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Two cutting methods for laser cutting machines

Edit:Xuzhou Yahong CNC Equipment FactoryUpDate:2018-10-24

In most people's view, the type of laser cutting may not be much different, but as a professional laser processing, the processing method of laser CNC cutting machine will be different for different metal material characteristics. Here are a few simple analysis of the differences between the main types of metal laser CNC cutting machines currently available on the market.
First, the laser cutting machine laser cutting method: laser cutting machine laser flame cutting and laser melting cutting is different in the use of oxygen as cutting gas. A chemical reaction is generated to further heat the material by means of the interaction between the oxygen and the heated metal. Due to this effect, for structural steels of the same thickness, the cutting rate obtainable by this method is higher than that of melt cutting.
Second, the laser numerical control cutting machine gasification cutting method: in the laser cutting process of the laser cutting machine , the material is gasified at the slit, in this case requires very high laser power.
In order to avoid condensation of the material vapor onto the slit wall, the thickness of the material must not exceed the diameter of the laser beam. This processing is therefore only suitable for applications where it is necessary to avoid the exclusion of molten material. This processing is actually only used in the small field of use of iron-based alloys. This processing cannot be used for materials such as wood and certain ceramics, which are not melted and are therefore less likely to recondense the material vapor. In addition, these materials typically require thicker cuts. In gasification cutting of lasers, the focus of the superior beam depends on the thickness of the material and the quality of the beam. Laser power and heat of vaporization have only a certain effect on the focus position. In the case where the thickness of the sheet is constant, the large cutting speed is inversely proportional to the vaporization temperature of the material. The required laser power density is greater than 108 W/cm2 and depends on the material, depth of cut and beam focus position. In the case where the thickness of the sheet is constant, assuming that there is sufficient laser power, the large cutting speed is limited by the speed of the gas jet.