Section 8 - Welding Parameters - Miller Electric MIGHT High Power TIG 150 Owner's Manual

SECTION 8 – WELDING PARAMETERS
8-1. Guideline For Welding Stainless Steel
Thickness Of
Type Of Weld
WorkPiece (mm)
Butt
Over
0.6
Corner
T shape
Butt
Over
1.0
Corner
T shape
Butt
Over
1.6
Corner
T shape
Butt
Over
2.4
Corner
T shape
Butt
Over
3.2
Corner
T shape
8-2. Welding Amperage And Diameter Of Tungsten Electrode
Electrode Diameter
(mm)
1.0
1.6
2.4
8-3. Welding Amperage And Welding Wire
Welding wire diameter is dependent on welding amperage.
Please refer to the following chart for reference.
Composition of welding wire should be the same composition as the work piece.
Welding Amperage (A)
10-20
20-50
50-100
100-200
OM-221 022 Page 18
Welding Amperage
Downward Sideward
10-15
10-15
10-20
15-20
30-40
40-50
45-55
50-60
60-100
60-100
60-80
70-90
100-120
110-130 100-120
100-120
110-130 100-120
120-140 110-130
130-150 120-140
120-140 110-130
130-150 115-135
Welding Amperage
Electrode Minus
2% Thoriated Tungsten
15-80
70-150
140-235
Welding Wire diameter (mm)
Under 1.0
Under 1.6
1.0-2.4
1.6-3.2
Upward
10-15 10-15
10-15 10-15
10-20 10-20
15-20 15-20
30-40 30-40
40-50 40-50
45-55 45-55
50-60 50-60
60-80 60-70
70-100 80-90
60-70 60-70
70-90 70-90
90-110 90-110
100-120
90-110 90-110
100-120
105-125
120-140
115-135
120-140
When Diameter Of Tungsten Is Not Correct
Diameter Too Small
Tungsten Melts
Welding Speed Argon Gas Flow
(cm/min) (liters/min)
40 4
20 4
40 4
35 4
15-40 5
15-30 5
20-40 5
10-35 5
15-30 5
15-30 5
20-40 5
10-20 5
20-30 5
20-30 5
25-30 5
15-25 5
30 5
25 5
30 5
25 5
Diameter Too Large
Unstable Arc