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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
Which welding process is considered to be a chemical process?
OAW
26
Which arc welding process provides an efficient means of joining attachments to some planar surface?
SW
27
Brazing differs from welding in that;
The base metal is not melted
28
For satisfactory results, a braze joint should have:
A large surface area and a small gap between pieces to be joined
29
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
Ease of joining thick sections
30
which cannot be effectively cut using OFC?
Stainless steel
31
Which of the following gases can be used to perform OFC?
MAPP, propane, acetylene, natural gas
32
Which of the following cutting processes can be used to cut any metal?
PAC and CAC-A
33
The width of a cut is technically referred to as the:
Kerf
34
Which process is illustrated below?
GTAW
35
ESW designates which process?
Electroslag welding
36
Which process is illustrated below?
PAW
37
Which process is illustrated below?
GMAW
38
Which process is illustrated below?
SMAW
39
SMAW designates which process?
Shielded metal arc welding
40
SW designates which process?
STUD WELDING
41
SAW designates which process?
Submerged arc welding
42
FCAW designates which process?
Flux cored arc welding?
43
GMAW designates which process?
Gas metal arc welding
44
GTAW designates which process?
Gas tungsten arc welding
45
PAW designates which process?
Plasma Arc Welding
46
Which of the following could result in the creation of porosity in the GTAW of 6061-T6 aluminum structural members for an aircraft application?
Insufficient cleaning of the joint, contaminated filler metal, leak in the shielding gas hose, or presence of drafts during welding operation
47
An ER70S-6 electrode can be used with which of the processes?
GTAW, GMAW, and PAW
48
A granular flux is a characteristic of which of the following?
ESW and SAW
49
Which of the classifications listed below produces the strongest weld metal? What should you look at in the number classification?
Just look at the PSI
50
Which process is classified as a chemical welding method?
OAW
51
Which cutting methods use electricity?
PAC and CAC-A
52
A tubular electrode is a significant characteristic of which process?
FCAW
53
Which arc welding process is used very effectively for the welding of various types of attachments to surfaces of plates and structural members?
SW
54
Molding shoes is a term associated with which process?
ESW
55
Short circuiting metal transfer is a mode of operation for:
GMAW
56
The need for electrode holding ovens for some types of filler metal is a disadvantage of which process below?
SMAW
57
Which process uses a carbon electrode?
CAC-A
58
EWTh-1 is an electrode designation for which of those processes listed below?
GTAW (not PAW)
59
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?
Furnace
60
F7P6-EM12 is a filler metal designation for:
SAW
61
The ability to perform keyhole welding is a primary advantage of:
PAW
62
Which gases can be used for OFW?
Acetylene
63
Which gases below can be used for TB?
Acetylene, oxygen, natural gas, propane
64
A ferrule is an item used for shielding in which process below?
SW
65
When GTAW is used, what type of current results in the greatest amount of penetration?
DCEN
66
A constricting nozzle is one of the components for which welding process?
PAW
67
What gases can be used for GMAW?
Carbon dioxide, argon, 75% argon—25% carbon dioxide, 98% argon — 2% oxygen
68
The process which can be used either with or without an external shielding gas is:
FCAW
69
Which of the welding processes below is generally considered to provide the highest deposition rate?
ESW
70
When welding carbon steel with the OAW process, the torch should be adjusted to provide:
Neutral flame
71
Of the following, which of the processes make use of water-injected torches to minimize the effect of irregular kerf?
PAC
72
The use of a constricting orifice, is the distinguishing feature of which of the following?
PAW
73
Which of the following processes utilize a flux to provide necessary shielding?
SAW

CWI (15 decks)

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