Red Seal 3 Flashcards
1
Q
Hole with a cone shaped opening or recess at the outer surface
A
Counter sunk hole
2
Q
Separation of elements compressing the base metal
A
Segregation
3
Q
Testing of weld defects and strength requirements using x-rays
A
Radiographic examination
4
Q
Enlarging and improving the surface quality of a hole
A
Reaming
5
Q
Fitting consisting of three parts having threads and flanges, which draw together when tightening
A
Union
6
Q
Joining together of dissimilar metals by capillary action
A
Adhesion
7
Q
Hole with a cone shaped opening below the outer surface
A
Counter drilled hole
8
Q
The geometry of the joint and the dimension of the welded joint
A
Joint design
9
Q
The length of unmelted electrode, extending beyond the end of the contract tube
A
Electrode extension
10
Q
Ratio of the maximum load to the original cross-sectional area
A
Tensile strength
11
Q
A part of a surface where change occurs
A
Surface feature
12
Q
Part of the joint member which is in full contact prior to Welding
A
Faying surface
13
Q
Property of a metal to resist various kinds of rapidly alternating stresses
A
Fatigue strength
14
Q
Intersection of the base metal and the weld face
A
Weld toe
15
Q
Electricity in motion in an electric current
A
Dynamic electricity
16
Q
A potential charge of electricity at rest such as a battery or other storage device
A
Electrostatic
17
Q
Effective holding length of a rivet
A
Grip
18
Q
Load that remains constant
A
Static load
19
Q
Electricity at rest
A
Static electricity
20
Q
Screw thread series, of coarse (UNC/UNFC) fine (UNF/UNRF) and extra fine (UNEF/UNREF) graded pit pinches, and eight series with constant pitch
A
Standard series
21
Q
Electrically non-conducting
A
Dielectric
22
Q
Distance from the fusion phase to the weld interface
A
Depth of fusion
23
Q
The ratio of the weight of filler metal deposited in the weld medal to the weight of the filler metal melted, expressed as a percentage
A
Deposition efficiency
24
Q
Process of hardening, low carbon steel by heating it in sodium cyanide or potassium cyanide
A
Cyaniding
25
Ability of a metal to resist failure when subjected to very low temperatures
Cryogenic properties
26
The weight of material deposited in a unit of time
Deposition rate
27
When preparing test coupons for an ASME sectionIX Welder qualification what is the maximum that the edges of each coupon may be radiused
1/8“ (3.2mm)
28
Any material through which electricity flows easily
Conductor
29
A mould formed around the workpiece to contain and shape the weld metal
Thermite mold
30
Unit of measure for electricity that expresses the quantity or number of electrons flowing through a conductor per unit of time
Ampere (amp or A)
31
Maximum stress and material can withstand without permanent deformation
Proportional limit
32
Correctly installed cable clips will reduce the breaking strength of a wire rope by? What percentage
20%
33
What has the best insulating properties?
Poly propylene
34
A part of the completely mechanized welding equipment set up that incorporates the gun or the torch, the wire feeder and the wire spool
Welding head
35
801T-11 is welded with
DCEN
36
What reduction in ability and increase in corrosion resistance
4043
37
NASME what is used to identify weld metal chemical composition?
A Numbers
38
Wire liners used for steel wire are made of
Hardening steel
39
mild steel gun angle would be what with GMAW
5° to 15°
40
To correct undercut during spray transfer you would what
Increase current
41
A joint where the design does not require the weld throat to equal the workpiece thickness
Partial penetration joint
42
Process of building war surfaces by depositing several layers of beads
Padding
43
3/16 or less structural steel used to cover large expenses of a structure
Sheet
44
The opposition to an alternating current caused by inductance and capacitance
Reactance
45
Properties that describe the behaviour of metals under applied loads
Mechanical properties
46
Distance from the edge of a plate to the centre line of the nearest row of rivets
Margin
47
Electrode whose deposits are soft and ductile enough that they can easily be machine after Welding
Machinable electrode
48
Weld type made in the cross-section no shaped of a hole in one of the joint members
Plug weld
49
BS=WLL x (design factor)
Breaking strength
50
WLL= WLLxH/Lx2
Working load limit
51
The deposition rate for FCAW can be as high as
25 pounds(12klo) per hour
52
High pressure CO2 cylinders are what pressure and a full cylinder pressure is approximately what PSI
High
835 PSI
53
Cylinder valves on high-pressure cylinders are designed to deliver only what
1800 psi
54
At flow rates greater than 12 L/min CO2 flow metres may what
Freeze
55
What are three types of welding guns
Bernard
Tweeko
Tragaskis
56
What code of standard covers the construction of pressure valves?
