What is a Nitrogen Generator Used For?
HANTENCNC‘s’ nitrogen generator is designed to produce high-purity nitrogen gas for industrial applications, particularly in laser welding and cutting.
The core function of nitrogen generator is to isolate oxygen during welding or cutting, preventing oxidation, such as material blackening, and ensuring clean, high-quality results.
Why Use Nitrogen in Laser Welding?
When it comes to laser welding, nitrogen gas plays a crucial role in ensuring clean, strong, and high-quality welds. Here’s why it’s so important:
Prevents Oxidation, Keeps Welds Clean & Strong, Improves Weld Quality:
Oxygen in the air can react with hot metal, causing oxidation, like rust or discoloration. Nitrogen acts like a protective shield, eliminating porosity, discoloration, and splatter, pushing oxygen away so the weld stays smooth and free from defects like bubbles or splatter.
By using nitrogen, the metal stays pure as it cools, resulting in stronger, cleaner, and more professional-looking welds—especially important for precision work in electronics or automotive industries.
Works Perfectly with Laser Welding
Laser welding heats metal extremely fast, making oxidation a big risk. Nitrogen ensures the laser only melts the metal—without burning or weakening it—for flawless results every time.
Cost Savings
On-site generation is cheaper than buying high-purity nitrogen cylinders.
Buying nitrogen cylinders is expensive and inconvenient. A nitrogen generator produces gas on-site, cutting costs and eliminating delivery hassles. You get a continuous supply of high-purity nitrogen—no running out mid-job!
Why Choose Our Nitrogen Generator for Laser Welding?
Our Nitrogen Generator for Laser Welding Machine is designed to provide a stable, high-purity nitrogen supply, enhancing welding quality while reducing operational costs.
Unlike traditional gas cylinders, our system generates nitrogen on-demand, ensuring continuous workflow efficiency and improved safety.
Key Features & Benefits
✅ High Purity (99.99%) – Ensures optimal weld quality by preventing oxidation and improving weldability.
✅ Cost-Effective – Eliminates the need for expensive nitrogen cylinder purchases and deliveries.
✅ On-Demand Production – Generate nitrogen anytime, avoiding delays from gas refills.
✅ Low Maintenance & Long Lifespan – Robust design with minimal upkeep requirements.
✅ Enhanced Safety – No high-pressure gas cylinder handling, reducing workplace risks.
✅ Customizable Solutions – Available in multiple models (1m³/h to 10m³/h) to fit different welding setups.
Technical Highlights
✅ Real-Time Monitoring – Built-in pressure gauges and flow meters for precise control.
✅ Dual-Tower (A/B) System – Ensures continuous nitrogen production with automatic switching.
✅ Smart Control – Programmable time relay for automated operation.
✅ Efficient Filtration – Removes oil and moisture for clean, dry nitrogen output.
Easy Operation & Maintenance
✅ Simple Setup – Connect to compressed air, adjust pressure (0.6-0.8MPa), and start.
✅ Auto-Purge Function – Initial 40-50 min purge ensures high-purity output.
✅ Low Maintenance – Regular filter cleaning ensures long-term performance.
Parameters of Nitrogen Generator for Laser Welding
| Models | Purity | Output (m³/h) | Compatible Laser Welders | Matching Air Compressor | Matching Refrigerated Dryer | Gas Storage Tank |
|---|---|---|---|---|---|---|
| HTN-01 | 99.99% | 1 m³/h | 1000W-3000W/ 1 handheld Laser welder |
7.5KW screw compressor (supports 10 HTN-01 units) | 1.5m³ 3-stage filtration with auto-drain | 100L (Optional) |
| HTN-02 | 99.99% | 2 m³/h | 1000W-3000W/ 2 handheld Laser welders + 1 automatic Laser welder |
7.5KW screw compressor (supports 5 HTN-02 units) | 1.5m³ 3-stage filtration with auto-drain | 100L (Optional) |
| HTN-03 | 99.99% | 3 m³/h | 1000W-3000W/ 3-4 handheld laser welders + 3 automatic laser welders |
7.5KW screw compressor (supports 3 HTN-03 units) | 1.5m³ 3-stage filtration with auto-drain | Standard 300L |
| HTN-05 | 99.99% | 5 m³/h | 1000W-3000W/ 5-6 handheld laser welders + 5 automatic laser welders |
7.5KW screw compressor (supports 2 HTN-05 units) | 1.5m³ 3-stage filtration with auto-drain | Standard 600L |
Recommended Laser Welding Machines
FAQs About Nitrogen Generators for Laser Welding
Nitrogen generators can save costs.
Taking 5 handheld laser welding machines as an example:
Each laser welding machine consumes approximately 16 liters of gas per minute, or about 960 liters per hour (approximately 1 cubic meter).
In daily production, each handheld laser welding machine consumes about one bottle of nitrogen per day. The average price in the domestic market is about 50 yuan per bottle.
Based on 300 working days: 5 laser welding machines × 50 yuan × 300 days = 75,000 yuan/year
The annual gas cost for handheld laser welding machines alone is approximately 75,000 yuan.
If it’s a platform-type automatic welding machine, due to the higher continuous working intensity, one machine requires about 2 bottles of nitrogen per day. Therefore, the annual gas cost for a single machine is approximately 140,000 yuan. If argon is used, the price per bottle is 80-100 yuan, making the cost even higher.
Compared to traditional bottled gas supply methods, using a nitrogen generator can significantly reduce operating costs.
Even considering initial equipment investment and daily electricity costs, customers can still save more than 80% of their costs.
The key to choosing a nitrogen generator is determining the required nitrogen output flow rate. Generally, the nitrogen generator model should be matched to the equipment’s actual gas consumption:
- A nitrogen generator with an output of 1 cubic meter per hour can meet the gas consumption needs of one laser welding machine.
- A nitrogen generator with an output of 2 cubic meters per hour can supply two laser welding machines simultaneously.
- And so on, the nitrogen generator with the largest output can supply up to 5 machines simultaneously.
HANTENCNC’s nitrogen generators are equipped with an ion flow nitrogen analyzer. Testing shows that the nitrogen produced by the equipment achieves a purity of 99.99%. This meets the high requirements of applications such as precision laser welding.
A nitrogen generator cannot be used alone. It must work in conjunction with an air compressor and a refrigerated dryer.
The air compressor provides a continuous supply of air. The refrigerated dryer filters oil and water from the air at low temperatures, then sends the clean air to the nitrogen generator. The nitrogen generator then removes CO₂ and O₂ from the air, retaining only high-purity N₂.
Connection method for the nitrogen generator: Connect the air compressor to the refrigerated dryer, and then connect the nitrogen generator.
When selecting matching equipment:
The air compressor power should be no less than 4.5 kW, and the air tank capacity should be no less than 100 L.
A matching refrigerated dryer and a three-stage filter should be provided. This is to filter out moisture and oil from the compressed air.
Unfiltered air entering the nitrogen generator will affect its lifespan.
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