Exam 4 Flashcards

(92 cards)

1
Q

What does the ‘U’ in the TC-U9a joint design mean?

A

Metal thickness, U = unlimited

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2
Q

In the ‘Structural Welding Code - Steel’, which processes are prequalified?

A

GMAW, FCAW, SMAW, and SAW

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3
Q
Of the following, which is NOT a prequalified process?
A: FCAW
B: GMAW-S
C: SAW
D: SMAW
A

B: GMAW-S

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4
Q

Under AWS D1.1, of the following processes, which is NOT deemed as prequalified?
A: flux-cored arc
B: shielded metal arc
C: short-circuiting transfer gas metal arc
D: spray transfer gas metal arc

A

C: Short-circuiting transfer gas metal arc

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5
Q

Under AWS D1.1, is it possible for a WPS using GMAW-S to be qualified?

A

Yes, if the WPSs conform with the requirements of Clause 6.

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6
Q
Of the following processes, which are code approved?
A: EGW
B: ESW
C: GTAW
D: All of the above
A

D: All of the above

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7
Q

If AWS D1.1 code conformance is required would OFW-A be used for welding?

A

Yes, if the procedure was qualified per Clause 6.

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8
Q

Under AWS D1.1, how could a new welding process be used for welding?

A

It could be used by qualification of the WPSs under Clause 6.

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9
Q

All FCAW and GMAW prequalified WPSs are required to use _____ as a power supply.

A

CV (Constant Voltage)

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10
Q

Which standards must most base metals used in fabrication conform with?

A

ASTM and API Standards

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11
Q

High carbon steel is best welded with which kind of SMAW electrode?

A

Low Hydrogen

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12
Q

Where are specifications for base metal found?

A

ASTM (American Society for Testing and Materials)

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13
Q

An ER70S-X electrode would be used for which process?

A

GMAW

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14
Q

Which process would use continuous solid wire electrodes (E70S-X) for use in semi-automatic welding?

A

GMAW

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15
Q

An E70T-X electrode would be used in which welding process?

A

FCAW

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16
Q

The specification for a suitable FCAW filler material when joining ASTM A516 Gr. 55 is:

A

AWS A5.36

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17
Q

If a steel plate is 1-3/4” thick, what is the most common temperature needed to be preheated to before welding?

A

225 degrees F

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18
Q

The minimum preheat temperature for 1-1/4” thick A572 steel, Grade 60 is

A

150 degrees F

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19
Q

The minimum temperature for GMAW welding 2-1/2” thick A572 Grade 60 material is:

A

225 degrees F

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20
Q

The preheat and interpass temperature for ASTM A992 over 2-1/2”, using FCAW process should never be more than:

A

300 degrees F

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21
Q

The minimum preheat temperature for using an E7018 electrode to weld 1 inch thick ASTM A36 plate is:

A

150 degrees F

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22
Q

For ASTM A572 steel, Grade 42, the minimum required preheat for welding 2-1/2” thick steel with a prequalified procedure using the GMAW process is:

A

150 degrees F

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23
Q

What is the minimum temperature required on adjacent base material for ASTM A537, 1-3/4” thick when SMAW with low-hydrogen electrodes.

A

150 degrees F

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24
Q

What is the minimum preheat and interpass temperature for SMAW welding ASTM A572, Grade 60 structural steel 2” thick

