ESAB Fabricator 252i, Руководство по эксплуатации

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ESAB FABRICATOR 252i
BASIC WELDING 4-16 Manual 0-5423
Art # A-04273
Incorrect sequence
Insufficient
gap
Figure 4-39: Example of insufficient gap or incorrect sequence
Table 4-5a:
FAULT CAUSE REMEDY
4 A groove has been
formed in the base
metal adjacent to
the toe of a weld
and has not been
filled by the weld
metal (undercut).
A Welding current is too high. A Reduce welding current.
B Welding arc is too long. B Reduce the length of the welding arc.
C Angle of the electrode is
incorrect.
C Electrode should not be inclined less than 45° to the
vertical face.
D Joint preparation does not
allow correct electrode angle.
D Allow more room in joint for manipulation of the
electrode.
E Electrode too large for joint. E Use smaller gauge electrode.
F Insufficient deposit time at
edge of weave.
F Pause for a moment at edge of weave to allow weld
metal buildup.
G Power source is set for MIG
(GMAW) welding.
G Set power source to STICK (SMAW) mode.
5 Portions of the weld
run do not fuse to
the surface of the
metal or edge of the
joint.
A Small electrodes used on
heavy cold plate.
A Use larger electrodes and preheat the plate.
B Welding current is too low. B Increase welding current.
C Wrong electrode angle. C Adjust angle so the welding arc is directed more into
the base metal.
D Travel speed of electrode is
too high.
D Reduce travel speed of electrode.
E Scale or dirt on joint surface. E Clean surface before welding.
Art # A-04274_AB Lack of fusion caused by dirt,
electrode angle incorrect,
rate of travel too high
Lack of side fusion, scale
dirt, small electrode,
amperage too low
Lack of inter-run fusion
Lack of Root Fusion
Figure 4-40: Example of Lack of Fusion
Table 4-5b: STICK (SMAW) metal welding trouble shooting