OM-279299 Page 53
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
11-3. 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.
11-4. Conditions That Affect Weld Bead Shape
Gun Travel Speed
Содержание Millermatic 255
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