wire designated by CSA standard W48 as an E491T-9MJ-H8 - ANSWER Results in
CWB 2 VISUAL WELD INSPECTOR EXAM weld deposit with a maximum of 8 ml diffusible hydrogen per 100 g of weld metal
Self shield flux cored wires are - ANSWER better able to tolerate air currents
A consumable electrode is: - ANSWER AN electrode which melts and provides
metal to fill the joint
The AWS classes metal cored wire along with - ANSWER solid wires
The weld heat affected zone is: - ANSWER the portion of the base metal adjacent to
SAW Fluxes that significantly influence the composition of the weld metal through
the weld metal whose properties have been changed due to the heat of welding
slag/metal reactions are called - ANSWER active
When an arc is formed between two electrodes - ANSWER electricity flows from
Resistance welding of aluminum - ANSWER Can be done but with greater difficulty
negative cathode to positive anode
due to its low resistivity
The magnetic pinch force helps in the process of the detaching the molten metal
The plasma arc welding process is similar to what other welding process in principles
drops from the electrode tip. The magnetic force - ANSWER increases as the
of operation - ANSWER GTAW
square of the current causing smaller and smaller droplets to be detached
For a flat weld profile and good penetration profile using the MCAW process -
The electric current for welding must be transformed from - ANSWER High voltage,
ANSWER 15 degree travel angle using push technique should be used
low amperage to low voltage, high amperage
What is the effect of tip to work distance (electrical sickout on deposition rate of
The major advantage of electron beam welding process is - ANSWER full
submerged are welding - ANSWER decreasing tip to work distance without
penetration welds on thick material in one pass
adjusting any other variable will cause a increase in deposition rate
The progress of welding with Electroslag welding process is - ANSWER Vertical up
Electrode stick out is measured - ANSWER From tip of nozzle to end of electrode
Explosion welding - ANSWER is solid state process in which coalescence is
Contact tip-to-work is the sum (CTTW) - ANSWER of the electrode extension and
produced through high speed impacting of two or more materials by controlled
arc length
detonation
Increasing electrical sickout - ANSWER decreases voltage, decreases current and
A typical application for thermite welding is - ANSWER joining of rails
increases resistance
Welding without filler metal with GTAW process is referred to as - ANSWER
Which welding process for GMAW has large weld pool and is rather large and
autogenous welding
difficult to control out of position - ANSWER Spray transfer
A typical weld flaw associated with GTAW process is - ANSWER porosity
Which welding process for GMAW has excessive spatter - ANSWER Globular
transfer
SMAW power sources typically have a volt-ampere curve that is - ANSWER
drooping
Which welding process for GMAW usually has lack of fusion - ANSWER Short
Circuit
Once a box of E49XX low hydrogen electrodes has been opened the electrodes may
remain at ambient temperature for up to a maximum of - ANSWER 4 hours
what electrodes never go in holding or baking oven - ANSWER cellulosic
Shielded Metal ARC Welding (SMAW) process - ANSWER establishes an arc
Submerged Arc Welding disadvantage - ANSWER Requires inter-pass and post
between the end of a covered electrode and the work piece.
weld slag removal
The spray mode of metal transfer is achieved with - ANSWER high amperage, high
What welding process has the greatest HAZ - ANSWER Electroslag
voltage and argon-rich shielding gas
GTAW when a BALL is formed on Tungsten - ANSWER Aluminum
digital wire feeders - ANSWER have feedback systems to maintain the preset wire
feed speed
,Which welding process can be done outside Earth's atmosphere - ANSWER
Diffusion Welding is process a joining process that by definition requires application of -
ANSWER Either heat or pressure
With tungsten arc, most of the current across the arc is carried by - ANSWER
electrons Name the two main methods of arc shielding - ANSWER flux shielding and gas
shielding
Electrode beam welding has - ANSWER a very narrow weld and heat affected zone
Which direction do the electrons flow in an electrical are - ANSWER Cathode to
Which gases are used with the GMAW process - ANSWER argon and CO2 and anode
their mixtures in various proportions
In are welding, the electric are is intensely hot with temperature exceeding -
Which welding process is non-consumable electrode process - ANSWER GTAW ANSWER 30,000 C
Which shielding gas does GMAW use for spray transfer - ANSWER 95% Argon and How does the arc voltage and arc stiffness change when the arc length is increased
5% CO2 - ANSWER Arc voltage increases and arc stiffness decreases
The deposition rate of SMAW electrodes is increased by including - ANSWER Iron What type of penetration and weld width can be expected when using DC positive
Power (GTAW) - ANSWER Shallow penetration and a wide weld
Electrode in Flux cored are welding is - ANSWER Tubular wire containing flux or Which polarity is chosen most often for direct current GTAW welding of steels and
other ingredients why - ANSWER Direct current electrode negative. More heat is produced at the
work piece leading to deeper weld penetration
What welding process is not used in overhead position - ANSWER SAW
(Submerged Arc Welding Why must shielding gas for GTAW be completely inert - ANSWER Presence of
active gases like oxygen and carbon dioxide the tungsten electrode and the limit its
SAW Fluxes that significantly influence the composition of the weld metal through life.
