Which transfer mode is typically associated with the highest deposition rate and smooth bead with minimal spatter?

Which transfer mode is typically associated with the highest deposition rate and smooth bead with minimal spatter?

• A. Short-circuit transfer
• B. Globular transfer
• C. Spray transfer
• D. Pulsed transfer

Answer: (C)

Spray transfer delivers metal as a fine spray of tiny droplets across a stable arc, which leads to a high deposition rate and a smooth, uniform bead with minimal spatter. This occurs at higher welding currents and with appropriate shielding gas, so the molten metal atomizes quickly and transfers steadily to the weld pool. The result is efficient material deposition and clean bead contour. In contrast, short-circuit transfer relies on droplets forming by contact and transfer at a lower current, which increases the chance of spatter and gives a less uniform bead. Globular transfer sends large droplets that spray unevenly and spatter more. Pulsed transfer can control heat and reduce spatter, but the overall deposition rate is lower than spray.

Spray transfer delivers metal as a fine spray of tiny droplets across a stable arc, which leads to a high deposition rate and a smooth, uniform bead with minimal spatter. This occurs at higher welding currents and with appropriate shielding gas, so the molten metal atomizes quickly and transfers steadily to the weld pool. The result is efficient material deposition and clean bead contour.

In contrast, short-circuit transfer relies on droplets forming by contact and transfer at a lower current, which increases the chance of spatter and gives a less uniform bead. Globular transfer sends large droplets that spray unevenly and spatter more. Pulsed transfer can control heat and reduce spatter, but the overall deposition rate is lower than spray.