SAW Equipment Setup & Operation 2

Question 1

What is the primary function of the flux hopper in a SAW system?

Accepted Answer

To store and feed granular flux onto the weld joint ahead of the arc

Answer

The flux hopper stores granular flux and feeds it through a nozzle onto the joint, burying the arc to protect the weld pool.

Question 2

When setting up a SAW machine for a new joint configuration, which parameter should typically be adjusted FIRST?

Accepted Answer

Wire feed speed (amperage)

Answer

Wire feed speed controls amperage and is the primary variable that determines heat input, so it is set first before fine-tuning voltage and travel speed.

Question 3

A SAW tractor unit is equipped with an oscillation attachment. What is the main purpose of oscillating the electrode?

Accepted Answer

To widen the bead and improve fusion on wide groove joints

Answer

Electrode oscillation widens the weld bead to fill wide grooves or produce weave beads, improving side-wall fusion.

Question 4

Which contact tip material is most commonly used in SAW torches handling high current levels above 1000 A?

Accepted Answer

Chromium-zirconium copper alloy

Answer

Chromium-zirconium copper alloys offer high electrical conductivity combined with superior heat resistance needed at very high amperages.

Question 5

When using a tandem SAW setup, the leading electrode is typically operated with:

Accepted Answer

DCEP to maximize penetration

Answer

The leading electrode in tandem SAW uses DCEP (reverse polarity) to achieve maximum penetration into the base metal.

(SAW) Submerged Arc Welding Certification Practice Test

(SAW) Submerged Arc Welding Certification Practice Test

SAW Equipment Setup & Operation 2