ASME section VIII
57
What is defined as the voltage drop per 100 A of current rise
Slope
58
What slows down the rate of current rise
Inductance
59
CC machines are used for gas metal arc welding of what type of metal
Aluminum
60
Extending weld metal beyond the weld toe of weld root
Overlapping
61
Thermal, electrical,optical, magnetic, and general properties of metal
Physical properties
62
Most regulators for flow metres deliver a constant pressure to the flow metre of what psi
50 psi
63
FCAW has a deposit deposition efficiency of what percent
82% – 92%
64
Combination of weld and oxygen into metal oxides
Oxidation
65
Distance between joint members at the root of the world before Welding
Root opening
66
Distance between joint members at the root of the world before Welding
Root opening
67
Metal formed by a mechanical or hydraulic press with or without heat
Forged
68
An ark that is struck between the electrode of a plasma arc torch, and the work piece
Transferred arc
69
The force applied to the electrodes in resistance welding are
Electrode force
70
What adjusts the current output at short circuit levels
Slope control
71
What would be the appropriate temperature range of a rod oven for proper storage of low hydrogen electrodes
30°C – 140°C(85°F – 250°f) above ambient temperature
72
What are important when CO2 shielding gas is used?
Deoxidizers
73
ER 480S –6
Silicone and manganese
Low spatter
74
A tool, capable, or used for long continuous lifts
Grip hoist
75
Supplementary symbol indicated by a triangular flag rising from the intersection of the arrow and reference line which specifies the Welding operation is to be completed in the field at the location of final installation
Field weld symbol
76
What is done to restore a grinding wheel that has become glazed or loaded with foreign particles?
Dressing
77
True or false
All assembly prints are used as detailed prints when completed dimensions are applied to all of the assembled parts
False
78
True or false
In certain cases, cutting and bending members to create joints for structural shapes, maybe more economical even through Moore cutting and Welding are required
False
79
Three types of weld transfers are
Short circuit
Globular
Spray
80
If the shielding gas is interrupted it can cause what in the weld
Porosity and contamination
81
GMAW can weld all metals but those that cannot______
Be drawn into a wire
82
High current density produces what
Deeper penetration
83
GMAW has a deposition efficiency of what percent
90% – 98%
84
GMAW polarity is
DCEP
85
Solid wires, runoff, of which polarity
DCEP
86
Well, type in which well beads are deposited on a surface to increase the dimensions of the part or to add special properties to the weld part
Surfacing weld
87
What drawings facilitate the preparation of bills of material?
Subassembly
88
The flare what joints are used in weldment of heavier gauge materials where one or two of the members have
Bevel
89
If the backing material is to be removed following the completion of the groove weld, what notion is used?
R
90
Well type made in the cross-sectional shape of a slot(elongated hole) in one of the joint members
Slot weld
91
Ability of a weld to resist loads that are applied suddenly and often at high velocity
Impact strength
92
What is the rigging signal used to lift a load vertically?
