Kjellberg SmartFocus 300 Short Instruction Manual page 25

Pos : 5.5 /Allgemei nes/Pl as masc hneidverfahren,T abelle @ 2\mod_1238069850087_19.doc x @ 9805 @ @ 1
Dry-plasma cutting
without swirl gas
In plasma cutting without
swirl gas the plasma arc hits
the workpiece immediately
after crossing the nozzle.
The nozzle can be damaged
by Spatter and resulting
double arcs.
A damage of the nozzle
causes a poor cutting quality.
Dry plasma cutting process with swirl gas
without enhanced constriction of the plasma
arc
Angle deviations of the cutting surface are
possible, especially at thin materials.
At sheets up to 5 mm the angle deviation can
amount 5 to 10 degrees.
Pos : 6 /Steuer module/--------------- Seitenumbr uch --------------- @ 0\mod_1197390577023_19.doc x @ 1454 @ @ 1
Plasma cutting process
with swirl gas
A Coolant circuit
B Plasma gas
C Swirl gas
Plasma torches with swirl gas
technology are using the swirl
gas for shielding the plasma arc
from the environment.
The nozzle of the plasma torch is
protected against spatter by the
swirl gas cap and the
intermediately streaming swirl
gas (vitally important while hole
piercing).
By the possibility to vary also the
swirl gas in composition and flow
rate, the cutting quality can be
improved further.
Dry plasma cutting process with swirl gas
with enhanced constriction of the plasma arc
(HiFocus-technology)
The new HiFocus-technology reduces the angle deviation of
the cutting surface by an enhanced constriction and
stabilization of the plasma arc.
The cutting surfaces in the thin sheet metal range are
nearly rectangular, that results in much higher accuracy,
comparable with laser cuts.
Reworking of the metallic blank and dross free cutting
surface is normally not necessary.
General information
Under water-plasma cutting
with swirl gas
The under water plasma cutting process
reduces the pollution of the environment
by dust, aerosol, and noise level
considerably in comparison to the dry
plasma cutting process, in addition,
ultraviolet radiation is filtered in the water.
The distortion of the cutting material is
very low.
The energy consumption compared with
the dry plasma cutting is however higher.
By using swirl gas technology the cutting
process expires with high process
stability. This guarantees also high cutting
quality for under water cutting.
9