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During laser vaporization, surface temperatures to the boiling point temperature the speed is so fast enough to avoid melting from heat, so some material vaporize into steam disappeared, some materials as ejecta from the bottom of the slit is blown away by auxiliary gas flow. This situation requires very high laser power.

In order to prevent the material vapor condensation on the slotted wall, the thickness of the material must not exceed the diameter of the laser beam. The application process is only suitable for thus melting materials the excluded cases must be avoided. The process actually used in iron-based alloy is a minor field of use.

This process cannot be used, such as wood and ceramic, without melting thus not likely to let steam condense the material. In addition, the material is usually to achieve thicker cut. Laser vaporization, optimal beam depending on the material thickness and beam quality. Laser power and evaporation heat of optimal focus position and only a certain amount of influence. In the case of plate thickness, the maximum cutting speed is inversely proportional to the material of the gasification temperature. The desired laser power density is greater than 108W/cm2, and depending on the material, the cutting depth and beam focus position. In the case of plate thickness, assuming you have enough power, the maximum cutting speed is limited by gas velocity.