What does the gas do in arc welding? - ️️protects weld from atmosphere
porosity
corosion
What does high frequency do in AC welding? - ️️provides cleaning action and
minimizes the unbalance
which torch requires three hoses? - ️️Water cooled torches
What are the adv of Argon? - ️�...
TIG TEST
What does the gas do in arc welding? - ✔️✔️protects weld from atmosphere
porosity
corosion
What does high frequency do in AC welding? - ✔️✔️provides cleaning action and
minimizes the unbalance
which torch requires three hoses? - ✔️✔️Water cooled torches
What are the adv of Argon? - ✔️✔️cheaper
smoother arc
cools tungsten rod
less heat transferred
What are the purposes of the three wires in the water torches? - ✔️✔️Gas, Water in,
Water out
Disadvantage of Tig compared to all other processes? - ✔️✔️slowest metal deposition
What Gases are used for TIG? - ✔️✔️Argon helium or a mix
Why do you use AC for aluminum? - ✔️✔️DC - negative will release too many
electrons causing too much heat. it will melt through.
What are the three ways to start welding? - ✔️✔️scratch, HF, touch
WHAT DOES EWX stand for? - ✔️✔️E- electrode
W-Tungsten
X- whatever alloy your using (ex: Pure or 2% thoriated
What does SCFH stand for? - ✔️✔️Standard cubic feer per hour
What does TIG stand for? - ✔️✔️Tungsten Inert Gas
Inert Vs Active - ✔️✔️Inert- does not melt with base metal
Active - Melts with base metal
Is argon inert or active? - ✔️✔️Argon = INERT
HELIUM = INERT
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