Reference Tables - Thermal Arc Fabricator 140 Service Manual

OPERATION

4.12 Reference Tables

The following tables are provided as user aids when performing MIG or FLUX CORED welding.
Type of Gas
Carbon Dioxide (CO2)
Argon (Ar) - Carbon Dioxide (CO2)
Argon (Ar)
Result Desired
Arc
Voltage
Deeper
Penetration
Shallower
Penetration
Larger Bead
Smaller Bead
1
Higher
Decrease
Narrower Bead
1
Flatter Wider
Increase
Bead
Faster
Deposition Rate
Slower
Deposition Rate
Key: (1) First Choice, (2) Second Choice, (3) Third Choice, (4) Fourth Choice, (5) Fifth Choice
* When these variables are changed, the wire feed speed must be adjusted so that the welding current remains
constant. See DEPOSITION RATE in the WELDING VARIABLES section. This change is especially helpful on materials
of 20 gauge (.04" 1mm approximately) and smaller in thickness.
January 25, 2008
Typical Mixtures
75% Ar – 25% CO2 Mild and low alloy steels, Stainless Steel
Welding Variable
Welding Current Travel
(wire speed) Speed
1
Increase
1
Decrease
1 2
Increase Decrease
2 2
Decrease Increase
1
Increase
1
Decrease
NOTE
Same adjustment is required for wire feed speed .
4-9
FABRICATOR 140, 180
Primary Uses
Mild and low alloy steels
Aluminum
Nozzle Angle Stick out
3 2
Trailing Max Decrease
25°
3 2
Leading Increase
3
Increase
(*)
3
Decrease
(*)
2 3
Trailing Increase
2 3
90° or Decrease
Leading
2
Increase
(*)
2
Decrease
(*)
Wire Gas
size Type
5 4
Smaller CO
2
(*)
5 4
Larger Ar CO
2
mix
3
Smaller
3
Larger
Manual 0-4992