slag/metal reactions are called - ANSWER are classified in conjunction with welding
wire forming a flux designation Two advantages of GTAW process - ANSWER It gives high quality deposits, and
the process can be used to weld virtually all metals and alloys
A welding arc consists of a - ANSWER high current and low voltage
Why is SMAW a very commonly used welding process - ANSWER It provides great
The heat of the welding arc is used to - ANSWER locally melt the base material and flexibility in terms of the broad range of materials and their thicknesses that can be
filler material to create fusion upon solidification joined in all welding positions
Welding using GTAW process with current set to DCEN - ANSWER 30% arc heat at SMAW uses constant current or constant voltage - ANSWER constant current
the electrode and 70% arc heat at the work
Why is care necessary in the proper storage and handling of electrodes for welding
The function of the ingredients in the electrode coating of SMAW electrodes is to - steels - ANSWER Improperly stored electrodes can pick up moisture leading to
ANSWER provide a gas shield, slag covering, scavengers, arc stabilization and increased weld metal hydrogen content and therefore increased risk of cold cracking
additional alloying elements in the weld zone
The temperature for holding low hydrogen electrodes - ANSWER 120 C GMAW uses Constant Voltage or Constant Current - ANSWER Constant Voltage
The GMAW process uses (Blank) to shield the molten weld from the atmosphere - Which metal transfer would be applied to Cast Iron - ANSWER GMAW: Short
ANSWER external shielding gas Circuiting
The flux cored arc welding is an arc welding process usually in the semi-automatic Which metal transfer would be applied to aluminum alloy - ANSWER GMAW: Spray
mode, consisting of: - ANSWER A constant current power supply, a continuous
speed wire feeder, a welding gun, and a continuous filler metal electrode with a Between 100% CO2 and 95% Ar-5% CO2, which shielding gas will you chose to
hallow core containing flux and other ingredients spray in semi-automatic welding of carbon steel - ANSWER 95% Ar - 5% CO2
, What process will most likely have excessive spatter (GMAW) - ANSWER Globular
Most common gas used with gas shielded flux cored are welding is - ANSWER 75%
Ar - 25% CO2 What welding process has the largest HAZ - ANSWER Electroslag
The type of cored wire most suitable for air field work is - ANSWER Self-shielded GMAW - transfer lowest amperage - ANSWER Short Circuit
flux core are wire
Energy Input = (Volt x Amp x 60) / (Speed inches per minutes x 1000) - ANSWER
Gas shielded flux core wires with basic ingredients are - ANSWER not suited for kj/mm
welding out of position welds
what electrodes never go in holding or baking oven - ANSWER cellulosic
The technique used for semi-automatic welding with gas shielded flux cored arc
welding - ANSWER drag (backhand) Submerged Arc Welding disadvantage - ANSWER Requires inter-pass and post
weld slag removal
In submerged arc welding process, granular flux is placed on the unwelded seam
(Blank) of the consumable electrode - ANSWER ahead Process that removes impurities and unwanted gases (hydrogen and oxygen) -
ANSWER Vacuum degassing
What is the effect of change polarity from DCEP to DCEN on a submerged arc
welding weld deposit - ANSWER The deposition rate will increase, however, the Today most mild steel electrodes have a wire core composed of - ANSWER Fully
penetration is reduced and the risk of lack of fusion type of flaws in groove welds is killed steels
increased
In medium coated electrodes, the percentage of the electrode weight derived from
State the greatest advantage and disadvantage of the submerged arc welding the coating - ANSWER 20% to 35%
process - ANSWER Greatest advantage is very high productivity possible due to
high duty cycle (mechanized process) and the high deposition rate (multiple wires The main function of slag is to - ANSWER "1) Protecting the weld metal from
and high currents). The main disadvantage is that the process is not suitable for out contamination
of position welding
2) Reducing the amount of oxygen and other impurities in the weld - ANSWER
Fused Fluxes are not prone to moisture pick up - ANSWER
3) Controlling the bead shape and smoothness " - ANSWER
What are the effects of increasing the arc voltage using an active flux submerged are
welding of carbon steels - ANSWER Increase in arc voltage increases the flux An electrode that is to be used with DC electrode positive current only - ANSWER
consumption and in the case of active fluxes, the Mn and Si, content of the weld E4910
