Metal laser cutting machine is a laser beam focused into a very small spot with a minimum diameter (less than 0.1mm), so that the focus can achieve a very high power density (more than 106W/cm2). At this time, the heat input of the light beam (converted from light energy) is far more than the part reflected, conducted or diffused by the material, the material is quickly heated to the vaporization temperature, evaporation forms holes. With the relative linear movement of the beam and the material, the hole is continuously formed into a slit with a very narrow width (such as about 0.1mm). The effect of cutting heat is very small, and there is basically no workpiece deformation. The cutting process also adds the auxiliary gas suitable for the material to be cut. When steel is cut, oxygen is used as auxiliary gas to produce exothermic chemical reaction oxidizing material with dissolved metal, and at the same time to help blow away the slag in the slit. Cutting polypropylene a type of plastic using compressed air, cotton, paper and other flammable materials cutting using inert gas. The auxiliary gas entering the nozzle can also cool the focusing lens and prevent smoke from entering the lens holder and contaminating the lens and causing the lens to overheat. It has the following processing characteristics: ① Strong processing flexibility of laser and cutting machine Metal laser cutting machine without mold and auxiliary consumables preparation, whether it is a single product, a variety of small batch products or different graphics processing requirements, can be processed immediately. ② Advanced processing technology Metal laser cutting machine laser focused spot diameter is very small, fine processing, the heat affected area of processing materials is small, the workpiece is basically not deformed. Laser beam can be used to process the interlayer or sealed container through transparent material, and can be focused on wavelength high energy spot for micro processing, which can complete some processes that cannot be achieved by conventional methods. ③ Low processing cost, simple operation Laser processing does not need to add other work and supplies, as long as the laser works normally, can be continuous processing for a long time. Processing speed, low cost, can be controlled by the computer to achieve automatic production, simple operation and convenient change. ④ Meet the requirements of environmental protection Metal laser cutting machine laser processing non-toxic, harmless, clean health, in line with the production of environmental protection requirements, to avoid corrosion, screen printing and other processes caused by the restrictions.