Which welding process is performed with a filler rod added by hand?

Which welding process is performed with a filler rod added by hand?

• A. Gas Tungsten Arc Welding
• B. Shielded Metal Arc Welding
• C. Gas Metal Arc Welding
• D. Submerged Arc Welding

Answer: (A)

The key idea is whether filler metal is introduced by hand during the welding process. In Gas Tungsten Arc Welding, a non-consumable tungsten electrode is used, and the filler metal is typically added by hand with a filler rod as the weld pool forms. This gives the welder precise control over the amount and placement of filler metal, which is especially important for tight joints or thin materials. In contrast, Shielded Metal Arc Welding uses a consumable electrode that also acts as the filler, fed from the electrode holder; Gas Metal Arc Welding uses a continuously fed filler wire from a spool without manual rod handling; and Submerged Arc Welding combines a continuous filler wire with flux, all fed automatically. Therefore, adding a filler rod by hand is characteristic of Gas Tungsten Arc Welding.

The key idea is whether filler metal is introduced by hand during the welding process. In Gas Tungsten Arc Welding, a non-consumable tungsten electrode is used, and the filler metal is typically added by hand with a filler rod as the weld pool forms. This gives the welder precise control over the amount and placement of filler metal, which is especially important for tight joints or thin materials.

In contrast, Shielded Metal Arc Welding uses a consumable electrode that also acts as the filler, fed from the electrode holder; Gas Metal Arc Welding uses a continuously fed filler wire from a spool without manual rod handling; and Submerged Arc Welding combines a continuous filler wire with flux, all fed automatically. Therefore, adding a filler rod by hand is characteristic of Gas Tungsten Arc Welding.