PSA Nitrogen Generators Specifically for Laser Welding Machines

What is a PSA nitrogen generator?

A Pressure Swing Adsorption Nitrogen Generator (PSA) is an on-site nitrogen generator that utilizes the principle of pressure swing adsorption (PSA) to enrich and purify nitrogen (N₂) from ambient air to 95%–99.999%. It uses carbon molecular sieve (CMS) as an adsorbent. Through a cycle of high-pressure adsorption and low-pressure desorption, it retains impurities such as oxygen, moisture, and CO₂ within the molecular sieve, while continuously delivering nitrogen.

Advantages of PSA Nitrogen Generator

1. Cost-Efficient: On-site nitrogen generation reduces reliance on external gas suppliers and eliminates the storage and transportation costs of bottled nitrogen, providing a more economical solution for your business.

2. Continuous Operation: Ensures a continuous nitrogen supply even during long production cycles, without the need for interruptions or frequent refills.

3. Energy-Efficient: Typically consumes low power (approximately 25-50W), making it an energy-efficient solution for industries requiring a continuous nitrogen supply.

4. Low Maintenance: Maintenance costs are minimal, with the carbon molecular sieve typically requiring replacement every 5-8 years, depending on usage and air quality.

5. Compact Design: These systems feature a compact design that easily integrates into a workshop or industrial environment without taking up excessive space.

6. Customizable: The system can be adjusted to specific needs, whether it’s varying flow rates, purity levels, or machine settings.

7. Multi-Machine Support: This system is ideal for companies with multiple laser welding machines that require a continuous nitrogen supply.

Equipment Specifications

The DAG-01 (1 Nm³/h) nitrogen generator is designed to provide 99.99% high purity nitrogen, eliminating the need for storage cylinders and can meet the continuous supply of nitrogen to only one laser welding machine.

Nitrogen Generator Main Components

Nitrogen Generator Functional Description

1. Flow Meter: Controls the nitrogen flow rate at the outlet. Note: Appropriately reducing the flow rate can increase the nitrogen concentration.

2. Programmable Time Relay: Manages the operating sequence and pressure relief time of Towers A and B (AB Tanks).

3. Default: Factory-set optimal settings; user adjustment is generally not required.

4. Inlet: Use an 8mm tubing for inlet gas. Requirement: Before connecting to the nitrogen generator, the source gas must be dehydrated and degreased to ensure optimal system performance and lifespan.

5. Nitrogen Outlet: Use a 6mm tubing to output nitrogen. Usage: If the outlet nitrogen meets the required quality standards, it can be used directly.

6. Pressure Gauge: Monitors the inlet pressure before entering the nitrogen generator. Normal range: The pressure should be maintained between 0.6–0.8 MPa.

7. Nitrogen Pressure Gauge: Displays the real-time pressure within the nitrogen storage tank.

8. Tower A and Tower B pressure gauges Function: Monitor the pressure values in the carbon molecular sieve tanks of Tower A and Tower B.

9.Operation: At any time, when one tower is in operation (working state), the other tower will release pressure or maintain low pressure state to regenerate the molecular sieve.

Advantages of nitrogen generators over traditional gas cylinders

Traditional Gas Cylinders

1.High ongoing cost

Cylinder rentals and refills add up quickly.

2.Limited supply

A sudden shortage of gas can interrupt production.

3.Handling risks

Moving and replacing heavy cylinders is labor-intensive and can be
hazardous.

4.Pressure inconsistency

As tanks empty, flow rate and gas purity can fluctuate,affecting welding quality.

Nitrogen Generators

1.Cost-Effective

Compared with buying nitrogen,nitrogen generator can save huge cost as the price of one set nigroten generator is about 1000usd only.

2.Stable and Consistent Output

Provides consistent pressure and purity for high-quality welding.Ensures reliable protection during every weld-without the pressure drop-off common in cylinders.

3.Scalable for Different Production Needs

We offer multiple models based on your production volume and number of laser machines.Whether you’re operating a single unit or a multi-machine welding station, we have the right nitrogen generator to
match.

How to choose the right nitrogen generator for laser welding?

When selecting a nitrogen generator for laser welding, consider the following factors: the nitrogen purity required for your specific welding application; the flow rate that matches the output requirements of the laser welder; the size and space requirements for integrating the generator into existing equipment; the number of laser welders operating simultaneously; and budget and energy efficiency for long-term operational savings.

1 Nm³/h Embedded Nitrogen Generator

DAG-X01 Embedded Nitrogen Generator Introduction

1. Nitrogen Pressure Gauge: Monitors the pressure in the nitrogen tank in real time.

2. Column A and Column B Pressure Gauges: Display the pressure in the carbon molecular sieve tanks A and B in real time.

3. Normal Operation: Only one tank (Column A or B) is in operation at any one time; the other is in pressure relief or low-pressure regeneration.

