Bottled nitrogen is expensive, unreliable, and runs out mid-shift. On-site PSA delivers 99.999% pure N₂ 24/7 — payback in 6–12 months.
1 laser station = 10–30 Nm³/h. At $0.50+/Nm³ bottled = $36,000+/year. On-site PSA drops cost to $0.15/Nm³ — saving 60%+.
Bottles run out mid-shift. Every changeover stops production. Continuous generation = your lasers never wait for gas.
Bottle purity varies between suppliers. Inconsistent N₂ causes weld discoloration and rejects. PSA maintains ±0.1% purity 24/7.
Different metals require different nitrogen purity levels for oxidation-free welds. Using the right purity avoids over-spending on unnecessarily high-grade gas.
| Material | Mild Steel | Stainless Steel 304/316 | Aluminum | Titanium |
|---|---|---|---|---|
| Min N2 Purity | 99.5% | 99.9% | 99.99% | 99.999% |
| Flow per Welder | 8-12 Nm3/h | 10-15 Nm3/h | 12-18 Nm3/h | 15-20 Nm3/h |
| Pressure | 0.3-0.6 MPa at the nozzle | |||
| Risk of Insufficient Purity | Surface discoloration | Weld oxidation (black/brown) | Porosity, weak joints | Embrittlement, reject |
Current Setup: 5 fiber laser welders running 16 hours/day on stainless steel. Bottled N2 consumption: 60 Nm3/day.
Bottled Cost: 60 Nm3/day x 300 days x $0.50/Nm3 = $9,000/year per welder × 5 = $45,000/year
PSA Cost: Standard Factory Station (30 Nm3/h) handles 5 welders simultaneously. $0.15/Nm3 x 60 Nm3/day x 300 days = $2,700/year total
Annual Savings: $42,300 — recovery of station cost in under 7 months
Additional Benefits: Zero production stops from bottle changes (~15 min/change x 2/day = 150 lost hours/year)
Shop air enters at 0.8 MPa
Filters + dryer remove moisture & oil
O₂ adsorbed. N₂ passes through at 99.5–99.999%
Pressure-regulated directly to stations
Ideal for 1–2 handheld laser welders or a single cutting machine. Compact, plug-and-play.
View DetailsMost popular. Powers 3–5 laser welding stations simultaneously. Best value for mid-size shops.
View DetailsFor automated robotic cells. Centralized supply for the entire shop floor.
View DetailsLarge-scale automotive parts production. 10+ stations with zero-oxidation welds.
View Details20–60 Nm³/h · 99.9% purity. Most popular choice for 3–5 welding stations.
6 station sizes from small workshop to industrial scale.
71% cost reduction. 8 welding stations. 8-month payback.
Class 0 oil-free air protects your molecular sieve.
What purity? How much flow? Installation time?
Complete specifications. PDF format.