Finger pointed upwards with a circular turning motion
93
Amount of heat required to melt a given amount of metal
Melting point
94
Electrical requirements for operating a welding machine
Input
95
A gas that does not participate in any chemical reaction at all
Inert gas
96
A weld discontinuity formed when the weld metal does not completely fuse with the substrate(base metal or previous well bead)
Incomplete fusion
97
An oxy fuel flame with an excess of oxygen
Oxidizing flame
98
Application of heat to the weld part after welding to facilitate a controlled cooling rate
POST heating
99
Round or oblong discontinuities in a wild metal formed as a result of entrapment of gas during weld metal solidification
Porosity
100
3/16 or more thick structural steel used to cover large expansions of a structure
Plate
101
Distance between corresponding points on adjacent thread forms
Pitch
102
Surface of the weld on the opposite side of the joint on which Welding was done
Root surface
103
Filler metal that expands above the surface of the joint on the opposite side of the joint on which Welding was done
Root reinforcement
104
Initial weld pass that provides complete penetration through the thickness of the joint member
Root pass
105
Load that is applied suddenly or intermittently
Impact load
106
2G
Horizontal position
107
Maximum amp and voltage of a welding machine
Output
108
The gas in the plasma arc welding torch that gets ionized in the arc to form art plasma, and comes out of the constricting orifice of nozzle as a plasma jet is what gas
Orifice gas
109
External force supplied to an elastic body that causes stress in a material
Load
110
Method used to achieve the surface finish
Weld finish
111
The total opposition of an alternating current presented by a circuit(the algebraic sum of resistance, Capas tense and inductance)
Impendence
112
Voltage developed across a component by the flow of current through the resistance or impedance of the component
Voltage drop
113
Angle that contains 90°
Right angle
114
Welding machine that produces AC only
Transformer
115
Steel with a carbon range of 0.05% to 0.30%
Low carbon steel
116
Impurity or foreign substance forged into a molten puddle during the welding process
Inclusion
117
With a CV power source increase arc length will
Decrease burn off rate
118
What is the most common type of non-destructive testing?
Visual inspection
119
Load voltage is reading on a what
Volt metre
120
What would the abbreviation RFSO mean on a material list?
Raised face slip on
121
Which component of a welding machine changes AC current to DC current
Rectifier
122
What is the best way to determine the composition of a metal so that it can be welded?
Determining the composition of a metal for welding purposes is crucial for ensuring compatibility and achieving optimal weld quality. Here are the best methods to determine the composition of a metal:
1. Chemical Analysis:
- Spectroscopy: Techniques such as Optical Emission Spectroscopy (OES) or X-ray Fluorescence (XRF) can provide detailed information about the elemental composition of a metal. OES is particularly useful for metals and alloys, while XRF can be used for a variety of materials.
- Wet Chemistry: Laboratory methods involving chemical reactions to determine the concentration of specific elements can be used, though they are less common for initial assessments.
2. Mechanical Testing:
- While mechanical tests (like tensile tests or hardness tests) won't give you direct composition information, they can provide insights into the metal's properties and guide you toward the appropriate composition standards for welding.
3. Visual Inspection and Identification:
- Magnetic Properties: Some metals are ferromagnetic, while others are non-magnetic. This can provide initial clues about the type of metal.
- Color and Surface Finish: Certain metals have distinctive colors or finishes that can help in identification (e.g., copper has a reddish color).
4. Welding Procedure Specifications (WPS):
- Refer to established welding procedure specifications that outline the compatible materials and filler metals for welding specific alloys. These documents often provide guidance based on common compositions.
5. Material Certification:
- If available, refer to material certificates (like mill test reports) that accompany metal purchases. These documents typically provide detailed chemical composition and mechanical properties.
6. Portable Analyzers:
- Handheld XRF analyzers or other portable spectrometers can be used on-site to quickly determine the composition of metals without needing to send samples to a lab.
7. Consulting Standards:
- Reference industry standards (like ASTM, ISO, or AWS) that specify the composition and mechanical properties of metals used in welding applications. This can help in identifying suitable materials.
8. Professional Assistance:
- If in doubt, consulting a metallurgist or materials engineer can provide insights into the composition and suitability of metals for welding.
Once the composition is determined, it’s essential to select the appropriate welding method and filler material that match the metal's properties to achieve a successful weld.
123
What type of material has a grain structure that appears very coarse and silvery
White cast iron
124
Which metal is more likely to crack due to well joint shrinkage
Cast iron
125
Which type of drawing would show all these sides equally and uses horizontal plane lines at 30°
Isometric
126
What does 3F designate on a Welding specification sheet?
Vertical fillet weld position
