Carbon Gouging Electrodes - Premier C&G B 509 |
DC Copper Coated Pointed Gouging Rods:
The air carbon arc process is flexible, efficient, and cost effective on practically any metal; carbon steel, stainless steel and other ferrous alloys; gray, malleable and ductile cast iron; aluminum; nickel; copper alloys and other nonferrous metals. Single-phase machines with low open-circuit voltage may not work for air carbon arc gouging (CAC-A). However, any three-phase welding power source of sufficient capacity may be used for air carbon arc gouging. The arc voltage used in air carbon arc gouging and cutting ranges from a low of 35 to a high of 56 volts; thus the open-circuit voltage should be at least 60 volts. The actual arc voltage is governed by arc length and the type of gouging. For most applications CAC-A is used with DCEP (reverse polarity). The electrode should extend at most 7 inches from the gouging torch with the air jet between the electrode and workpiece.
A minimum extension of 50 mm should be used to prevent damage to the torch parts. Normal compressed air pressures for CAC-A range between 80 psi and 100 psi at the torch; higher pressures may be used, but they don’t remove metal more efficiently. Use 60 psi (413.7 kPa) with the light-duty manual torch. The air hose supplying air to the torch body should have an inside diameter of at least 1/4" (6.5 mm).
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Suggested Current Range for Commonly Used
Electrode Types & Sizes
Electrode Diameter |
DC Electrode With DCEP |
mm |
Minimum AMPS |
Maximum AMPS |
|
3.2 |
130 |
210 |
|
4.0 |
150 |
250 |
|
5.0 |
200 |
300 |
|
6.0 |
300 |
350 |
|
6.5 |
320 |
370 |
|
7.0 |
350 |
400 |
|
8.0 |
400 |
450 |
|
9.0 |
450 |
500 |
|
10.0 |
500 |
550 |
|
11.0 |
600 |
650 |
|
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Recommended Minimum Air Requirements
Type of Torch |
Recommended Compressor Rating |
(1)Air Pressure |
Air Consumption |
Intermittent Use |
Continuous Use |
ASME Receiver size |
psi |
kpa |
cfm |
L/min |
hp |
kw |
hp |
kw |
gal |
litres |
| Light Duty (2) |
40 |
280 |
8 |
227 |
.5 |
0.4 |
1.5 |
1.1 |
60 |
227 |
| General Duty (2) |
80 |
550 |
25 |
708 |
5.0 |
3.7 |
7.5 |
5.6 |
80 |
303 |
| Multipurpose(3) |
80 |
550 |
33 |
934 |
7.5 |
5.6 |
10 |
7.5 |
80 |
303 |
| Automatic(4) |
60 |
414 |
46 |
1303 |
|
|
15 |
11.2 |
80 |
303 |
|
| |
|
1. Pressure while torch in operation. |
2. Accommodates flat electrodes. |
3. Generally considered a foundry torch. |
4. Requires some kind of mechanical manipulation. |
Premissible Noise Exposure :
Ear protection is recommended when noise from the air carbon arc process exceeds permissible levels as listed in OSHA 1910.95
Duration Per Day |
Sound Level DBA (in hours) Slow Response |
| 8 |
90 |
| 6 |
92 |
| 4 |
95 |
| 3 |
97 |
| 2 |
100 |
| 1 , 1/2 |
102 |
| 1 |
105 |
| 1/4 or less |
115 |
|
Model |
Size Dia x Length mm |
Current Range Amp. |
| B503.2 |
3.2x305 (355) |
130-210 |
| B504 |
4x305 (355) |
150-250 |
| B505 |
5x305 (355) |
200-300 |
| B506 |
6x305(355) |
300-350 |
| B506.5 |
6.5x305x(355) |
320-370 |
| B507 |
7x355 |
350-400 |
| B508 |
8x305x(355)(455)(510) |
400-450 |
| B509 |
9x305x(355)(455)(510) |
450-500 |
| B510 |
10x305x(355)(455)(510) |
500-550 |
| B511 |
11x305x(355)(455)(510) |
600-650 |
| B512 |
12x305x(355)(455)(510) |
750-850 |
| B513 |
13x305x(355)(455)(510) |
800-1000 |
| B516 |
16x305x(355)(455)(510) |
1000-1200 |
| B519 |
19x305x(355)(455)(510) |
1200-1400 |
| B525 |
25x305x(355)(455)(510) |
1400-1600 |
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Characteristics :
|
|
|
Size Dia x Length mm |
| Electrical Resistance |
<18.5u Ω m |
without copper coating B509 |
9x355 |
| Breaking Strength |
>24 Mpa |
without copper coating Dia: |
8.75-9.25 |
| Bulk Density |
1.6g/cm³ |
without copper coating Length: |
354-356 |
| Fixed Carbon |
98.50% |
|
|
| Water Content |
<0.3% |
|
|
| Thickness of copper coating |
0.25±0.05mm |
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