Principals
This is the mostly commonly shielding gas used in GTAW.
What is Argon?
In a GTAW torch, this piece of copper clamps the tungsten electrode in place while welding.
What is the Collet?
This type of electrode is non-consumable and does not become part of the weld pool.
What is a Tungsten Electrode?
After the foot pedal is pressed and the arc starts, this is established and filler rod is added to it.
What is the weld pool?
The best way to check for gas leaks is the use this combination.
What is soap and water?
The operator can adjust the amperage during the GTAW process using this.
What is a Foot Amptrol?
This type of GTAW torch uses liquid to help cool the troch while welding.
What is a Water-cooled Torch?
GTAW electrode stick out should be this many times the diameter of the electrode.
What is 2-3 times?
When starting an arc for GTAW there are two ways, Lift arc and this way that does not make contact with the metal.
What is High frequency start?
In a dusty environment, this should be done to the welding machine periodically. Usually done at low pressure.
What is blowing out the machine?
Most GTAW power sources can be operated in DC or AC polarity. This AC polarity is mainly used for this non-ferrous metal.
What is Aluminum?
This shielding gas is expensive and is the best option to welding aluminum with.
What is Helium?
While welding on 1/8" material, the filler rod should be this thick or smaller.
What is 1/8"
This technique keeps the cup in contact with the material and is used to make weave beads.
What is walking the cup?
When welding for a long period of time, this should be considered. This is based on a 10 minute working period.
What is duty cycle.
This is the amount of times a second AC polarity flips from AC to DC.
What is 120?
This type of GTAW welding machine helps make it lighter weight and is able to do pulse welding.
What is an inverter welding machine?
This color tungsten is considered to be cancerous and should be chosen as a last possible option.
What is Red tungsten?
Also known as autogenous welding, this technique uses no filler rod when welding.
What is fusion welding?
Inspect this type of welding torch for leaks to prevent electric shock.
What is a water-cooled torch?
In GTAW this polarity results in better penetration, and the heat is concentrated in the work piece.
What is DCEN?
When there is a risk of freezing, the preferred coolant is a 50%/50% mixture of water and this other liquid.
What is Ethylene glycol?
This tungsten color code represents EWLa-2
What is Blue?
When welding on stainless steel, having high heat and lack of gas coverage will cause the weld to not have this after welding?
What is "good color?"
This is the first thing to check when the arc won't start.
What is the work lead?