GTAW Electrode Selection

Click on all of the following that qualify as GTAW electrodes:

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True or False. This piece of tungsten is properly ground for welding on steel in the polarity DCEN

• True

• False

True or False. This tungsten is properly ground for welding on steel in the polarity DCEN

• True

• False

Identify: Click on EWLa-2:

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In the classification of tungsten electrodes the "E" means? Example: EWTh

• Extra

• Electrode

• Wolframite

• Extension

What is the problem with welding with an improperly ground or contaminated tungsten? Click all that apply.

• Arc wander

• Tungsten inclusion

• Poor puddle control

• Lousy weld job

Which tungsten listed below will not work well in the polarity AC?

• EWP

• EWZr

• EWLa-2

• EWTh-2

Which tungsten listed below will not work when using an inverter power source.

• EWP

• EWLa-2

• EWTh-2

• EWZr

What is the problem with improperly grinding your tungsten electrode?

(a)  

Tungsten come in various sizes. What will happen when you attempt to weld with too high an amperage with too small a electrode diameter size? click all that apply.

• You will not be able to keep the point on your tungsten.

• You will struggle with arc start.

• Small diameter tungsten can not carry as much current.

• You will not be able to use pulsed current.