4. Assist Gas for Cutting
During the laser cutting process, a laser is used as a heat source to melt or vaporize materials. To cut
the materials with a high-quality edge, an assist gas blows through a cutting nozzle on the laser head.
The right assist gas can improve the edge quality and can increase the cutting speeds substantially for
certain materials.
Gas Purity Pressure
Nitrogen (N
2
)
≥ 99.99% 10-20 bar
Oxygen (O
2
)
≥ 99.99% 2-10 bar
Compressed Air Water free, oil free 10-20 bar
IMPORTANT
If compressed air is used as the assist gas, make sure it is WATER FREE AND OIL FREE.
Otherwise, the protective lens in the laser head will get dirty and wet, and will be broken by the
laser while cutting.
5. Operating Environment
The EV-30 laser system should be operated in an environment with appropriate ambient temperature
and humidity.
Ambient Temperature Humidity
10-40 °C (50-104 °F) 10-80%
IMPORTANT
The laser system must not operate at temperatures below the respective ambient dew point.
IMPORTANT
Use heating equipment to keep the ambient temperature of the working area where the laser is
located above 0°C (32°F) if there is no antifreeze in cooling water. Generally, it is more
appropriate to set the temperature above 5°C (41°F).
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