CO2 laser cooling
CO2 laser cooling
CO2 laser cooling directly affects tube power, stability and service life. Even a good laser tube quickly loses efficiency if it works at too high a temperature or with unstable water flow.
Types of chillers
CO2 lasers are usually water-cooled using active cooling units, or chillers. There are two main categories: units that cool down to ambient temperature and units that can cool below ambient temperature.
Simpler coolers or water circulation systems are suitable for lighter loads, but intensive work requires stable active cooling with temperature control.
Why is temperature so important?
- Too high a temperature reduces laser power and stability.
- Improper cooling shortens CO2 tube lifetime.
- Temperature fluctuations can change cutting or engraving results.
- Weak water flow can cause local overheating.
- Unmaintained water can contaminate the system and reduce cooling efficiency.
What should be maintained?
Water temperature, flow, hose condition, filters, chiller ventilation and liquid cleanliness should be checked regularly. It is also important to make sure there are no air bubbles in the system and that the chiller has enough reserve for the specific laser power.
If the laser is used for long shifts, the cooling system should be treated as one of the most important parts of the machine, not as an optional accessory.
Practical advice
If laser power starts dropping after some time from the beginning of work, one of the first checks should be cooling temperature and water flow.