Hypertherm LH2100 - Manual (Page 46)

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OPERATION
LH2125/LH2100 Laser Head Instruction Manual 4-19
Does plasma cloud occur
only when cutting in a
certain direction?
Correct parameters for
Pressure, assist-gas type, focal position,
focal length, cut speed, nozzle size,
nozzle-to-workpiece height and laser power
Yes
No
No
Yes
Have you cut this
material before?
Yes
No Set to closest available process parameters.
Yes
No
Adjust cutting speed: start with 10% decrease.
Yes
No
Reset cutting speed and
decrease gas pressure.
No
Yes
Adjust focal position:
start by moving lens down 10% of material thickness.
Is problem corrected?
No
Yes
Other possible causes:
– Laser mode
– Laser power
– Height sensor operation
Inspect lens for dirt or damage.
Clean or replace if needed.
Yes
No
Inspect lens for
dirt or damage.
Clean or replace.
Yes
No
Is problem corrected?
Is problem corrected?
Is problem corrected?
Is problem corrected? Is problem corrected?
Plasma cloud formation
during high-pressure N2
cutting
Continue
cutting
Continue cutting and record new
parameters.
Are parameters set to stated
specifications or to a process
used in the past?
Inspect Nozzle for damage to baffle,
dross adhesion, beam centering
and orifice condition.
Replace if damaged.