What is correct WFS is determined by
Electrode diameter
Mode of transfer
Base metal thickness
What is the distance from the end of the electrode to the weld pool called?
Arc length
What factors determine the shielding gas to use for GMAW-P
Type of base metal and electrode used
Shielding gas for GTAW most often is?
100% argon
Welding clothing should be made of
wool or cotton
The fourth state of matter is
Plasma
What are good ways to clean aluminum before welding?
Acetone
Stainless steel brush
Milling
Which item is a required part of a weld symbol include:
The Arrow
The Tail
The All around symbol
The Arrow
What happens when travel speed is to fast?
Long "V"-shaped bead
Poor fusion
Ropy bead
What does CWI stand for?
Certified Welding Inspector
What power supply does GMAW use?
Constant Voltage
CV
In SMAW, What does the coating on electrodes provide?
Arc stabilization
slow cooling of the weld
helps influence the bead shape
PPE is very important to a welder for reasons such as
Protection of extremities
hearing protection
eye protection
burn protection
Terms used to evaluate OXY cuts include
Kerf
Drag lines
Dross
Pure aluminum melts at approx. ____ degrees Fahrenheit.
1250
Welding symbols are always read:
Left to Right
What does a forehand or a push travel angle results in?
Less penetration
What are the four different GMAW processes?
Short circuit
globular
spray arc
GMAW-p
GMAW normally uses what type of polarity?
DCEP
What power supply does GTAW and SMAW use?
Constant Current
CC
what are components required for a material to burn?
fuel
oxygen
heat
In PAC, the ____ is often made of copper with an imbedded tungsten or hafnium tip.
electrode
Which alloy is the most common for a filler rod or wire?
4043
What information that might be indicated in the tail includes:
Process
Notes
Specifications
How does an increase in WFS affect the amperage?
increase in amperage
A properly shaped and sized ________ will melt both root faces and ensure adequate root fusion.
Key hole
Which type of drive rollers does FCAW most often utilizes
knurled drive rollers
Why would a welder store welding electrodes in an oven?
To prevent moisture absorption
Bend test specimens must have grind marks ________ the specimen.
Running down the length of
Which torch variation setup incorporates the use of a drag shield?
shielded
Pushing aluminum through a die to form various shapes is called what?
extruding
What does Pitch indicate?
Center to center between welds
What variables can the welder control during GMAW welding?
Stick-out
Travel angles
Work angles
This type of weld is a permanent weld used to fit up and hold the weld joint in place for welding.
Tack weld
What factors should be considered when selecting of an electrode for FCAW?
Welding position
Shielding gas
Base metal thickness
If the end of the filler rod is removed from the gas protection, ____.
it will oxidize
A fillet weld made in the horizontal position is identified as the ________ position.
2F
Which cutting process is the least expensive?
OXY
The major alloying element in an aluminum alloy is indicated by the _____ digit in the number designation.
first
If there is no length or pitch given for a fillet weld the weld length is:
Continuous
Which weld technique produces a more convex weld bead with deeper penetration?
Backhand or drag
A welding procedure specification (WPS) will contain:
Amperage
Post-heat treatment
Travel speed
E71T-1M is an all position FCAW electrode.
true or false?
true
What could happen if the operator grinds the tungsten with the grind marks going around the diameter of the tungsten?
an unstable arc
A small lapse in welder technique and concentration could lead to weld ________, such as lack of fusion.
defects
With an unshielded setup what should the standoff distance be?
1/8
What cutting process can be used with aluminum?
PAC
A filled in flag symbol on the reference line indicates:
Weld in the field
Is the travel angle for GTAW generally backhand or forehand?
Forehand
A fillet weld made in the horizontal position is identified as the ________ position.
2F
What polarity does self shielded FCAW use?
DCEN
Air carbon arc cutting utilizes the same equipment as which process?
SMAW
What does AWS stand for?
American Welding Society
______________ is used to remove material, like welds, but not go all the way through
the material.
gouging
Surface oxides on aluminum alloys melt at a temperature ________ base metal.
Three times that of
True or False:
The bottom side of the reference line is arrow side.
True