Welding Flashcards
The electro classifation ER70S-6 the s stands for short circuit transfer T/F
False
What type of electrode wire is used for gas metal arc welding/GMAW?
Solid
A minimum of 80 percent argon is required to receive spray transfer? T/F
True
GMAW the amp is controlled by adjusting?
The wire feed speed
Which of the following is not
recommended when welding with short circuit Transfer?
Heavy plate
In GMAW the electrode extension is defined distance from?
Contact tub - tip of wire
GMAW which type of metal transfer is restricted flat position and horizontal fillet welds only?
Spray transfer
A warm contact tub causes what?
Poor arc starts
The benefits of adding copper coded wire?
All the above
Power source for GMAW?
Constant voltage
A constant voltage power supply is common used in GMAW? T/F
True
What position n type of welds can be successfully welded on spray transfer carbon steel?
1f, 1g, 2f
What does a 70 mean in ER7OS-6?
Tensil strength
In GMAW the shielding molten metal is arnec n reactive gas? T/F
False
What part of the gun transfers the current?
Contact current
The transfer mode that used low amps low small diameter wire current to welds in all position?
Short circuit
The contact tub should be ?
Size the match
Which of the following is considered an advantage in the Gmaw process?
All the above
Which has below is anerc?
Argon
Wof is not an advantage of the GMAW process?
Not use in windy areas
Which shielding gas or mixture is most often used for welding carbon steel short circuit transfer?
75 percent argon 25 percent carbon dioxide
Which gas mixture or shielding gas will not produce spray transfer?
100 percent co2
The rate at which the arc moves along the weld joint? T/F
False
GMAW is what?
Gas metal arc welding
