Which transfer mode is associated with fine droplets across the arc?

Which transfer mode is associated with fine droplets across the arc?

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

Answer: (A)

In this context, the key idea is how molten metal is transferred from the electrode to the workpiece. When the current is high enough to drive many tiny droplets across the arc, you get a spray of fine droplets moving from the wire toward the weld pool. This is the spray transfer mode: it produces a smooth, stable arc with high deposition efficiency and minimal spatter because the droplets are small and numerous, all propelled across the arc rather than forming large single droplets or shorting back to the workpiece. Globular transfer, by contrast, sends larger, irregular droplets that tend to spatter and are less stable. Short circuit transfer involves the wire tip touching the workpiece and repeatedly arcing as the arc forms and breaks, which causes buzzing and interruptions. Pulsed spray transfer uses a pulsed current to shape the spray and control heat input, but the classic descriptor of fine droplets crossing the arc aligns with spray transfer.

In this context, the key idea is how molten metal is transferred from the electrode to the workpiece. When the current is high enough to drive many tiny droplets across the arc, you get a spray of fine droplets moving from the wire toward the weld pool. This is the spray transfer mode: it produces a smooth, stable arc with high deposition efficiency and minimal spatter because the droplets are small and numerous, all propelled across the arc rather than forming large single droplets or shorting back to the workpiece.

Globular transfer, by contrast, sends larger, irregular droplets that tend to spatter and are less stable. Short circuit transfer involves the wire tip touching the workpiece and repeatedly arcing as the arc forms and breaks, which causes buzzing and interruptions. Pulsed spray transfer uses a pulsed current to shape the spray and control heat input, but the classic descriptor of fine droplets crossing the arc aligns with spray transfer.