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Laser Cutting Technology
Nov 13, 2017

Several key technologies of laser cutting machine are integrated technology of light, machine and electricity integration.

In laser cutting machine, the parameters of laser beam, the performance and accuracy of the machine and the numerical control system directly affect the efficiency and quality of laser cutting. Especially for the cutting precision or thickness of the larger parts, must master and solve the following key technologies: 1, focus position control technology: Laser cutting the advantages of the beam energy density is high, general 10w/cm2. Since the energy density is proportional to the 4/ΠD2, the focal spot diameter is as small as possible to produce a narrow slit, while the focal spot diameter is proportional to the focal depth of the lens. The smaller the focal depth of focus lens, the smaller the focal spot diameter. But the cutting has the splash, the lens is too close to the workpiece to be possible to damage the lens, therefore general high-power CO2 laser cutting machine industrial application widely uses 5〃~7.5〃"(127~190mm) focal length. The actual focal spot diameter is between 0.1~0.4mm. For high quality cutting, the effective depth is also related to the lens diameter and the cut material. For example, with 5〃 lens cut carbon steel, focal depth of +2% range, that is around 5mm. Therefore, it is important to control the focus relative to the position of the surface of the cut material. Concern to the cutting quality, cutting speed and other factors, in principle, 6mm of metal materials, focus on the surface; 6mm of carbon steel, focusing on the surface; 6mm stainless steel, focusing on the surface. The specific size is determined by the experiment.


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