Adjustment Recommendation for Perfect Machine Cutting
Narrowing of kerf (divergent)
EN
•
Forward speed of torch
too fast
•
Distance between nozzle
and sheet metal too big
•
Dirty and / or damaged
nozzle
Concave cut surface profile
•
Forward speed of torch
too fast
•
Dirty and/or damaged noz-
zle or nozzle size too small
for the thickness to be cut
•
Cutting oxygen pressure
too low
Melted down top edge
with adherent slag
•
Cutting oxygen pressure
too high
•
Heating flame too strong
•
Distance between nozzle
and sheet metal too big
Single gouges
•
Forward speed of torch
too slow
•
Scaled or corroded or dirty
sheet metal surface
•
Distance between nozzle
and sheet metal too small
•
Flame too weak
•
Flame extinguished with
a ban
•
Sheet metal with finely
divided inclusions
Narrowing of kerf (conver-
gent)
•
Forward speed of torch
too fast
•
Distance between nozzle
and sheet metal too big
•
Cutting oxygen pressure
too high
Irregular cut surface profile
•
Cutting oxygen pressure
too low
•
Dirty and / or damaged
nozzle
•
Forward speed of torch
too fast
Lower edge rounded
•
Cutting oxygen pressure
too high
•
Forward speed of torch
too fast
•
Dirty and / or damaged
nozzle
Grouped gouge areas
•
Forward speed of torch
too fast
•
Scaled or corroded or dirty
shee metal surface
•
Distance between nozzle
and sheet metal too small
•
Flame too weak
Concave cut surface beneath
top edge
•
Cutting oxygen pressure
too high
•
Dirty and / or damaged
nozzle
•
Distance between nozzle
and sheet metal too big
Edge melting on
•
Forward speed of torch
too slow
•
Heating flame too strong
•
Distance between nozzle
and sheet metal too big to
too small
•
Nozzle size too big for the
thickness to be cut
Excessive cut drag line depth
•
Forward speed of torch too
fast or irregular
•
Distance between nozzle
and sheet metal too small
•
Heating flame too strong
Grouped gouges in the bot-
tom half of the cut
•
Forward speed of torch
too slow
•
Dirty and / or damaged
nozzle
14/136
Step at bottom edge
•
Forward speed of torch
too fast
•
Dirty and / or damaged
nozzle
String of solidified droplets
•
Heating flame too strong
•
Distance between nozzle
and sheet metal too small
•
Scaled or corroded sheet
metal surface
Excessive cut drag line
depth
•
Forward speed of torch too
fast or irregular
•
Distance between nozzle
and sheet metal too small
•
Heating flame too strong
Firmly adherent slag line
ad bottom edge
•
Forward speed of torch
too fast or too slow
•
Distance between
nozzle and sheet metal
too big
•
Cutting oxygen pressure
too low
•
Nozzle size too small for
the thickness to be cut
•
Flame too weak
•
Scaled or corroded or
dirty (colour) sheet metal
surface