Brainscape's Knowledge GenomeTM

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


See full index

Welding-3.1 > General > Flashcards

General Flashcards

1
Q

Slag inclusions may be present in

A

Mma welds

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

Main cause of undercut

A

Excessive amps

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

What Characteristic is typical for manual work

A

Constant current

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

Uk and Us it’s normal practice to measure what in welds

A

Leg lengths

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

Toes of all welds should be blended too?

A

Increase fatigue life

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

Silicon is added too steel and covering of electrodes too ?

A

Provide de oxidation

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

Low hydrogen electrode usually has a what covering

A

Basic

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

A high hydrogen electrode usually has what covering

A

Cellulosic

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

Fusible inserts in tig welding help what

A

Root pen

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

Typical welding angle for mma full pen

A

70°

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

Which test is used too measure toughness of the parent metal, Haz and the weld metal

A

Charley impact- v notch

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

Fillet fracture and Nick break are used for assessing

A

Weld quality

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

Mig/mag has a constant

A

Constant voltage

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

Fcaw

A

Constant voltage

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

Saw

A

<1000A flat
Constant Voltage
>1000A
Constant current

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

Tig has a

A

Dropping constant current

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

MMA

A

Dropping
Constant current

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

Mig/mag/fcaw as ctwd increases

A

Amperage decreases

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

Mig/mag/fcaw as ctwd decreases

A

Amperage increases

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

MMA/tig voltage reduces as arc

A

Decreases

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

MMA/tig voltage increases as arc

A

Increases

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

Non planar defects are

A

Inclusions or porosity

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

En 288

A

Procedure qualification

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

Z =

A

Through thickness ductility

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Yoke is a term in
M.p.i
26
Element too improve toughness
Manganese
27
111=
MMA
28
131=
TIG
29
141=
MIG
30
Throat thickness = multiply by
1.4
31
Leg length = multiply by
0.7
32
Where does the other side symbol go
Above the line
33
What is the upper critical temp of changing characteristics
723°
34
Heat input calculation is work out by
Voltage, current, travel speed, thermal efficiency
35
Residual stresses are the consequence of what
Material not yielding
36
Necking is
The point of failure
37
Transition range is
Temp it can take before it becomes brittle
38
Single sided but joints and root bead pen is mainly influenced by
Root gap
39
When Visually inspecting a weld what flaw is considered the most serious
Arc strikes
40
Burn through may occur if
Voltage is too high
41
Leg length multiply by
0.7
42
Throat thickness multiply by
1.4
43
The fusion boundary of a fillet weld is
Between the weld metal and the haz
44
Bs en 17637 allows magnification of
2 too 5x
45
Magnetic forces affecting the arc is known as
Arc blow
46
An example of a classified electrode is E 38 3 R
47
Max Weave width may be applied too a wps standard for
A reduction in haz toughness
48
Lamellar tearing is a crack type that occurs
In the parent material due too welding strains acting in a short transverse direction
49
Gas 20% carbon and 80% argon is a
Mechanised mag process
50
When welding thin plate - distortion can be minimised by
Back step welding
51
What is a penetrameter used for
Quality of radiographic technique
52
Typical temp for normalising
723°
53
STRA test determine
Through thickness ductility
54
Non magnetic steel example
18%Cr 8%Ni
55
When arc lenght is shortened in mma the voltage
Decreases
56
What process is suitable too welding over 25 MM
Spray transfer
57
Crater pipe is a
Shrinkage defect
58
A tensile test result of 24% elongation this is a measure of
Ductility
59
A bend test is done too determine
Freedom from defects
60
The use of pre heat in CMn steels is too primarily too
Delay the cooling rate
61
Lowest level of hydrogen process is
Tig
62
Solidification cracking happens when
Weld metal has a high carbon or impurity (sulphur)
63
Where do hydrogen induced cracks normally form
Through the haz
64
Where do solidification cracks normally take place
Through the centre of the weld metal
65
Apply pwht too reduce
Residual stresses and eliminate susceptible microstructures
66
Basic electrode deposits how much weld metal
5ml per 100g
67
Rutile electrodes deposit how much weld metal
25/30ml per 100g
68
Cellulosic electrode deposit how much weld metal
80/90ml per 100g

Welding-3.1 (4 decks)

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