OPERATION
The Workpiece
is Not Cut Fully.
This May be Caused
by:
• The cutting current is too low.
• The cutting speed is too high.
• The
electrode
and
nozzle
of the
torch
are
bumed
• The workpiece is too thick
Molten Slag Drops From The Bottom of Workpiece.
This May be Caused by:
• The cutting speed is too low
• The
electrode
and
nozzle
of the
torch
are
bumed
• The cutting current is too high
CUTTING
PARAMETERS
TABLE
Select proper current according to the cutting parameters table, workpiece material, cutting thickness and cutting speed, etc (The
figure in the below table is an approximation.)
Cutting Speed (m/min) When Cutting Current is 65A
1.5
1.5
1.5
Cutting thickness (mm)
Mild
steel
Galvanized
steel
Stainless
steel
Aluminum
Brass
Red copper
0.1
2
3
4
5
8
9
8
8
8
8
5
5
6
4
4
4
7
REPLACEMENT
OF
ELECTRODE
AND
NOZZLE
When the phenomena
below occur, the electrode and nozzle should be replaced
Othervvise, there will be strong arc in the nozzle,
which
will break
down
the electrode
and the nozzle,
or even
burn the torch.
Nozzles
of different
models
are different,
so ensure
the
nozzle is Of the same model when replacing it.
• Electrode
wear
> 1 5mm
• Distortion
of the
nozzle
• Cutting speed declining, arc with green flame
• Difficult in arc ignition
• Irregular cut
22