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WorksheetsQuiz#2 GTAW Equipment
Total questions: 10
Worksheet time: 10mins
What type of shielding gas is typically used for the GTAW process?
Argon
Helium
Carbon dioxide
Both a and b
Autogenous welding is:
a GTAW technique with filler wire.
done with or with out filler wire.
done without filler wire.
none of these.
Air cooled torches can operate at a maximum amperage of:
100 amps
200 amps
300 amps
400 amps
A collet body is one of:
the only pieces that will work in a typical GTAW torch assembly.
the five pieces that can be used to make up a typical GTAW torch assembly.
the pieces of the torch assembly that is interchangeable with the collet.
the pieces of the torch assembly that is optional when setting up the GTAW torch.
What polarity should a welder set a power source on for GTAW with steel?
DCEP
DCEN
AC
none of these
GTAW process power sources are:
CC (Constant Current)
CV (Constant Voltage)
AV (Average Voltage)
EC (Extra Current)
7. For DCEN welding, on a pedestal grinder the electrode (tungsten) tip should be:
Rounded
Ground flat, as you press the tungsten into the grinding wheel.
Ground longitudinally so any grind marks run lengthwise and rotate the electrode to produce an even taper.
Just break the end off and go for it.
What is the problem with a poorly prepared tungsten electrode or a tungsten electrode that has been touched and contaminated?
Nothing, a skilled welder should be able to handle it!
The contamination and poor preparation improves arc stability.
Causes poor welding and makes the arc difficult to control.
Nothing, it is safer.
Gas tungsten arc welding makes use of:
Shielding gas to prevent oxidation.
A constant current welding machine.
Non consumable tungsten electrode.
All of these.
Nozzles are sized in 1/16'' increments. So, respectively, if a number 6 nozzle is 3/8'' what size would a number 8 be?
3/8''
1/2''
1/4''
5/8''
