SECTION 6
TROUBLESHOOTING
6-3
6.3 Troubleshooting Guide
6.3.1 Reduced Consumable Life
Cutting Up Skeletons
Cutting Up Skeletons
Cutting Up Skeletons
Cutting Up Skeletons
Cutting skeletons (discarded material left after all
pieces have been removed from a plate) to facilitate
their removal from the table can adversely affect
electrode life by:
•
Causing the torch to run off the work.
•
Continuous Pilot Arc edge starts
•
Greatly increasing the frequency of starts. This
is mainly a problem for O
2
cutting and can be
alleviated by choosing a path with a minimum
number of starts.
•
Increase likelihood that the plate will spring up
against the nozzle causing a double arc. This
can be mitigated by careful operator attention
and by increasing standoff and reducing cutting
speeds.
If possible, use a gas torch for skeleton cutting.
Height Control Problems
Height Control Problems
Height Control Problems
Height Control Problems
•
Torch diving is usually caused by a change in
arc voltage when an automatic height control is
in use. Usually the voltage change is the result
of plate falling away from the arc. These
problems can effectively be eliminated by
disabling the height control and extinguishing
the arc earlier when finishing the cut on a falling
plate.
•
Diving can also be caused by a faulty height
control.
Piercing Standoff Too Low
Piercing Standoff Too Low
Piercing Standoff Too Low
Piercing Standoff Too Low
Increase pierce standoff
Starting on edges with
Starting on edges with
Starting on edges with
Starting on edges with
continuous pilot arc
continuous pilot arc
continuous pilot arc
continuous pilot arc
Position torch more carefully or start on adjacent
scrap material.
Work Flipping
Work Flipping
Work Flipping
Work Flipping
The nozzle may be damaged if the torch hits a
flipped up part.
Catching on Pierce Spatter
Catching on Pierce Spatter
Catching on Pierce Spatter
Catching on Pierce Spatter
Increase standoff or start with longer lead-in
Pierce not complete before starting
Pierce not complete before starting
Pierce not complete before starting
Pierce not complete before starting
Increase initial delay time.
Содержание Precision Plasmarc
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Страница 144: ...SECTION 6 TROUBLESHOOTING 6 12 E2 E2 G2 E1 G1 C1 C2E1 C x Q x 4 6 9 Precision Plasma Power Module Schematic DETAIL ...
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