1, the technical characteristics of laser cutting machine tools and other cutting methods compared to laser cutting processing has the following advantages:

　　Is a high energy density controllability of good contactless processing; cutting speed is high. Cutting steel parts when its cutting efficiency by 8 to 20 times, the heat-affected zone is very small, the workpiece deformation is minimal, the cutting edge roughness is very small, without the need for finishing, cutting does not produce a melting tumor, no need to deburr, the slit is very narrow, and the size of the constant, you can achieve a strict fit tolerance. It can make high-precision holes in high hardness and high brittleness materials, and its processing efficiency is l2~l5 times of the efficiency of EDM, 200 times of the efficiency of mechanical drilling, and it also facilitates the processing of micro-holes, group holes and shaped holes. Material saving. Save material l5% ~ 30%, can significantly reduce production costs, and high processing accuracy, product quality is stable and reliable.

2, laser cutting processing range

    ① laser cutting processing a wide range of metal materials can be cut, such as mild steel, tool steel, stainless steel, aluminum and aluminum alloys, etc., non-metallic materials, such as cardboard, wood, leather, glass, ceramics and so on.

　　② Laser cutting processing can not only process different kinds of materials, but also can process different thicknesses of materials from thin plate to thick plate.

　　③Laser cutting processing can also process different shapes of parts, whether the shape is simple or complex.

　　3, laser and material interaction laser and material interaction process is divided into the following stages:

　　A, no heat or basic optical stage. This stage can not be used for general thermal processing due to very low absorption into heat.

　　B. Heating below the phase change point (T

　　C. Heating above the phase change point but below the melting point (Ts

　　D, above the melting point, but below the vaporization point heating (Tm)

　　E. Heating above the vaporization point - plasma phenomenon. This stage of the laser makes the material vaporized, the formation of plasma.

    4, the cutting process of the laser beam of high power density, so that the material to be cut is rapidly heated, melted, or even partially or completely vaporized. At the same time, with the laser beam coaxial jet airflow and these materials from the cut seam blowing out. The quality of the kerf and the cutting edge depends not only on the design of the machine, but also on the feed of the focusing device or the feed of the workpiece, or a combination of both.

    5 Focus Position The focus may be located above, on or below the surface of the material to be cut, depending on the requirements of the material and thickness. The position of the focus can be adjusted automatically and the automatic focus adjustment system ensures that the position of the focus remains constant over the entire working range.