OM-260273 Page 26
.
Welding wire is energized when
gun trigger is pressed. Before
lowering helmet and pressing trig-
ger, be sure wire is no more than
1/2 in. (13 mm) past end of nozzle,
and tip of wire is positioned cor-
rectly 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
9-3.
Holding And Positioning Welding Gun
Slow
Fillet Weld Electode Extensions (Stickout)
Electrode Extensions (Stickout)
Gun Angles And Weld Bead Profiles
10
°
10
°
S-0634
Push
Perpendicular
Drag
Short
Normal
Long
Short
Normal
Long
Normal
Fast
.
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.
9-4.
Conditions That Affect Weld Bead Shape
Gun Travel Speed
Содержание Handler 190
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