The gouging nozzle is designed to supply a relatively large volume of oxygen through the gouging jet. This can be as much as 300 litre/min through a 6mm orifice nozzle. In oxyacetylene gouging, equal quantities of oxygen and acetylene are used to set a near-neutral preheating flame. The oxygen jet flow rate determines the depth and width of the gouge. Typical operating parameters (gas pressures and flow rates) for achieving a range of gouge sizes (depth and width) can be seen in the Table. This product is 13 A-GNM Nozzle, 1/8" (6-8mm width x 3-9mm depth)
Typical operating data for manual oxyacetylene flame gouging | ||||||||
---|---|---|---|---|---|---|---|---|
Nozzle |
Gouge dimensions |
Gas pressure |
Gas consumption |
Travel speed | ||||
Width (mm) |
Depth (mm) |
Acetylene (Bar) |
Oxygen (Bar) |
Acetylene (Litre/min) |
Preheat (Litre/min) |
Oxygen (Litre/min) | ||
3 |
6-8 |
3-9 |
0.48 |
4.2 |
15 |
22 |
62 |
600 |
5 |
8-10 |
6-12 |
0.48 |
5.2 |
29 |
31 |
158 |
1000 |
6.5 |
10-13 |
10-13 |
0.55 |
5.5 |
36 |
43 |
276 |
1200 |
When the preheating flame and oxygen jet are correctly set, the gouge has a uniform profile and its surfaces are smooth with a dull blue colour.