C02 laser tubes generate lots of heat when operated, and liquids (usually distilled water) is used to remove the heat from the tube. Running laser tube when water is too hot or too cold can damage and severely decrease its lifespan. But what is the optimal water temperature for CO2 laser tubes?
How Heat Affects CO2 Laser Tubes
In the chart above it can be seen that output power declines rapidly as water temperature increases. If the temperature exceeds 30°C (86°F), the laser’s efficiency declines, and the risk of damage increases. Prolonged exposure to high temperatures may also shorten the lifespan of the laser tube and increase the likelihood of internal component failure.
How low temperatures affect CO2 laser tubes
While overheating is a major concern, excessively low temperatures can also be problematic. If the cooling water falls below 5°C (41°F), condensation can form inside the laser tube, leading to electrical short circuits or potential cracking due to sudden temperature fluctuations. Operating in cold temperatures introduces the risk of water freezing inside the cooling system. Ice formation can lead to blockages, restricted water flow, and potential tube breakage due to frozen liquid expanding inside the tube and causing irreparable damage.
LaserHint: Two of the most common causes of CO2 laser tube failure are overpowering the tube and overheating it.
How to Cool Down a CO2 Laser Tube
To maintain optimal operating temperatures, different cooling methods can be used. The most common cooling methods include:
- Water Chillers: Industrial-grade water chillers maintain a consistent temperature and are ideal for high-powered CO2 lasers.
- Water Pumps with Radiators: A closed-loop system with a radiator and fan can help dissipate heat effectively.
- Even a bucket and a water pump can be helpful if no other alternatives are available.
Additional Tips
- Avoid direct sunlight: Not only will it increase the temperature of the circulating water, but the sunlight will stimulate the algae development inside the water.
- Monitor Temperature: Regularly check water temperature to ensure it stays within the recommended range.
- Regular Maintenance: Clean water lines to prevent blockages and maintain efficient cooling.a
- Controlled Environment: Operate the laser in a room with stable temperature to avoid fluctuations.
LaserHint: Maintaining the right water temperature for a CO2 laser tube is crucial for its performance and longevity. The ideal temperature range is typically between 16°C (61°F) and 24°C (75°F), with deviations posing risks such as overheating, condensation, or freezing. Implementing a reliable cooling system and monitoring the temperature regularly ensures a stable and efficient laser cutting or engraving process.