metal is increased. As a result, such fluxes should be used with caution for multi-
pass welds since there is a potential for build up of Mn and Si in the weld metal, The addition of cellulose to an electrode coating will - ANSWER improve the weld's
thereby decreasing the weld metal ductility and increasing the risk of hydrogen ductility
The source of heat in the resistance of welding process - ANSWER electrical "The impact toughness of the weld deposit required for the - ANSWER
resistance of the work pieces
B-G 49A 3C G6 (ER49S-6) " - ANSWER 27 J at 0 C
Which welding process use non consumable electrode type - ANSWER GTAW,
PAW What are the major category of gas shielded tubular electrodes - ANSWER "1)
Rutile types
The electron beam welding process results in - ANSWER Narrow, deep-penetrating
welds and heat affected zones 2) Basic types - ANSWER
In thermite welding, the reaction from which required heat and molten metal is 3) Metal cored types " - ANSWER
obtained is called - ANSWER exothermic
Generally, as the percentage of carbon dixoide in an argon gas mixture dercreases,
What Process will most likely have lack of Fusion (GMAW) - ANSWER Short Circuit the final weld deposit will have - ANSWER Increased strength properties due to a
higher manganese and silicone content
CWB 2 VISUAL WELD INSPECTOR EXAM weld deposit with a maximum of 8 ml diffusible hydrogen per 100 g of weld metal
Self shield flux cored wires are - ANSWER better able to tolerate air currents
A consumable electrode is: - ANSWER AN electrode which melts and provides
metal to fill the joint
The AWS classes metal cored wire along with - ANSWER solid wires
The weld heat affected zone is: - ANSWER the portion of the base metal adjacent to
SAW Fluxes that significantly influence the composition of the weld metal through
the weld metal whose properties have been changed due to the heat of welding
slag/metal reactions are called - ANSWER active
When an arc is formed between two electrodes - ANSWER electricity flows from
Resistance welding of aluminum - ANSWER Can be done but with greater difficulty
negative cathode to positive anode
due to its low resistivity
The magnetic pinch force helps in the process of the detaching the molten metal
The plasma arc welding process is similar to what other welding process in principles
drops from the electrode tip. The magnetic force - ANSWER increases as the
of operation - ANSWER GTAW
square of the current causing smaller and smaller droplets to be detached
For a flat weld profile and good penetration profile using the MCAW process -
The electric current for welding must be transformed from - ANSWER High voltage,
ANSWER 15 degree travel angle using push technique should be used
low amperage to low voltage, high amperage
What is the effect of tip to work distance (electrical sickout on deposition rate of
The major advantage of electron beam welding process is - ANSWER full
submerged are welding - ANSWER decreasing tip to work distance without
penetration welds on thick material in one pass
adjusting any other variable will cause a increase in deposition rate
The progress of welding with Electroslag welding process is - ANSWER Vertical up
Electrode stick out is measured - ANSWER From tip of nozzle to end of electrode
Explosion welding - ANSWER is solid state process in which coalescence is
Contact tip-to-work is the sum (CTTW) - ANSWER of the electrode extension and
produced through high speed impacting of two or more materials by controlled
arc length
detonation
Increasing electrical sickout - ANSWER decreases voltage, decreases current and
A typical application for thermite welding is - ANSWER joining of rails
increases resistance
Welding without filler metal with GTAW process is referred to as - ANSWER
Which welding process for GMAW has large weld pool and is rather large and
autogenous welding
difficult to control out of position - ANSWER Spray transfer
A typical weld flaw associated with GTAW process is - ANSWER porosity
Which welding process for GMAW has excessive spatter - ANSWER Globular
transfer
SMAW power sources typically have a volt-ampere curve that is - ANSWER
drooping
Which welding process for GMAW usually has lack of fusion - ANSWER Short
Circuit
Once a box of E49XX low hydrogen electrodes has been opened the electrodes may
remain at ambient temperature for up to a maximum of - ANSWER 4 hours
what electrodes never go in holding or baking oven - ANSWER cellulosic
Shielded Metal ARC Welding (SMAW) process - ANSWER establishes an arc
Submerged Arc Welding disadvantage - ANSWER Requires inter-pass and post
between the end of a covered electrode and the work piece.
