld is done vertically in the uphill progression
c) the weld is done horizontal in the forehand progression
d) the weld is done horizontal in the backhand position

A

b) the weld is done vertically in the uphill progression

33
Q

When using MCAW in the vertical position what metal transfer would you use?
a) globular
b) spray
c) pulse spray
d) short circuit

A

c) pulse spray
due to the pulse and having the heating and cooling this process is slower than FCAW

34
Q

MCAW welds in the 3F position which is true:
a) the weld is done vertically & downhill
b) the weld is done horizontally & forehand
c) the weld is done vertically & uphill
d) the weld is done horizontally & back hand

A

c) the weld is done vertically & uphill

35
Q

When performing a multi pass weld where do you place the first weld?
a) the bevel
b) the 90° angle
c) root
d) stringer

A

b) the 90° angle

36
Q

When incorporating your start and stops how far from the end of the coupon should you start/stop your first two passes?
a) 3/8”
b) 3/4”
c) 1 1/4”
d) 1 1/2”

A

d) 1 1/2”

37
Q

What CSA Standard requires a stop in each of the fillet and groove passes?
a)W44.1
b)W45.1
c) W46.1
d) W47.1

A

d) W47.1

38
Q

When placing stringer and weave beads, as a rule of thumb you should achieve penetration into the?
a) Narrowest portion of the joint
b) Widest portion of the joint
c) Ensure gap is the same through out
d) is at the discretion of the welder

A

a) Narrowest portion of the joint
- is where the coupons make a 90° angle

39
Q

2G fit up with backing how far from the end of the coupons should the start/stops be incorporated?
a) 1/2”
b) 3/4”
c) 1”
d) 1 1/2”

A

d) 1 1/2”

40
Q

When is the only time you use forehand direction when using FCAW
a) horizontal
b) vertical
c) overhead
d) you dont use forehand with FCAW

A

b) vertical

41
Q

with a 3GF weld what progression is used for all welds
a) uphill
b) downhill
c) forehand
d) downhand

A

a) uphill

42
Q

When referencing a 1GF what does GF define?
a) ground flush
b) groove fillet
c) gouge flush
d) gauge fillet

A

b) groove fillet

43
Q

Choose the travel speed recommended for a 2F using FCAW process.
a) 150 IPM
b) 200 IPM
c) maintain wire at the bas of the puddle
d) maintain wire at the leading edge of the puddle

A

d) maintain wire at the leading edge of the puddle

44
Q

What is the required power source for MCAW?
a) CV with DCEN
b) CV with DCEP
c) CC with DCEN
d) CC with DCEP

A

b) CV with DCEP

45
Q

What are the recommended shielding gas rates for FCAW and MCAW process?
a) 15 - 30 CFH
b) 20 - 35 CFH
c) 30 - 50 CFH
d) 50 - 60 CFH

A

c) 30 - 50 CFH

46
Q

What is an action required of the welder to maintain good sound welds with FCAW, that may not be an essential with GMAW or MCAW?
a) inter pass cleaning
b) adjust voltage settings between passes
c) change the angle of the electrode to reduce undercut
d) maintain the wire at the leading edge of the puddle

A

a) inter pass cleaning

47
Q

What is the recommended electrode stick out for wire .036 (1/16”) using FCAW process?
a) 1/8”- 1/4”
b) 3/8” - 3/4”
c) 5/8” - 1”
d) stickout is automatically regulated

A

b) 3/8” - 3/4”

48
Q

What type of gas shielding is required for the FCAW process?
a) pure CO2 with 10% O2 added
b) 25% CO2 and 75% Ar
c) mix of 85% Ar and 15% CO2
d) Ar & N2 mix

A

b) 25% CO2 and 75% Ar

49
Q

A 3F lap joint done on 3/8” thick plates welded with the MCAW process could be completed with how many passes when using the triangular welding technique
a) 1 pass
b) 2 passes
c) 3 passes
d) 4 passes

A

a) 1 pass

50
Q

The weld deposit efficiency rate for the MCAW process is
a) better than the FCAW process
b) excellent compared to the GMAW process
c) is 92-98 % efficient
d) all of the above

A

d) all of the above

51
Q

An uphill 3F lap joint done with MCAW requires which mode of metal transfer?
a) short circuit
b) globular
c) spray
d) pulsed spray arc

A

d) pulsed spray arc

52
Q

An important requirement prior to selecting the filler wire for a job is to:
a) match the wire to the welding position
b) select the wire for the material thickness
c) choose wire size according to the equipment capabilities
d) all of the above

A

d) all of the above

53
Q

Which of the following is a priority procedure before starting to weld on base materials
a) preheat all materials before welding
b) match the wire to the chemical and mechanical properties of the material
c) material heat numbers must match filler wire
d) adjust voltage and current settings for the material thickness

A

b) match the wire to the chemical and mechanical properties of the material

54
Q

A lap joint with the surfaces at 45° to the horizontal plane describes:
a) 1F
b) 1G
c) 2F
d) 2G

A

a) 1F

55
Q

A 3F weld done with MCAW is slower than if it was done with FCAW T/F

A

True due to the spray pulse metal transfer needed with MCAW

56
Q

When performing the FCAW process what electrode angle is recommended for a 1F lap joint?
a) 180°
b) 90°
c) 0-30°
d) 1/2 the included joint angle

A

d) 1/2 the included joint angle

57
Q

An excessive weave width pattern done with the FCAW process could cause:
a) lack of fusion
b) slag entrapment
c) flux to solidify at the toes
d) all of the above

A

d) all of the above

58
Q

What type of shielding gas is required for the MCAW process?
a) pure argon
b) pure CO2
c) 75% Ar 25 % CO2
d) 85% Ar 15% CO2

A

d) 85% Ar 15% CO2

59
Q

The main benefit of using FCAW or MCAW over GMAW is:
a) less fumes are emitted
b) less training is required
c) more productivity is achieved
d) costs are considerably lower

A

c) more productivity is achieved

60
Q

What is the recommended transfer mode for a 2F lap joint using 3/8” material welded with MCAW
a) Short circuit
b) globular
c) spray
d) pinch effect

A

c) spray

61
Q

What is the recommended technique used for a single pass 3 F lap joint using the MCAW process?
a) herringbone weave
b) manipulative stringer
c) christmas tree
d) crescent weave

A

c) christmas tree

Welder 1 (40 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions