If you’re asking how nitrogen generators work, you likely already know their benefits and are thinking about using one in your factory! That’s smart. Different industries have different needs. At Yuhan, we specialize in reliable nitrogen generators for SMT electronics factories (where circuit boards are assembled).
Simply put: A nitrogen generator takes the air we breathe and “cleans” it, leaving mostly pure nitrogen!
Where is the Nitrogen Generator Used in an SMT Factory?
In SMT production lines, nitrogen is crucial for two key processes:
- Reflow Ovens: Where components are soldered onto circuit boards.
- Wave Soldering Machines: Where solder joints are made for larger components.
Here’s why nitrogen matters: it reduces oxidation during soldering, resulting in stronger, shinier, and cleaner solder joints.
That’s why we install the nitrogen generator right beside the reflow oven or wave soldering machine. This provides a stable, on-demand nitrogen supply.
The Nitrogen Generator Doesn’t Work Alone! It Needs Helpers.
The whole system has several key parts, each with its job and location:
- Air Compressor: The “Air Sucker.” Usually placed on the roof or in a dedicated equipment room (it can be noisy and hot, so we keep it away from production).
- Air Dryer & Filters: The “Cleaners.” Installed in a hallway or equipment area, close to the generator. They remove water, oil, and dust from the air.
- Nitrogen Generator: The “Star.” Located on the SMT shop floor, next to the soldering machine. Its job is to separate oxygen and other gases from the air, leaving pure nitrogen.
- Buffer Tank (Gas Tank): The “Storage Unit.” Positioned right beside the generator (1-3 meters away). It holds the produced nitrogen until the soldering machine needs it.
- Control Panel: The “Brain.” Mounted on the generator or a nearby wall. It monitors everything and often allows remote checking.
- Gas Pipes: The “Delivery Team.” Run along the ceiling or walls, carrying nitrogen from the tank to the soldering machines. Typically within 10-30 meters of the generator.
How They Work Together:
- The Air Compressor squeezes normal air.
- The squeezed air gets cleaned and dried by the Dryer & Filters.
- The clean, dry air enters the Nitrogen Generator. Oxygen and other gases are removed, leaving pure nitrogen.
- The pure nitrogen is stored in the Buffer Tank.
- When the soldering machine needs nitrogen, it flows from the tank through the pipes.
- The Control Panel makes sure everything runs smoothly and safely.
This system is compact, reliable, and easy to maintain. (Imagine air going in, clean nitrogen coming out, delivered right where it’s needed!).
What Pipes Deliver the Nitrogen?
Choosing the right pipe material is crucial! It depends on where it’s used, the nitrogen purity needed, your budget, and maintenance plans. Here’s a simple guide:
- Outdoor Pipes: Exposed to weather? Use Stainless Steel (SS304/SS316L) – it’s tough and durable.
- Indoor Pipes: Need it light and easy to install? Use Aluminum Alloy or Special Plastic Tubing (PU/PA).
- Important Safety Notes:
- High-Purity Nitrogen: Needs the cleanest pipes! Must use specially treated stainless steel. Regular steel pipes or rubber hoses will contaminate the gas! ❌
- Low-Purity Nitrogen: Beware of oxygen buildup (e.g., when the system stops)! Never use carbon steel pipes here – it’s a safety risk! ❌
Choosing the right pipes makes your system safer, more reliable, and keeps your nitrogen pure.
Plus, our systems are easy to install! We provide complete, ready-to-go packages – clearly labeled, with basic instructions. Your team can often install it themselves.
In Summary:
Think of a nitrogen generator as an “Air Cleaner + Nitrogen Extractor.” It breathes in normal air, removes oxygen and impurities, and delivers clean nitrogen directly to your SMT soldering equipment. The results?
- Better Soldering Quality: Stronger, shinier joints.
- Lower Costs: Cheaper than bottled gas.
- Simpler Management: Reliable, on-site supply.
Ready to upgrade your factory’s nitrogen supply? Contact us today! We’ll design the perfect system for your SMT line.