Gas Tungsten Arc Welding Flashcards
What is another name for GTA welding?
TIG welding
What type of shielding gases are used for GTA welding?
Helium and argon
Why is GTA welding preferred over oxy-acetylene welding for building and repairing welded steel tube aircraft structure?
The heat is concentrated in the weld and does not cause as much distortion as gas
What is the function of the inert gas used in GTA and GMA welding?
The inert gas forms a shield to keep oxygen away from the weld puddle so oxides cannot form and weaken the weld
What is used as the electrode in GTA welding?
A small-diameter tungsten wire
What are three types of power that can be used for GTA welding?
DC-straight polarity, DC-reverse polarity, and AC
Which type of power provides the greatest heat and deepest penetration in GTA welding?
DC-straight polarity
Which type of power is used for GTA welding aluminum and magnesium?
DC-reverse polarity
