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Laser Gasification Cutting
Nov 13, 2017

In the process of laser gasification and cutting, the material is vaporized at the slit, which requires very high laser power.

In order to prevent material vapor condensation to the slit wall, the thickness of the material must not greatly exceed the diameter of the laser beam. The processing is therefore only suitable for applications where there is a need to avoid the removal of molten material. The process is actually used only in small areas of iron base alloys.

The processing can not be used, such as wood and some ceramics, those without melting state is thus less likely to let material vapor condensation of materials. In addition, these materials usually reach thicker incisions. In laser gasification cutting, the optimal beam focusing depends on the material thickness and beam quality. The laser power and the gasification heat have only a certain effect on the optimal focus position. In the case of a certain thickness of the plate, the maximum cutting speed is inversely proportional to the gasification temperature of the material. The required laser power density is greater than 108w/cm2 and depends on the material, cutting depth and beam focus position. In the case of a certain thickness of the plate, it is assumed that there is sufficient laser power and the maximum cutting speed is limited by the velocity of the gas jet.


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