Miller Millermatic 211 Auto-Set, Owner'S Manual

Page: 41 / 52

OM265809 Page 37
9-3. Holding And Positioning Welding Gun
.
Welding wire is energized when gun trigger is pressed. Before lowering helmet and pressing trigger, be sure wire is no more than 1/2 in. (13 mm)
past end of nozzle, and tip of wire is positioned correctly on seam.
1 Hold Gun and Control Gun
Trigger
2 Workpiece
3 Work Clamp
4 Electrode Extension (Stickout)
Solid Wire − 3/8 to 1/2 in.
(9 to 13 mm)
5 Cradle Gun and Rest Hand on
Workpiece
2
3
5
4
90
°
90
°
0
°
-15
°
45
°
45
°
1
0
°
-15
°
S-0421-A
End View of Work Angle Side View of Gun Angle
GROOVE WELDS
End View of Work Angle Side View of Gun Angle
FILLET WELDS
9-4. Conditions That Affect Weld Bead Shape
.
Weld bead shape depends on gun angle, direction of travel, electrode extension (stickout), travel speed, thickness of base metal, wire feed speed
(weld current), and voltage.
Slow
FILLET WELD ELECTODE EXTENSIONS (STICKOUT)
ELECTRODE EXTENSIONS (STICKOUT)
GUN ANGLES AND WELD BEAD PROFILES
10
°
10
°
GUN TRAVEL SPEED
S-0634
Push
Perpendicular
Drag
Short Normal Long Short Normal Long
Normal Fast