4. Programmable Time Relay: Controls the operating status and pressure relief time of both tanks A and B. These times are typically preset at the factory and do not require user adjustment.

5. Air Inlet: Use 8mm tubing as the air inlet.

6. Air Quality: To ensure normal operation and prevent system damage, air must be dehydrated and degreased before being connected to the nitrogen generator.

7. Nitrogen Outlet: Use 6mm tubing as the nitrogen outlet. Once the nitrogen meets the required quality standards, it is ready for use and can be directly connected to your system.

Typical Applications

Better Welding with Nitrogen Protection

Nitrogen protection keeps stainless steel pipes safe during welding. ltstops oxidation, avoids holes, and makes the weld smooth and shiny.
This method improves weld quality and makes the pipe strongeragainst rust. lt is easy to use, saves time, and works for all welders.

Frequently Asked Questions

How are nitrogen generators used for laser welding?

In laser welding, nitrogen generators provide high-purity nitrogen to protect the weld area from oxidation during the welding process. Nitrogen creates an inert atmosphere around the weld, ensuring a clean, high-quality, and strong weld. Nitrogen generators use PSA technology to separate nitrogen from air and deliver it at the required purity and flow rate.

What nitrogen purity is required for laser welding?

Laser welding typically requires nitrogen purity between 99.99% and 99.999%. This high purity ensures an oxygen-free weld area, preventing oxidation and ensuring a clean, high-quality weld.

Why should I use a nitrogen generator instead of a cylinder?

Using a nitrogen generator offers many advantages:（1） Cost savings: Avoid the recurring costs of purchasing and refilling cylinders. （2）On-demand supply: Nitrogen is generated at all times, ensuring continuous operation. Improved safety: Reduces the risks of handling and storing high-pressure cylinders. （3）Convenience: Eliminates the need to rely on an external nitrogen supplier, saving time and effort. What nitrogen flow rate is required for laser welding?

The nitrogen flow rate required for laser welding depends on the scale of the welding operation and the specific equipment used. Typical flow rates range from 10 Nm³/h to 500 Nm³/h, with customization options available to meet specific needs.

What is the typical lifespan of a nitrogen generator?

A well-maintained nitrogen generator can last 10-15 years or more, depending on the model and usage. Regular maintenance, such as changing filters and monitoring molecular sieves, ensures long-term reliability and performance.

Can I customize a nitrogen generator for my specific welding needs?

Yes, nitrogen generators are highly customizable. Purity, flow rate, and pressure can be tailored to meet the needs of different industries and welding applications, ensuring optimal system performance.

What maintenance is required for a nitrogen generator?

Nitrogen generators require minimal maintenance. Routine maintenance includes: replacing filters as needed; inspecting and cleaning components such as valves and instruments; and periodically replacing carbon molecular sieves (in PSA systems). Most maintenance tasks are simple and can be performed by in-house personnel with minimal training.

What are the advantages of nitrogen generators over traditional nitrogen supply methods?

（1）Cost-Effective: Reduces reliance on expensive nitrogen cylinders and transportation costs. （2）Convenient: Provides a continuous on-site nitrogen supply, ensuring continuous operation. （3）Safe: Eliminates the need to transport and store high-pressure cylinders, reducing the risk of accidents. （4）Environmentally Friendly: Nitrogen is generated on-site, resulting in no emissions or waste.

Service & Commitment

After-Sale

We provide a 1-3 year warranty and lifetime maintenance for our products. During the warranty period, any functional defects (excluding artificial or force majeure factors) can be repaired or replaced free of charge (except for wearing parts). After the warranty period, we will charge for the workpiece based on the actual situation.

Quality Control

A highly skilled and rigorous quality inspection team is employed during the material procurement and production.

Our quality control strictly tests 100% of all finished machines we deliver to engineering departments.

We will offer the customer detailed machine pictures and test videos before delivery.

OEM Service

Thanks to our extensive experience, custom and OEM orders are warmly welcomed. All OEM services are free. Customers only need to provide us with their logo drawing, functional requirements, colours, etc.

There is no minimum order quantity required.

Privacy

Your personally identifiable information (such as your name, address, email address, banking information, etc.) will not be disclosed or shared with any third party.

All inquiries, questions, or requests for assistance will be responded to within 24 hours, even during holidays. If you have any urgent questions, please call us.

Terms Of Payment

A 30% T/T down payment is required, and the balance should be paid before shipment.

Other payment terms are PayPal, Western Union, etc.

Document Support

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