weld slag removal
The spray mode of metal transfer is achieved with - ANSWER high amperage, high
What welding process has the greatest HAZ - ANSWER Electroslag
voltage and argon-rich shielding gas
GTAW when a BALL is formed on Tungsten - ANSWER Aluminum
digital wire feeders - ANSWER have feedback systems to maintain the preset wire
feed speed
,Which welding process can be done outside Earth's atmosphere - ANSWER
Diffusion Welding is process a joining process that by definition requires application of -
ANSWER Either heat or pressure
With tungsten arc, most of the current across the arc is carried by - ANSWER
electrons Name the two main methods of arc shielding - ANSWER flux shielding and gas
shielding
Electrode beam welding has - ANSWER a very narrow weld and heat affected zone
Which direction do the electrons flow in an electrical are - ANSWER Cathode to
Which gases are used with the GMAW process - ANSWER argon and CO2 and anode
their mixtures in various proportions
In are welding, the electric are is intensely hot with temperature exceeding -
Which welding process is non-consumable electrode process - ANSWER GTAW ANSWER 30,000 C
Which shielding gas does GMAW use for spray transfer - ANSWER 95% Argon and How does the arc voltage and arc stiffness change when the arc length is increased
5% CO2 - ANSWER Arc voltage increases and arc stiffness decreases
The deposition rate of SMAW electrodes is increased by including - ANSWER Iron What type of penetration and weld width can be expected when using DC positive
Power (GTAW) - ANSWER Shallow penetration and a wide weld
Electrode in Flux cored are welding is - ANSWER Tubular wire containing flux or Which polarity is chosen most often for direct current GTAW welding of steels and
other ingredients why - ANSWER Direct current electrode negative. More heat is produced at the
work piece leading to deeper weld penetration
What welding process is not used in overhead position - ANSWER SAW
(Submerged Arc Welding Why must shielding gas for GTAW be completely inert - ANSWER Presence of
active gases like oxygen and carbon dioxide the tungsten electrode and the limit its
SAW Fluxes that significantly influence the composition of the weld metal through life.
