Typical Mig Process Control Settings - Miller BOBCAT 225 NT Owner's Manual

13.2 Typical MIG Process Control Settings

Note
These settings are guidelines only. Material and wire type, joint design, fitup, position, shielding
gas, etc. affect settings. Test welds to be sure they comply to specifications.
Material thickness determines weld
parameters.
.035 in
Wire
Size
.030 in
.035 in
.045 in
Set voltage midway between high/low voltage.
Wire speed (amperage) controls weld pe-
netration (wire speed = burn-off rate)
Voltage controls height and width of
weld bead.
OM-405
Wire Size Amperage Range
.030 in 40 – 145 A
.035 in 50 – 180 A
.045 in 75 – 250 A
Wire Speed
Recommendation
(Approx.)
2 in per ampere 2 x 125 A = 250 ipm
1.6 in per ampere 1.6 x 125 A = 200 ipm
1 in per ampere 1 x 125 A = 125 ipm
Low voltage: wire stubs into work
High voltage: arc is unstable (spatter)
1/8 or
Convert Material
.125 in
(.001 in = 1 ampere)
Select Wire Size
Select Wire Speed
125 A based on 1/8 in
material thickness
ipm = inch per minute
Thickness to
Amperage (A)
.125 in = 125 A
(Amperage)
Select Voltage
ST-800 354
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