6
Globular Transfer
As the welding current and voltage are
increased above the maximum recommended for short arc welding,
metal transfer will begin to take on
a different appearance. This welding technique is commonly known as
globular transfer, with metal transferring
through the arc. Usually, the drops of molten metal have a greater
diameter than the wire itself. This
mode of metal transfer can be erratic, with spatter and occasional short
circuiting being common.
Table 1-2 – Minimum Current for
Spray Arc Welding WIRE
ELECTRODE
DIAMETER MINIMUM
WIRE ELECTRODE SHIELDING
SPRAY
ARC TYPE IN.
mm GAS
CURRENT (AMP) MILD
STEEL .030 .76
98% ARGON-2% OXY 150
MILD STEEL .035
.89 98%
ARGON-2% OXY 165
MILD STEEL .045
1.1 98%
ARGON-2% OXY 220
MILD STEEL .052
1.3 98%
ARGON-2% OXY 240
MILD STEEL .062
1.6
98% ARGON-2% OXY
275 STAINLESS
STEEL .035 .89
99% ARGON-1% OXY 170
STAINLESS STEEL .045
1.1 99%
ARGON-1% OXY 225
STAINLESS STEEL .062
1.6 99%
ARGON-1% OXY 285
ALUMI NUM .030
.76
ARGON 95
ALUMIN UM .046
1.19 ARGON
135 ALUMINUM
.062 1.6
ARGON 180
DEOXI DIZED COPPER .035
.89
ARGON 180
DEOXIDIZED COPPER .045
1.1
ARGON 210
DEOXIDIZED COPPER .062
1.6
ARGON 310
SILICON BRONZE .035
.89 ARGON
165 SILICON
BRONZE .045
1.1 ARGON
205 SILICON
BRONZ E .062
1.6 ARGON
270