A

225 degrees F

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25
Welding 1/2" thick ASTM A36 carbon steel without preheating must be done at a temperature of no less than:
32 degrees F
26
What is the minimum preheat and interpass temperature when using the SMAW process and an electrode other than low hydrogen on 1/2" structural steel?
32 degrees F
27
The maximum single pass fillet that may be welded in the overhead position when welding to a prequalified WPS requirement is:
5/16 inch
28
The minimum skewed T-joint angle allowed for welding a double-bevel groove weld is:
60 degrees
29
A skewed T-joint has a minimum allowed angle of:
60 degrees
30
A double-bevel-groove weld in a skewed T-joint must have a joint angle of at least:
60 degrees
31
What is the root face of a double-V-groove weld, with partial penetration, base metal thickness T1=1/2" minimum joint designation B-P3, angle 60 degrees, and root opening of 0 groove?
1/8"
32
What is the root opening for a double-U-groove partial penetration weld, base metal thickness T1=3/4" minimum, welding process SAW, joint designation B-P7-S?
+/- 0
33
What welding positions are allowed for a double-U-groove partial penetration weld, base metal thickness T1=3/4" minimum, welding process SAW, joint designation B-P7-S?
Flat
34
When the welding process is FCAW and GMAW, what is the joint designation for a double-U-groove partial penetration weld, base metal thickness T1=-3/4" minimum?
B-P-7-GF
35
What is the effective throat on a single-bevel groove, BTC-P4-GF joint, groove angle = 45 degrees, root face=1/8" minimum, root opening = 0, and allowed to be welded in overhead and vertical positions?
1/8"
36
For a PJP groove weld B-P1b, the root opening must be no more than:
1/4"
37
The fit-up angle on a single-V0groove with partial penetration is:
+10 degrees to -5 degrees
38
The base metal thickness T1 for SAW welding process on a double-V0groove weld, welded on a butt joint, with a partial joint penetration groove is:
3/4"
39
When the welding process is SAW on a double-U-groove with partial joint penetration, the joint designation B-P7-S, and base metal thickness T1=3/4" min., what welding positions are permitted?
Flat
40
if the joint designation is B-P7, what welding process is used?
SMAW
41
What type of metal transfer is not pre-qualified for use with a partial joint penetration groove, TCP8-GF joint type, a=45 degrees, f=1/8" min., r=3/8", R-), using GMAW
GMAW-S
42
In B-U6 joint designation, the 'U' is for:
unlimited thickness
43
The 'U' in TC-U9 is for:
unlimited thickness
44
What does a BTC-UC joint designation mean?
Butt joint, corner joint or T-joints, unlimited thickness
45
What does the 'B' mean in the joint designation BL1a?
Butt Joint
46
What does a TC-joint refer to?
T-Joint or Corner joint
47
The 'L' in the CL1a joint designation stands for:
Limited Thickness
48
The 'GF' in the TC-U9-a-GF joint designation stands for:
GMAW or FCAW
49
What is the correct root face for a single-J-groove in the overhead position to be shielded-metal-arc welded?
1/8"
50
What is the joint designation for a double-U-groove, with complete joint penetration, a root face of 1/8", a groove angle of 20 degrees, and a root opening of 1/8"?
BU-7
51
Welds need not exceed 3/8" according to which note?
Note J
52
The weld for a double-bevel-groove weld using a spacer is incomplete...
until the spacer is removed before welding the second side
53
What must be done before welding the second side of a single-V-groove corner-joint?
back gouge
54
What procedure must be followed on a complete joint penetration groove weld, R=0-1/8", f=0-1/8", a=60 degrees, joint designation B-U3b, allowed all welding positions, before the weld is considered to be complete?
back gouge
55
``` Joints without backing should have the roots gouged before welding the other side. This is found in the section: A: 2.9.2 B: 4.10.8 C: 3.3.4 D: None of the above ```
None of the above
56
The required root opening for a double-U-groove, with an angle of 45 degrees, welded in the vertical position is:
0-1/8"
57
When welded to a back-up strip in the flat position, a single-V-groove weld prepared to an included angle of 30 degrees must have a _______ root opening.
3/8"
58
In a vertical position, a double-J-groove weld is prepared with a radius of ______ and a 45-degree angle.
3/8"
59
To prepare the double-U-groove weld, the base metal is shaped to a:
1/4" radius
60
A double-groove eld with SAW shows a root opening of:
0
61
How would a 3/8" root opening for a double-bevel-groove weld be maintained?
by a 1/8" thick spacer
62
What is the required included angle of a single-V-groove with a backer, prepared with a 1/4" root opening, to be made in the flat position.
45 degrees
63
What is the root opening required for the angle of preparation of 20 degree for a C-U2a groove?
1/2"
64
A single-J-groove weld indicates a root face of:
0-1/8"
65
For a B-L2c-S weld with a 60-degree angle to be made in a flat position, the root opening is:
0
66
``` Of the following, which weld requires 0 root opening? A: double-J-groove B: double-bevel-groove C: double-U-groove D: All of the above ```
double-U-groove
67
For a double-J-groove weld, the base metal must be prepared to a _______ radius.
3/8"
68
A single-J-groove weld must have a root opening of:
0-1/8"
69
If a single-U-groove weld is to have a 1/4" radius and to be made in the horizontal position, then the prepared angle must be:
45 degrees
70
For a double-U-groove in the flat position, the angle of penetration must be at least:
20 degrees
71
For a double-V-groove weld with 1/8" x 3/8" spacer in overhead and flat positions, what is the included angle of preparation?
30 degrees
72
When may the root opening of a double-bevel-groove weld be 0-1/8"? A: if the lower plate is beveled 0-15 degrees and the root pass opposite is welded first B: only in the flat and overhead positions C: when the top plate is beveled 0-10 degrees D: All of the above
All of the above
73
The required root opening for a double-U-groove welded in the vertical position, with a 45-degree angle as fit-up, is:
3/16"
74
A square groove without backing requires a root opening of:
1/2 the thickness of the thinner plate
75
What is the angle of penetration for a single- | V-groove butt joint using 1/2" root opening, to be welded in the flat position?
20 degrees
76
What is the radius of a double-J-groove weld prepared with an angle of 45 degrees, in the vertical position?
3/8"
77
The required root face for a single-U-groove is:
1/8"
78
The required root opening for a square-groove weld using 1/4" material is:
1/8"
79
The included angle of preparation for a double-V-groove weld using a spacer, with a root opening of 1/2" is:
20 degrees
80
A single-U-groove should never have a root opening of more than:
1/8"
81
What should the root opening for a single-J-groove using the SAW process in the flat position be?
0
82
The root opening for a single-V-groove weld with a backing strip, a 45-degree angle, in the vertical position, is:
1/4"
83
What is the radius of a double-J-groove weld prepared with an angle of 45-degrees in the vertical position?
3/8"
84
What is the groove angle of a single-V-groove corner-joint if the root opening is 1/4"?
45-degrees
85
What is the groove radius for a SMAW welded double-J-groove, double V-groove, where the base metal thickness T1 is U and the joint designation is B-U9, and the root opening is 0-1/8"?
3/8"
86
What is the root face on a double-J groove welded with a groove radius of 3/8", a groove angle of 30-degrees, joint designation of B-U9-GF, and a root opening of 0-1/8"?
1/8"
87
What are the permitted welding positions for a SMAW welding process, groove angle 45-degrees, groove radius 1/4", root face 1/8", and root opening 0-1/8"?
Flat, Overhead, Vertical
88
What is the base metal thickness T1 for a SMAW welding process, groove angle 45-degrees, groove radius 1/4", root face 1/8", and root opening 0-1/8"?
Unlimited
89
What is/are the welding position(s) allowed for a SAW welding process, groove angle 30-degrees, groove radius 3/8", root face 1/8", and root opening 0-1/8"?
Flat
90
What figure holds the fit-up tolerance of groove welds?
Figure 5.1
91
The minimum angle for a full penetration T-joint is?
30-degrees
92
The base metal thickness on TC-U4B-S is:
Unlimited