Instructions / Assembly

Table Of Contents
89
GMAW
www.lincolnelectric.com
S
pray Arc
A
non-standard term used to describe the high-energy
m
ode of metal transfer known as axial spray transfer.
S
urface Tension
T
he forces that act in a molten droplet of weld
metal to prevent it from flowing. The surface tension forces exist
at a molecular level below the surface of the molten droplet and
act upon those molecules at the surface of the molten drop.
Surface Tension Transferâ„¢ A proprietary process developed
by the Lincoln Electric Company, which provides a low heat
input form of metal transfer. The process uses a reactive power
s
ource, which monitors the arc and is able to respond
instantaneously to the changing arc requirements. The process
relies on surface tension to transfer the molten metal from the
electrode to the work piece.
STTâ„¢ The acronym used for Surface Tension Transfer.
W
aveform Generator
A
specific term applied to inverter transfer
p
ower sources, which depend upon internal software to
modulate the output of the power source. These types of power
sources are unique to STT and other modes of GMAW transfer.
Wire Welding A non-standard term used to describe any
welding process, which employs continuously fed filler metal.
The electrode used may be tubular or solid electrodes.
Work Piece Lead The electrical conductor located between the
power source and the work piece. In the GMAW process, the
w
ork-piece lead is usually DC-.