Very fine droplets of metal transferred across the arc in an axial fashion describes which mode of metal transfer?

Very fine droplets of metal transferred across the arc in an axial fashion describes which mode of metal transfer?

• A. Short-Circuiting
• B. Globular
• C. Spray
• D. Pulsed Spray

Answer: (C)

When metal transfer occurs as very fine droplets sprayed from the wire tip across the arc in line with the weld axis, you’re looking at spray transfer. This mode happens at higher current and uses a shielding gas (often argon or an argon-based mix). The metal is atomized into small, consistent droplets that are propelled across the arc toward the weld pool, producing a smooth, continuous transfer and good deposition. Short-circuiting transfer involves the wire touching the work and the metal transferring in a series of brief, irregular bursts with larger droplets—quite unlike the fine, continuous spray along the arc. Globular transfer forms larger, irregular droplets that resemble spheres and do not spray steadily across the arc. Pulsed spray is like spray transfer but delivered in bursts; the description here emphasizes a continuous, axial spray of very small droplets, which is characteristic of the spray mode rather than the pulsed variation.

When metal transfer occurs as very fine droplets sprayed from the wire tip across the arc in line with the weld axis, you’re looking at spray transfer. This mode happens at higher current and uses a shielding gas (often argon or an argon-based mix). The metal is atomized into small, consistent droplets that are propelled across the arc toward the weld pool, producing a smooth, continuous transfer and good deposition.

Short-circuiting transfer involves the wire touching the work and the metal transferring in a series of brief, irregular bursts with larger droplets—quite unlike the fine, continuous spray along the arc. Globular transfer forms larger, irregular droplets that resemble spheres and do not spray steadily across the arc. Pulsed spray is like spray transfer but delivered in bursts; the description here emphasizes a continuous, axial spray of very small droplets, which is characteristic of the spray mode rather than the pulsed variation.