Shielding Gas Flow Optimizer
Calculate optimal gas flow rate based on nozzle size, process, and conditions.
Flow Rate Guidelines (CFH)
| Process | Low Amps | Med Amps | High Amps |
|---|---|---|---|
| GMAW Short Arc | 25-30 | 30-35 | 35-40 |
| GMAW Spray | 35-40 | 40-50 | 50-60 |
| FCAW-G | 35-40 | 40-50 | 50-60 |
| GTAW | 15-20 | 20-30 | 30-40 |
Shielding Gas Flow Principles
Why Flow Rate Matters
- Too Low: Inadequate coverage causes porosity, oxidation
- Too High: Creates turbulence, draws in atmospheric air
- Optimal: Laminar flow provides consistent coverage
Adjustment Factors
- Wind/Draft: Increase 25-50% or use windscreen
- Larger Nozzle: Proportionally higher flow
- Helium Mix: 1.5-2x flow rate vs pure Argon
- Long CTWD: Increase flow 10-15%
Troubleshooting
- Porosity: Check for drafts, increase flow, check hose/connections
- Oxidation: Increase flow, clean nozzle of spatter
- Inconsistent Arc: May be turbulence - try reducing flow