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WHAT YOU CAN MAKE
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PROTECTIVE WINDOW REPLACEMENT
FIBER LASER CUTTING FAQ
Yes, if the window has only removable dust or light contamination and no permanent damage. Follow the cleaning procedure approved by the window or cutting-head manufacturer, then inspect the surface again. If burn marks, cracks, pits, or unacceptable coating damage remain, replace the window according to the manufacturer's criteria.
Not necessarily. The severity, location, and extent of the scratch matter. However, do not attempt to polish or sand the optical surface. Follow the manufacturer's inspection criteria to determine whether the window can remain in service or needs replacement.
Yes. Contamination or damage to the protective window can affect laser transmission and contribute to inconsistent cutting performance. However, rough edges, excessive dross, unstable piercing, and incomplete cuts can also result from nozzle problems, incorrect focus, assist-gas issues, or unsuitable cutting parameters.
Follow the inspection schedule in your machine or cutting-head manual. Inspect the window sooner if cutting quality changes unexpectedly, visible contamination appears, or unusual spatter occurs. The appropriate inspection frequency depends on the operating conditions and the manufacturer's recommendations.
Repeated burn marks may indicate recurring contamination, excessive spatter, installation or sealing issues, or problems with the cutting process. Check the nozzle, piercing parameters, assist-gas supply, material surface, and window installation. If the problem persists, consult the machine or cutting-head manufacturer's service team rather than repeatedly replacing the window without investigating the cause.
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