Semi auto 1
The continuously fed electrode improves what?
Deposition rates, reduces starts and stops, can be used semi- auto or automatic
Argon with what percentage of oxygen added improves weld bead contour and penetration?
1 to5%
Which gas is considered an active gas.
Oxygen
Which shielding gas is the least expensive?
CO2
How does a suitcase welder get power to the drive rolls
Voltage sensing clip
GMAW power source is what type?
Constant voltage
Which shielding gas transfers the greatest amount of heat to the weld pool?
CO2
What part of the welding gun transfers the current to the wire electrode?
The contact tip
Where is the flux located on flux cored wire
Inside the wire.
Which type of wire feeder do you have in your booth.Push or PULL Type
Push type system with four drive rolls
Which type of drive rolls are most often used for FCAW and MCAW wires?
Knurled
Wire electrode B-G49A6MG3 which letter designation indicates weld treatment
(A)
Which type of drive rolls are most often used for aluminum wires?
(U)
What two thing add Atmospheric protection to FCAW wire?
Externally supplied shielding gas along with flux ingredient within the cored wire.
Pull Type wire feeders are used for what.
Pull Type are used for softer wires such as aluminum.
With wire welding how is current or (amperage)controlled
By changing the wire feed speed.
With GMAW wire B-G49A6MG3 which letter designation is used for shielding gas
(M)
What travel angle is optimal for open root applications with GMAW?
PULL(Backhand) 5-15 degrees
Electrode extension is referred to as ?
Stick out
Excessive pressure on the drive rollers creates a situation where the wire cannot slip .The blocked end becomes entangled what is this called?
Bird's nest
Which shielding gas mixture is required for spray transfer?
At least 85% Argon
B-G49A6MG3 what number indicates tensile strength of the wire
(49)
None Ferrous alloys are often welded using what mode of metal transfer. Aluminum ,copper, nickel, titanium,
Spray or pulsed spray.
The power source maintains a constant voltage by adjusting output to match wire feed speed TRUE?FALSE
TRUE
List two inert gases
Argon and helium