Gouging Carbons
Spray Copper coated Gouging Carbons

DYNAMIC gouging carbons are designed specifically for the air carbon arc metal removal process, which melts metal with an electric arc, then blows it away with a jet of ordinary shop compressed air. DYNAMIC carbons contain a precisely formulated blend of carbon and graphite that produces the most efficient metal removal performance. They offer excellent arc stability,  superior metal removal rates, uniform diameter and clean slag – free grooves or cuts.

Available in a number of types and sizes, DYNAMIC carbons are ideal for a broad range of applications, such as creating Ugrooves  for weld joint preparations, removing old welds, gouging out cracks, cleaning and repairing castings, removing hard
surface metal, and for rough machining.

They gouge, cut, bevel, pierce or flush off any metal including stainless steel, carbon steel, manganese steel, chrome-moly  alloys, gray, malable and ductile iron, copper, aluminium, magnesium and nickel alloys – fast precisely and economically.
DYNAMIC carbons are made for use in any type of gouging torches connected to a D.C. power supply and compressed air  source. The amperage required depends on the electrode diameter; an electrode is usually selected to make grooves or cuts
slightly larger than its diameter. 

Features

  • Excellent Arc Stability
  • Superior Metal Removal Rate
  • Uniform Diameter
  • Clean Machinelike Grooves or cuts
  • Greater overall Economy

Applications

  • Machining U – Grooves for weld joint preparation
  • Removing defective welds 
  • Cleaning and repairing metal castings
  • Removing hard surface metal to facilitate repair
  • Cutting non ferrous and other “hard to cut” metals
  • Rough machining

Industries

Construction – Foundries – Metal Fabrication – Transportation Equipment - Machining and Machine Tools – Ship Building – General Maintenance

To employ the process you need:

  • A D. C. Power Source
  • A Gouging Torch
  • “DYNAMIC” Gouging Carbons
  • Compressed air (5.6 to 7 kg/cm²) 

Process Description

The Air Carbon Arc process involves:

  • The striking of an arc between the metal work piece and a gouging electrode
  • The melting of metal through use of the arc, and
  • Removal of the molten metal with compressed air that flows parallel to the electrode (air and current flow to the torch
    through a special coaxial hose)

Technical Information

Electro Size and cutting performance

Width of Groove Rod diam x 1.4mm 
Depth of Groove Rod diam x 0.7mm

Carbon Electrode STATRC Performance Standard

Electrical Resistance 19 µ Ω . m
Breaking Strength 27 Mpa
Bulk Density 1.57 g/cm3
Ash Content 0.8%
Water Content 0.3%

Current Selection by electrode size

Carbon size in dia. (mm) 6 7 8 9 10 13 16 19
Minimum - Amps 300 350 400 450 500 800 1000 1200
Maximum  - Amps 350 400 450 500 600 1000 1200 1600
Air - psi 80 80 80 80 80 100 100 100
Air - kg / cm² 5.6 5.6 5.6 5.6 5.6 7.0 7.0 7.0

Material Removed Per Electrode

Electrode size in dia. (mm) 6 8 10 12
GMS / Electrode 350 600 950 1400
* Effective length of electrode 300 mm

Current Selection Guide Chart

Current Indication
Current Copper layer on electrode burns back approx . 20mm max
Too Low Slow cutting and splittering arc.
Too High Over - rapid burning of copper layer on electrode