Question

identify gtaw torch part a.

collet body
gas nozzle
back cap
collet

Explanation:

Identify the component in the diagram

The diagram shows an exploded or highlighted view of a Gas Tungsten Arc Welding (GTAW/TIG) torch assembly. The arrow labeled A points directly to the cylindrical outer cup at the front end of the torch.

Analyze the function of the highlighted part

This cylindrical component (often made of ceramic, alumina, or glass) fits onto the front of the torch body. Its primary function is to direct the shielding gas flow to the weld zone to protect the tungsten electrode and molten weld pool from atmospheric contamination. This component is commonly referred to as the gas nozzle or gas cup.

Evaluate the given options

• Collet Body: This is an internal brass component that screws into the torch body to hold the collet and distribute shielding gas.
• Gas Nozzle: This is the external ceramic/alumina cup at the front of the torch, which matches part A.
• Back Cap: This is the long, medium, or short plastic cap that screws into the back of the torch to secure the tungsten electrode.
• Collet: This is the internal copper sleeve that fits inside the collet body and clamps down on the tungsten electrode when the back cap is tightened.

Therefore, part A is the Gas Nozzle.

Answer:

• (A) Collet Body
• (B) Gas Nozzle (Correct answer)
• (C) Back Cap
• (D) Collet