GMAW Review
Study online at https://quizlet.com/_133s0g
1. active gas A gas that reacts with other elements. GMAW uses both
active and inactive gas as shielding.
2. American Weld- The non-profit society that regulates the industrial stan-
ing Society dards for welding and promotes the welding industry.
3. amperage A measurement that indicates the amount of current flow-
ing in a circuit, which is measured in amperes. GMAW
_____ is determined by wire speed.
4. argon An inactive gas commonly used as shielding. _____ is
much heavier than air, so it effectively shields the weld
area.
5. carbon dioxide An active gas commonly used as shielding for GMAW.
____ ______is inexpensive but yields a violent arc.
6. carbon steel A steel that consists of iron and carbon, without any addi-
tional materials.
7. constant voltage A welding machine that maintains a constant voltage set-
welder ting while compensating for changes in amperage.
8. consumable An electrode that conducts electricity to the arc but also
electrode melts into the weld as a filler metal.
9. contact tip The device located inside the welding gun that conducts
electricity to the electrode. The _____ ___ is usually made
of copper.
10. corrosion resis- A metal's ability to resist attack by other elements and
tance chemicals.
11. crater An undesirable depression in the weld bead. A _____ can
cause cracking if it is not properly filled.
12. cylinder pres- The device that indicates the amount of shielding gas
sure gauge present in the gas cylinder.
13. DCEP
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, GMAW Review
Study online at https://quizlet.com/_133s0g
An abbreviation for direct current electrode positive. _____
is another way of expressing direct current with reverse
polarity.
14. deoxidizer A material that removes oxygen from the molten weld
puddle and arc. Oxygen can ruin a weld bead.
15. deposition rate The rate at which an electrode melts into the molten weld
puddle to form a weld.
16. drag angle A term used in industry for the backhand technique.
17. ductility A metal's ability to be drawn, stretched, or formed without
breaking.
18. duty cycle The amount of time in a ten-minute period that an elec-
trical device can perform work without overheating. If a
welding gun has a 30% ____ ____, it can operate for three
consecutive minutes and must rest for seven.
19. electrical resis- The opposition to current flow. Excessive stickout causes
tance increased _________ ___________ between the elec-
trode and workpiece.
20. electrode axis An imaginary line through the center of the electrode.
21. electrode diame- A measurement of the thickness of the electrode. GMAW
ter has the thinnest _________ _________, which allows it to
weld thin base metals.
22. electrode exten- The distance from the end of the contact tip to the end of
sion the electrode.
23. electrode liner The insulated lining that surrounds the wire electrode and
supports it from the wire feeder to the contact tip.
24. fast-freeze weld A weld that solidifies quickly. ____ ________ welds are
more easily performed out-of-position, and they reduce
the risk of a leaking weld puddle.
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Study online at https://quizlet.com/_133s0g
1. active gas A gas that reacts with other elements. GMAW uses both
active and inactive gas as shielding.
2. American Weld- The non-profit society that regulates the industrial stan-
ing Society dards for welding and promotes the welding industry.
3. amperage A measurement that indicates the amount of current flow-
ing in a circuit, which is measured in amperes. GMAW
_____ is determined by wire speed.
4. argon An inactive gas commonly used as shielding. _____ is
much heavier than air, so it effectively shields the weld
area.
5. carbon dioxide An active gas commonly used as shielding for GMAW.
____ ______is inexpensive but yields a violent arc.
6. carbon steel A steel that consists of iron and carbon, without any addi-
tional materials.
7. constant voltage A welding machine that maintains a constant voltage set-
welder ting while compensating for changes in amperage.
8. consumable An electrode that conducts electricity to the arc but also
electrode melts into the weld as a filler metal.
9. contact tip The device located inside the welding gun that conducts
electricity to the electrode. The _____ ___ is usually made
of copper.
10. corrosion resis- A metal's ability to resist attack by other elements and
tance chemicals.
11. crater An undesirable depression in the weld bead. A _____ can
cause cracking if it is not properly filled.
12. cylinder pres- The device that indicates the amount of shielding gas
sure gauge present in the gas cylinder.
13. DCEP
1/8
, GMAW Review
Study online at https://quizlet.com/_133s0g
An abbreviation for direct current electrode positive. _____
is another way of expressing direct current with reverse
polarity.
14. deoxidizer A material that removes oxygen from the molten weld
puddle and arc. Oxygen can ruin a weld bead.
15. deposition rate The rate at which an electrode melts into the molten weld
puddle to form a weld.
16. drag angle A term used in industry for the backhand technique.
17. ductility A metal's ability to be drawn, stretched, or formed without
breaking.
18. duty cycle The amount of time in a ten-minute period that an elec-
trical device can perform work without overheating. If a
welding gun has a 30% ____ ____, it can operate for three
consecutive minutes and must rest for seven.
19. electrical resis- The opposition to current flow. Excessive stickout causes
tance increased _________ ___________ between the elec-
trode and workpiece.
20. electrode axis An imaginary line through the center of the electrode.
21. electrode diame- A measurement of the thickness of the electrode. GMAW
ter has the thinnest _________ _________, which allows it to
weld thin base metals.
22. electrode exten- The distance from the end of the contact tip to the end of
sion the electrode.
23. electrode liner The insulated lining that surrounds the wire electrode and
supports it from the wire feeder to the contact tip.
24. fast-freeze weld A weld that solidifies quickly. ____ ________ welds are
more easily performed out-of-position, and they reduce
the risk of a leaking weld puddle.
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