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16: Review Questions
When shielding gas is supplied to a welding station through a manifold system, what piece of equipment is used at the welding station to control the shielding gas?
When a separate wire feeder and welding machine are used, the cable from the wire feeder is plugged into the _____.
A. remote voltage receptacle
B. remote contactor receptacle
C. remote current receptacle
D. flow control
Which type roll is used to feed flux cored electrodes?
A. U-groove.
B. Knurled groove.
C. Teflon® U-groove.
D. V-groove.
How can you adjust the pressure that the drive rolls exert on the electrode wire?
What part of the welding gun needs to be replaced most often?
A. Nozzle.
B. Liner.
C. Switch.
D. Contact tube.
During welding, spatter gets into the _____ and onto the _____.
What is the name of the welding pliers used to install contact tubes and nozzles and to cut electrode wire?
How is the correct shielding gas flow rate set on the flowmeter?
Using Figure 16-11, which of these shielding gases is recommended for welding carbon steel less than 1/8″ (3.2 mm) thick with GMAW and short circuiting transfer?
A. Carbon dioxide.
B. Argon with 2% O₂.
C. 75% argon and 25% CO₂.
D. Argon with 50% CO₂.
The type of shielding gas recommended for welding low-alloy steel using spray transfer is _____.
The type of shielding gas recommended for welding stainless steel using short circuiting transfer is _____.
Select the factors below that should be considered when selecting an electrode.
A. Base metal composition.
B. Manufacturer of the power supply.
C. Base metal properties.
D. Shielding gas used.
E. Welding position.
F. Flow rate of shielding gas.
G. Cleanliness of the base metal.
H. Metal transfer method.
True or False?
An E71T-11 electrode can be used to weld in all positions.
A. True
B. False
What do the letters and numbers in the electrode designation ER70S–3 represent?
What is the recommended wire feed speed and arc voltage when using a .45″ (1.2 mm) electrode and spray transfer to weld low-alloy steel?
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