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WELD.COM
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10
4.3 Cutting Operation
1.
Normal Cut
Fig 4.2 the working ow chart
Turn on
the power
source
Automatic
gas test for
5S
Loose
the
cutting torch
trigger.
Pre-gas
for 2s
The torch move away
the work piece, then ,
the arc stops
Automatic
examine
for 5s
After Initialization
and the fan stop,
press on the torch
trigger
Ignite
the
pilot arc, the
max.
time
is10s
Post-gas
If the tip touch the
work piece and the
current higher than
40A, isn’t it ?
Shift to the work
piece, the pilot
arc change into
cutting arc
The
current
will down to
40A
Cutting
Is the torch trigger
pressed on again among
the period of post-gas?
Restart and continue
working
Finish after post-gas
for 15s