AWS Welding Processes & Techniques

Question 1

Which welding process uses a continuously fed wire and shielding gas?

Accepted Answer

Gas Metal Arc Welding (GMAW)

Answer

Gas Metal Arc Welding (GMAW), also known as MIG welding, uses a wire feed and shielding gas to protect the weld.

Question 2

What is the primary function of a flux in welding?

Accepted Answer

Protect the weld from contaminants

Answer

Flux prevents oxidation and contamination by producing a shielding gas and slag over the weld area.

Question 3

Which welding process uses a non-consumable tungsten electrode?

Accepted Answer

GTAW

Answer

Gas Tungsten Arc Welding (GTAW or TIG) uses a tungsten electrode that does not melt during welding.

Question 4

Which process is best suited for outdoor welding applications?

Accepted Answer

SMAW

Answer

Shielded Metal Arc Welding (SMAW) is ideal for outdoor work due to its built-in flux that protects the weld from wind and contaminants.

Question 5

What does the term 'arc length' refer to in arc welding?

Accepted Answer

Distance between the electrode and the workpiece

Answer

Arc length is the distance between the tip of the electrode and the workpiece, and it influences bead shape and penetration.

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