3 Nm³/h Mini Nitrogen Generator for Welding

Elily’s 3 Nm³/h Mini PSA Nitrogen Generator for Welding supports a complete flow range from 1 Nm³/h to 20 Nm³/h with flexible customization options. The unit effectively isolates oxygen during welding processes, preventing metal oxidation and discoloration to deliver bright, yellow-free, high-quality weld seams. Fully automatic nitrogen production greatly saves operating time and reduces overall production costs.

1. Adjustable High Purity

Nitrogen purity is freely adjustable within the range of 99.99% to 99.999%, meeting different precision welding and manufacturing standards.

2. Flexible Capacity Expansion

Adopting standardized modular design, the equipment supports easy capacity upgrading. Multiple units can be connected in parallel to quickly increase total nitrogen output according to growing production demands.

3. High Efficiency & Low Energy Consumption

Featuring optimized PSA separation efficiency and low compressed air consumption, the unit achieves excellent energy-saving performance. The power consumption is only about 0.42 kWh per cubic meter of produced nitrogen.

4. Neat Structure & Easy Maintenance

An optional protective frame ensures a tidy, aesthetic equipment layout. It facilitates daily cleaning and standardized workshop management, fully satisfying the high cleanliness requirements of electronic manufacturing and precision processing environments.

Working Principle of a Nitrogen Generator

This 3 Nm³/h Mini PSA Nitrogen Generator for welding adopts carbon molecular sieve as the core adsorbent material.

Carbon molecular sieves show a striking difference in adsorption speeds for oxygen and nitrogen: oxygen is adsorbed much faster than nitrogen within a short period. The equipment leverages this property to realize oxygen-nitrogen separation.

The oxygen adsorption capacity of carbon molecular sieves drops along with pressure reduction. Lowering internal pressure triggers desorption, which regenerates the carbon molecular sieve for repeated circulation.

In addition, carbon molecular sieves can simultaneously adsorb carbon dioxide and water vapor, and these impurities can be easily released during the depressurization regeneration process.

Product Detailed Specifications

Applications

The 3 Nm³/h Mini PSA Nitrogen Generator for Welding operates on Pressure Swing Adsorption (PSA) technology. It continuously generates high-purity nitrogen on-site, mainly serving as shielding gas to isolate oxygen and suppress oxidation. This unit boasts extensive industrial applicability across multiple sectors:

- Welding industry: Elevates welding quality and avoids oxidation of welding joints;

- Electronic manufacturing: Creates inert protective atmosphere for SMT assembly and semiconductor packaging;

- Metal processing: Guarantees uniform material density for powder metallurgy and 3D printing;

- Automotive industry: Applied to tire nitrogen filling and component anti-oxidation protection;

- Other fields: Modified atmosphere packaging for food production, explosion-proof purging for chemical workshops, and carrier gas supply for laboratory testing.

This nitrogen generator drastically cuts enterprises’ gas procurement expenses while maintaining stable production processes. It acts as a cost-efficient and high-performance nitrogen supply solution tailored for small and medium-sized production lines.

Customers use Elily’s products on site

Logistics and Delivery:

Every 3 Nm³/h Mini PSA Nitrogen Generator for Welding is fixed on a sturdy solid wood pallet and fully wrapped with stretch film to deliver dual shockproof protection. Thanks to its integrated skid-mounted design, the unit can be put into operation directly after arriving at your plant without extra disassembly work.

For overseas orders, we offer flexible trade terms including FOB and CIF. We supply a full set of export certifications and complete customs clearance documents, enabling smooth and hassle-free import procedures for global clients.

FAQ

Q: What purity standard of nitrogen is required for welding work?

A: 99.99% nitrogen purity meets general welding demands. For precision electronic and lithium battery welding scenarios, we can customize ultra-high purity up to 99.999% to avoid weld oxidation and pore defects.

Q: What standard flow capacities do you provide?

A: Our ready-stock models cover 1, 3, 5, 8, 10, 15 and 20 Nm³/h. Customized flow rates, working pressures and nitrogen purity levels are all available upon request.

Q: What does the 3 Nm³/h model stand for?

A: It means the rated nitrogen output capacity is 3 standard cubic meters per hour (3 Nm³/h). This model is ideal for small and medium welding stations as well as laboratory nitrogen supply.

Q: What inlet compressed air pressure does the machine require?

A: The recommended inlet pressure ranges from 0.7 to 1.0 MPa. An oil-free screw air compressor matched with a refrigerated air dryer is mandatory to guarantee stable input air quality.

Q: Is the nitrogen outlet pressure adjustable?

A: The output nitrogen pressure can be freely adjusted between 0.1 and 0.65 MPa to fit various types of welding equipment seamlessly.

Q: Does this nitrogen generator consume large amounts of electricity?

A: The unit’s self-power consumption only ranges from 100 to 200W (air compressor power excluded). The power consumption per cubic meter of nitrogen produced is around 0.42 kWh, delivering outstanding energy-saving performance.

Q: How much time is needed to obtain qualified nitrogen after startup?

A: Stable qualified nitrogen can be generated within 20 minutes after startup. Once the nitrogen purity stabilizes, the machine can be connected to welding stations directly. Installation operation is simple and requires no professional experience.