Laser cutting is the use of high power density laser beam scanning material surface, in a very short time to heat the material to thousands of degrees Celsius, so that the material melting or gasification, and then high pressure gas will melt or gasification material from the slit blown away, to achieve the purpose of cutting material. Laser cutting, due to the invisible beam of light instead of the traditional mechanical knife, laser head of the mechanical part of the work without contact, in the work will not cause scratches on the working surface; Laser cutting speed, smooth incision, generally without subsequent processing; Small cutting heat affected zone, small plate deformation, narrow slit (0.1mm~0.3mm); Incision without mechanical stress, no shear burr; High machining accuracy, good repeatability, no damage to the surface of the material; CNC programming, can process arbitrary plane graph, can cut the whole board with a large format, no need to open mold, economical and time-saving.The laser cutting process is diverse, melting cutting is to make the incident laser beam power density exceeds a certain value, so that the light beam irradiation point of the material began to evaporate, the formation of holes; Vaporization cutting is the use of high power density laser beam heating, avoid heat conduction caused by melting, so part of the material vaporization into steam disappear; Oxidation melting cutting is the material under the irradiation of laser beam is ignited, and oxygen has a fierce chemical reaction and produce another heat source; For brittle materials that are easy to be damaged by heat, high speed and controllable cutting is carried out by laser beam heating, which causes large thermal gradient and serious mechanical deformation in the region, leading to the formation of cracks in the material, which is called controlled fracture cutting.