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Laser cutting method:
Apr 13, 2018

Cutting requires that the laser beam be focused through a lens at a small focal point, typically 25-100 μm for the fine cut, and 100 μm to 300 μm for the thicker material.

The gas is blown out of a coaxial nozzle around the focused laser beam, which keeps the optics clean and blows away the liquefied or vaporized material from the cut to improve cutting quality and speed.

Gases such as oxygen and air are used to improve the cutting of iron alloys and cellulosic materials. Air is often used for plastic and fiber materials.

High-pressure inert gas is used to cut some of the metal so that the cutting edge is not oxidized and free of debris.