Which GMAW mode is described as a pulsed version of spray transfer?

Which GMAW mode is described as a pulsed version of spray transfer?

• A. Globular transfer
• B. Spray transfer
• C. Submerged arc transfer
• D. Pulsed spray arc transfer

Answer: (D)

Pulsed spray arc transfer describes using a pulsed current to achieve spray-style droplet transfer. In spray transfer, the arc current is high enough to produce a steady stream of small droplets from the wire to the weld pool, yielding smooth, high-deposition welds. The pulsed version modulates that current, switching rapidly between a high peak and a lower background level. During each pulse, spray-like droplet transfer occurs, but the overall average current is reduced, cutting heat input while preserving the stable, spray characteristics. This gives better control for thinner materials or positional welding while maintaining good penetration and low spatter compared to continuous spray. The other options don’t fit because globular transfer involves larger, irregular droplets; submerged arc transfer is a different welding process; and plain spray transfer is continuous, not pulsed.

Pulsed spray arc transfer describes using a pulsed current to achieve spray-style droplet transfer. In spray transfer, the arc current is high enough to produce a steady stream of small droplets from the wire to the weld pool, yielding smooth, high-deposition welds. The pulsed version modulates that current, switching rapidly between a high peak and a lower background level. During each pulse, spray-like droplet transfer occurs, but the overall average current is reduced, cutting heat input while preserving the stable, spray characteristics. This gives better control for thinner materials or positional welding while maintaining good penetration and low spatter compared to continuous spray. The other options don’t fit because globular transfer involves larger, irregular droplets; submerged arc transfer is a different welding process; and plain spray transfer is continuous, not pulsed.