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CWI > Chapter 10: Welding, Brazing, And Cutting Processes > Flashcards

Chapter 10: Welding, Brazing, And Cutting Processes Flashcards

1
Q

Which is not necessary requirement for a welding process?

A

Electricity (but you do need a source of energy and means of shielding molten metal)

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2
Q

Which are functions of the flux coating of a SMAW electrode?

A

Insulating, deoxidation, alloying, and shielding

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3
Q

In the AWS system of SMAW electrode designations, the next to the last number refers to:

A

Position

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4
Q

Which of the following is an incorrect statement about a SMAW electrode designated as an E7024?

A

That it is low hydrogen (they end in 5, 6, or 8)

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5
Q

Which of the following is an essential part of a typical SMAW system?

A

Constant current power supply, covered electrode, electrode lead, work lead but a wire feeder is NOT essential

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6
Q

Shielding of the molten metal in GMAW is accomplished through the use of:

A

Inert and reactive gasses

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7
Q

Which of the following is not considered a type of metal transfer for GMAW?

Short circuiting, spray, globular, droplet, pulsed arc

A

Droplet

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8
Q

Which of the following types or metal transfer in GMAW is considered to be the lowest energy, and therefore prone to incomplete fusion?

A

Shot circuiting

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9
Q

What type of welding process is pictured below?

A

SAW

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10
Q

Which of the following is not considered an arc welding process?

SMAW, GMAW, FCAW, ESW, None

A

ESW

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11
Q

In the electrode designation system for FCAW, the second number refers to:

A

Position

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12
Q

Which of the following is not always as essential element of FCAW system?

A

Shielding gas

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13
Q

What aspect of the GTAW and PAW processes is different from the other arc welding processes?

A

Nonconsumable electrode

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14
Q

Shielding for the GTAW and PAW processes is accomplished through the use of:

A

Inert gas

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15
Q

A green stripe on tungsten electrode designates:

A

Pure tungsten

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16
Q

When welding aluminum with the GTAW process, what type of welding current is most commonly used?

A

AC alternating current

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17
Q

SAW and ESW are similar in that:

A

Both use granular flux

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18
Q

The diagram below depicts what welding process?

A

FCAW

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19
Q

Solidification cracking due to improper width-to-depth ratio of the weld nugget may be a problem with which welding process?

A

SAW

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20
Q

A welding process done essentially in the flat position with welding progressing from the bottom to the top of the weld joint positioned vertically identifies:

A

ESW

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21
Q

Which of the following are not common to both GTAW and PAW?

A

Copper constricting orifice (only PAW has copper)

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22
Q

What technique is employed with PAW to produce full penetration welds?

A

Keyhole

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23
Q

What welding process produces welds in the flat position, in a single pass, with the progression vertically upward along the joint?

A

ESW

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24
Q

Which of the following is not an advantage of the ESW process?

A

Ease of setup

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25
Q

Which welding process is considered to be a chemical process?

A

OAW

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26
Q

Which arc welding process provides an efficient means of joining attachments to some planar surface?

A

SW

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27
Q

Brazing differs from welding in that;

A

The base metal is not melted

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28
Q

For satisfactory results, a braze joint should have:

A

A large surface area and a small gap between pieces to be joined

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29
Q

Which of the following is not an advantage of brazing?

Ease of joining thick sections, ability to join disimilar metals, ability to join thin sections

A

Ease of joining thick sections

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30
Q

which cannot be effectively cut using OFC?

A

Stainless steel

31
Q

Which of the following gases can be used to perform OFC?

A

MAPP, propane, acetylene, natural gas

32
Q

Which of the following cutting processes can be used to cut any metal?

A

PAC and CAC-A

33
Q

The width of a cut is technically referred to as the:

A

Kerf

34
Q

Which process is illustrated below?

A

GTAW

35
Q

ESW designates which process?

A

Electroslag welding

36
Q

Which process is illustrated below?

A

PAW

37
Q

Which process is illustrated below?

A

GMAW

38
Q

Which process is illustrated below?

A

SMAW

39
Q

SMAW designates which process?

A

Shielded metal arc welding

40
Q

SW designates which process?

A

STUD WELDING

41
Q

SAW designates which process?

A

Submerged arc welding

42
Q

FCAW designates which process?

A

Flux cored arc welding?

43
Q

GMAW designates which process?

A

Gas metal arc welding

44
Q

GTAW designates which process?

A

Gas tungsten arc welding

45
Q

PAW designates which process?

A

Plasma Arc Welding

46
Q

Which of the following could result in the creation of porosity in the GTAW of 6061-T6 aluminum structural members for an aircraft application?

A

Insufficient cleaning of the joint, contaminated filler metal, leak in the shielding gas hose, or presence of drafts during welding operation

47
Q

An ER70S-6 electrode can be used with which of the processes?

A

GTAW, GMAW, and PAW

48
Q

A granular flux is a characteristic of which of the following?

A

ESW and SAW

49
Q

Which of the classifications listed below produces the strongest weld metal? What should you look at in the number classification?

A

Just look at the PSI

50
Q

Which process is classified as a chemical welding method?

A

OAW

51
Q

Which cutting methods use electricity?

A

PAC and CAC-A

52
Q

A tubular electrode is a significant characteristic of which process?

A

FCAW

53
Q

Which arc welding process is used very effectively for the welding of various types of attachments to surfaces of plates and structural members?

A

SW

54
Q

Molding shoes is a term associated with which process?

A

ESW

55
Q

Short circuiting metal transfer is a mode of operation for:

A

GMAW

56
Q

The need for electrode holding ovens for some types of filler metal is a disadvantage of which process below?

A

SMAW

57
Q

Which process uses a carbon electrode?

A

CAC-A

58
Q

EWTh-1 is an electrode designation for which of those processes listed below?

A

GTAW (not PAW)

59
Q

Of the following, which brazing process is preferred when the parts to be brazed can be assembled with the filler metal preplaced near or in the joint?

A

Furnace

60
Q

F7P6-EM12 is a filler metal designation for:

A

SAW

61
Q

The ability to perform keyhole welding is a primary advantage of:

A

PAW

62
Q

Which gases can be used for OFW?

A

Acetylene

63
Q

Which gases below can be used for TB?

A

Acetylene, oxygen, natural gas, propane

64
Q

A ferrule is an item used for shielding in which process below?

A

SW

65
Q

When GTAW is used, what type of current results in the greatest amount of penetration?

A

DCEN

66
Q

A constricting nozzle is one of the components for which welding process?

A

PAW

67
Q

What gases can be used for GMAW?

A

Carbon dioxide, argon, 75% argon—25% carbon dioxide, 98% argon — 2% oxygen

68
Q

The process which can be used either with or without an external shielding gas is:

A

FCAW

69
Q

Which of the welding processes below is generally considered to provide the highest deposition rate?

A

ESW

70
Q

When welding carbon steel with the OAW process, the torch should be adjusted to provide:

A

Neutral flame

71
Q

Of the following, which of the processes make use of water-injected torches to minimize the effect of irregular kerf?

A

PAC

72
Q

The use of a constricting orifice, is the distinguishing feature of which of the following?

A

PAW

73
Q

Which of the following processes utilize a flux to provide necessary shielding?

A

SAW

CWI (15 decks)

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