Correct Answer:
A. TIG welding (Tungsten Inert Gas welding) involves using a tungsten electrode to create an electric arc between the electrode and the workpiece, with the weld area protected by an inert gas, usually argon or helium. The process may or may not include a filler rod, which is added separately to the weld pool.
Explanation:
- A. Correct: TIG welding uses a non-consumable tungsten electrode to produce an electric arc. The weld area is shielded by an inert gas like argon or helium to protect the weld from contamination. A filler rod is used separately if needed.
- B. Incorrect: TIG welding does not use a consumable electrode or a mixture of carbon dioxide and oxygen gases. The process uses an inert gas shield and a non-consumable tungsten electrode.
- C. Incorrect: TIG welding does not involve lasers or nitrogen gas. The process uses a tungsten electrode and an inert gas for shielding, and the filler material is added separately.
- D. Incorrect: TIG welding does not use a rotating arc, copper electrode, or liquid flux. It uses a tungsten electrode and an inert gas shield to protect the weld area.
Correct Answer:
A. TIG welding (Tungsten Inert Gas welding) involves using a tungsten electrode to create an electric arc between the electrode and the workpiece, with the weld area protected by an inert gas, usually argon or helium. The process may or may not include a filler rod, which is added separately to the weld pool.
Explanation:
- A. Correct: TIG welding uses a non-consumable tungsten electrode to produce an electric arc. The weld area is shielded by an inert gas like argon or helium to protect the weld from contamination. A filler rod is used separately if needed.
- B. Incorrect: TIG welding does not use a consumable electrode or a mixture of carbon dioxide and oxygen gases. The process uses an inert gas shield and a non-consumable tungsten electrode.
- C. Incorrect: TIG welding does not involve lasers or nitrogen gas. The process uses a tungsten electrode and an inert gas for shielding, and the filler material is added separately.
- D. Incorrect: TIG welding does not use a rotating arc, copper electrode, or liquid flux. It uses a tungsten electrode and an inert gas shield to protect the weld area.