Question

identify the welding processes that use a constant voltage power source? (select all that apply.)

submerged arc welding (saw)
shielded metal arc welding (smaw)
flux cored arc welding (fcaw)
gas tungsten arc welding (gtaw)
gas metal arc welding (gmaw)

Explanation:

Identify power source types

We analyze the electrical characteristics of arc welding processes. Welding Power Sources are classified into constant current (CC) or constant voltage (CV).

Analyze constant voltage (CV)

CV power sources maintain a relatively stable voltage. They are used with continuously fed wire electrodes.

Evaluate each process

• SAW uses a continuously fed wire, typically utilizing CV.
• SMAW is a manual process requiring CC.
• FCAW uses a continuously fed tubular wire, utilizing CV.
• GTAW is a manual/precision process requiring CC.
• GMAW uses a continuously fed solid wire, utilizing CV.

Select correct options

The processes using constant voltage (CV) are SAW, FCAW, and GMAW.

Answer:

• Submerged Arc Welding (SAW) (Correct answer)
• Shielded Metal Arc Welding (SMAW)
• Flux Cored Arc Welding (FCAW) (Correct answer)
• Gas Tungsten Arc Welding (GTAW)
• Gas Metal Arc Welding (GMAW) (Correct answer)