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41
Travel Direction
Air Flow @ 80psi
Always underneath the Carbon
Torch Head
Carbon Electrode
DC (+)
Work Piece DC (-)
Stickout
170mm
Maximum
Clamp
DC AIR CARBON ARC GOUGING
Copper Coating
Carbon
SuGGESTED CuRREnT RAnGES FOR COMMOnLY uSED CARBOn ELECTRODE TYPES AnD SIZES
Electrode
DC Electrode With
AC Electrode WIth
AC Electrode With
Diameter
DC+ Electrode
AC
DC- Electrode
mm
Minimum
Maximum
Minimum
Maximum
Minimum
Maximum
Amps
Amps
Amps
Amps
Amps
Amps
3.2
60
90
-
-
-
-
4.0
90
150
-
-
-
-
5.0
200
250
200
250
150
180
6.5
300
400
300
400
200
250
8.0
350
450
-
-
-
-
9.5
450
600
350
450
300
400
12.5
800
1000 - -
- -
The air jet ori
fi
ce of the torch head clamp needs to be located underneath the electrode and facing towards
the work end of the electrode with the air jet between the electrode and work piece. To avoid damage to
the torch head a minimum extension of the electrode should be no less than 45mm. Air pressure should
range between 80 psi and 100 psi at the torch and the air supply hose requires and internal diameter of no
less than 6.5mm
.
Single-phase machines with low open-circuit voltage are not suitable for air carbon arc gouging. Most
three-phase welding power sources of suf
fi
cient amperage output may be used for air arc gouging.
The arc voltage required for air carbon arc gouging and cutting ranges from 35 to 56 volts, therefore the
open-circuit voltage needs to be at least 60 volts. For most applications the carbon electrode is connected
DC+ and the electrode should not extend more than 170mm from the gouging torch otherwise the air jet
becomes ineffectual in removing the molten material.
The air carbon arc process is
fl
exible, ef
fi
cient, and cost effective on practically any metal; carbon steel,
stainless steel and other ferrous alloys; as well as cast iron, aluminium, nickel, copper alloys and other
non-ferrous metals. It has found many uses in industry today from metal fabrication, casting
fi
nishing,
chemical and petroleum industry, construction, mining, general repair, and maintenance.
Process
Air Carbon-Arc Gouging, also known as Air Arc Gouging is an arc cutting/gouging process. A copper
coated carbon electrode connected to a welding power source is used to create an intense arc at the work,
the heat of a carbon arc establishes a molten pool on the work piece. The molten metal is then removed by
a continuous stream of compressed air.
AIR CARBON-ARC GOUGING
Содержание RazorWeld MS500
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