Basics of GMAW
GMAW is also commonly known as __________ welding.
MIG (Metal Inert Gas) welding
The gun used to feed wire and shielding gas during welding.
MIG welding gun
The protective gear that covers your eyes and face when welding.
Welding Helmet
The motion used to move the gun along the joint.
travel motion
A weld defect caused by not enough heat or improper angle.
lack of fusion
In GMAW, the electrode is a continuously fed __________.
Wire electrode
This machine provides power for welding.
welding power source (welder)
These should always be worn to protect your hands from sparks and heat.
welding gloves?
Too much of this can cause the weld to burn through the metal.
amperage or voltage/heat input
If the wire feed speed is too high, you may hear this sound
stubbing or popping
What does the “G” in GMAW stand for?
Gas
The small copper piece at the end of the gun that the wire passes through.
A contact tip
Flammable liquids like oil and paint should be stored here.
What is an approved flammable storage cabinet
The space left between two pieces of metal before welding
root gap or joint gap
Too much spatter may mean you need to adjust this.
voltage or wire feed speed
Name one advantage of GMAW over stick welding.
Faster process, less cleanup, easier to learn
The part that holds the wire spool and pushes it through the cable.
the wire feed system/drive rolls
This is the percent of the time safety glasses should be worn in the shop.
100%
Keeping this consistent ensures a uniform weld bead
travel speed
When gas flow is blocked, this may appear in the weld
porosity
The process that joins metals by heating them to their melting point.
welding
This piece of equipment keeps the weld area from oxidation by using gas.
shielding gas?
This safety item is used to remove dangerous welding fumes from the work area.
Ventilation System
This type of transfer produces little spatter and is often used for thicker materials
spray transfer
If the weld looks weak and uneven, you may be moving at this incorrect pace
moving too fast or too slow