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OPERATION
B-7 B-7
INVERTEC STT
WELDING PROCEDURES FOR STT II -
(Steel) Horizontal Fillet (See Table B.1 and B.2)
Table B.1
100% CO
2
Gas Shield (Set for Steel Mode)
Table B.2
75% CO
2
- 25% Ar Gas Shield (Set for Steel Mode)
(Stainless Steel) Horizontal Fillet
(See Table B.3 and B.4)
Table B.3
90% He, 7.5% Ar, 2.5% CO
2
Gas Shield (Set for Steel Mode)
Table B.4
98% Ar, 2% O
2
Gas Shield (Set for Stainless Steel Mode)
45°
END VIEW
75°
FRONT VIEW
DIRECTION
OF
TRAVEL
75°
TOP VIEW
DIRECTION
OF
TRAVEL
Plate Thickness “ (mm) 20 ga 14 ga 10 ga
(0.9) (2.0) (3.25)
Electrode size “ (mm) 0.035 0.045 0.045
(0.9) (1.1) (1.1)
WFS “/min (m/min) 100 100 170
(2.5) (2.5) (4.2)
Peak Current 220 260 280
Background Current 30 40 65
Tailout setting 3 7 5
Average Amperage 60 105 120
Travel Speed “/min 12 12 12
(m/min) (0.3) (0.3) (0.3)
Gas Flow cfh (L/min) 25 (12)
Electrical Stickout “ 1/4 - 3/8
(mm) (6.4 - 10)
Plate Thickness “ (mm) 20 ga 14 ga 10 ga
(0.9) (2.0) (3.25)
Electrode size “ (mm) 0.035 0.045 0.045
(0.9) (1.1) (1.1)
WFS “/min (m/min) 100 100 120
(2.5) (2.5) (3.0)
Peak Current 225 270 310
Background Current 40 65 70
Tailout setting 8 4 6
Average Amperage 70 110 130
Travel Speed “/min 12 12 12
(m/min) (0.3) (0.3) (0.3)
Gas Flow cfh (L/min) 25 (12)
Electrical Stickout “ 1/4 - 3/8
(mm) (6.4 - 10)
45°
END VIEW
75°
FRONT VIEW
DIRECTION
OF
TRAVEL
75°
TOP VIEW
DIRECTION
OF
TRAVEL
Plate Thickness “ (mm) 20 ga 14 ga 10 ga
(0.9) (2.0) (3.25)
Electrode size “ (mm) 0.035 0.045 0.045
(0.9) (1.1) (1.1)
WFS “/min (m/min) 100 130 170
(2.5) (3.3) (4.2)
Peak Current 165 210 250
Background Current 35 60 85
Tailout setting 7 7 4
Average Amperage 40 95 120
Travel Speed “/min 12 16 16
(m/min) (0.3) (0.4) (0.4)
Gas Flow cfh (L/min) 25 (12)
Electrical Stickout “ 1/4 - 3/8
(mm) (6.4 - 10)
Plate Thickness “ (mm) 20 ga 14 ga 10 ga
(0.9) (2.0) (3.25)
Electrode size “ (mm) 0.035 0.045 0.045
(0.9) (1.1) (1.1)
WFS “/min (m/min) 100 130 170
(2.5) (3.3) (4.2)
Peak Current 145 190 280
Background Current 45 95 95
Tailout setting 7 8 7
Average Amperage 60 120 150
Travel Speed “/min 12 12 12
(m/min) (0.3) (0.3) (0.3)
Gas Flow cfh (L/min) 25 (12)
Electrical Stickout “ 1/4 - 3/8
(mm) (6.4 - 10)