STT stands for which term?

STT stands for which term?

• A. Surface Tension Transfer
• B. Short Time Transfer
• C. Spray Transfer Theory
• D. Surface Tilt Transfer

Answer: (A)

Surface Tension Transfer is the term, describing a MIG/MAG welding transfer mode where the droplet is transferred across the arc primarily by surface tension rather than by short-circuiting or spraying. In this approach, the current waveform is shaped to encourage the molten metal at the wire tip to neck and detach smoothly due to surface tension, producing a stable, controlled transfer with less spatter and lower heat input. This makes it especially useful for welding thinner materials with good bead appearance and precision. The other phrases aren’t recognized names for this MIG transfer method, so they don’t fit the concept described by STT.

Surface Tension Transfer is the term, describing a MIG/MAG welding transfer mode where the droplet is transferred across the arc primarily by surface tension rather than by short-circuiting or spraying. In this approach, the current waveform is shaped to encourage the molten metal at the wire tip to neck and detach smoothly due to surface tension, producing a stable, controlled transfer with less spatter and lower heat input. This makes it especially useful for welding thinner materials with good bead appearance and precision. The other phrases aren’t recognized names for this MIG transfer method, so they don’t fit the concept described by STT.