slag/metal reactions are called - ANSWER are classified in conjunction with welding
wire forming a flux designation Two advantages of GTAW process - ANSWER It gives high quality deposits, and
the process can be used to weld virtually all metals and alloys
A welding arc consists of a - ANSWER high current and low voltage
Why is SMAW a very commonly used welding process - ANSWER It provides great
The heat of the welding arc is used to - ANSWER locally melt the base material and flexibility in terms of the broad range of materials and their thicknesses that can be
filler material to create fusion upon solidification joined in all welding positions
Welding using GTAW process with current set to DCEN - ANSWER 30% arc heat at SMAW uses constant current or constant voltage - ANSWER constant current
the electrode and 70% arc heat at the work
Why is care necessary in the proper storage and handling of electrodes for welding
The function of the ingredients in the electrode coating of SMAW electrodes is to - steels - ANSWER Improperly stored electrodes can pick up moisture leading to
ANSWER provide a gas shield, slag covering, scavengers, arc stabilization and increased weld metal hydrogen content and therefore increased risk of cold cracking
additional alloying elements in the weld zone
The temperature for holding low hydrogen electrodes - ANSWER 120 C GMAW uses Constant Voltage or Constant Current - ANSWER Constant Voltage
The GMAW process uses (Blank) to shield the molten weld from the atmosphere - Which metal transfer would be applied to Cast Iron - ANSWER GMAW: Short
ANSWER external shielding gas Circuiting
The flux cored arc welding is an arc welding process usually in the semi-automatic Which metal transfer would be applied to aluminum alloy - ANSWER GMAW: Spray
mode, consisting of: - ANSWER A constant current power supply, a continuous
speed wire feeder, a welding gun, and a continuous filler metal electrode with a Between 100% CO2 and 95% Ar-5% CO2, which shielding gas will you chose to
hallow core containing flux and other ingredients spray in semi-automatic welding of carbon steel - ANSWER 95% Ar - 5% CO2
, What process will most likely have excessive spatter (GMAW) - ANSWER Globular
Most common gas used with gas shielded flux cored are welding is - ANSWER 75%
Ar - 25% CO2 What welding process has the largest HAZ - ANSWER Electroslag
The type of cored wire most suitable for air field work is - ANSWER Self-shielded GMAW - transfer lowest amperage - ANSWER Short Circuit
flux core are wire
Energy Input = (Volt x Amp x 60) / (Speed inches per minutes x 1000) - ANSWER
Gas shielded flux core wires with basic ingredients are - ANSWER not suited for kj/mm
welding out of position welds
what electrodes never go in holding or baking oven - ANSWER cellulosic
The technique used for semi-automatic welding with gas shielded flux cored arc
welding - ANSWER drag (backhand) Submerged Arc Welding disadvantage - ANSWER Requires inter-pass and post
weld slag removal
In submerged arc welding process, granular flux is placed on the unwelded seam
(Blank) of the consumable electrode - ANSWER ahead Process that removes impurities and unwanted gases (hydrogen and oxygen) -
ANSWER Vacuum degassing
What is the effect of change polarity from DCEP to DCEN on a submerged arc
welding weld deposit - ANSWER The deposition rate will increase, however, the Today most mild steel electrodes have a wire core composed of - ANSWER Fully
penetration is reduced and the risk of lack of fusion type of flaws in groove welds is killed steels
increased
In medium coated electrodes, the percentage of the electrode weight derived from
State the greatest advantage and disadvantage of the submerged arc welding the coating - ANSWER 20% to 35%
process - ANSWER Greatest advantage is very high productivity possible due to
high duty cycle (mechanized process) and the high deposition rate (multiple wires The main function of slag is to - ANSWER "1) Protecting the weld metal from
and high currents). The main disadvantage is that the process is not suitable for out contamination
of position welding
2) Reducing the amount of oxygen and other impurities in the weld - ANSWER
Fused Fluxes are not prone to moisture pick up - ANSWER
3) Controlling the bead shape and smoothness " - ANSWER
What are the effects of increasing the arc voltage using an active flux submerged are
welding of carbon steels - ANSWER Increase in arc voltage increases the flux An electrode that is to be used with DC electrode positive current only - ANSWER
consumption and in the case of active fluxes, the Mn and Si, content of the weld E4910
metal is increased. As a result, such fluxes should be used with caution for multi-
pass welds since there is a potential for build up of Mn and Si in the weld metal, The addition of cellulose to an electrode coating will - ANSWER improve the weld's
thereby decreasing the weld metal ductility and increasing the risk of hydrogen ductility
The source of heat in the resistance of welding process - ANSWER electrical "The impact toughness of the weld deposit required for the - ANSWER
resistance of the work pieces
B-G 49A 3C G6 (ER49S-6) " - ANSWER 27 J at 0 C
Which welding process use non consumable electrode type - ANSWER GTAW,
PAW What are the major category of gas shielded tubular electrodes - ANSWER "1)
Rutile types
The electron beam welding process results in - ANSWER Narrow, deep-penetrating
welds and heat affected zones 2) Basic types - ANSWER
In thermite welding, the reaction from which required heat and molten metal is 3) Metal cored types " - ANSWER
obtained is called - ANSWER exothermic
Generally, as the percentage of carbon dixoide in an argon gas mixture dercreases,
What Process will most likely have lack of Fusion (GMAW) - ANSWER Short Circuit the final weld deposit will have - ANSWER Increased strength properties due to a
higher manganese and silicone content
