Introduction To Laser Cutting Machine
High quality laser cutting machine is the laser emitted from the laser, through the optical path system, focused into a high power density laser beam. The laser beam shines on the surface of the workpiece, making the workpiece reach the melting point or boiling point, while the high-pressure gas coaxial with the beam blows away the molten or gasified metal.
With the movement of the relative position of the beam and the workpiece, the material will eventually form a slit, so as to achieve the purpose of cutting. Laser cutting processing is to replace the traditional mechanical knife with invisible beam, with high precision, fast cutting, not limited to the cutting pattern limit, automatic layout to save material, smooth incision, low processing cost, will gradually improve or replace the traditional metal cutting process equipment. The mechanical part of the laser cutter head has no contact with the workpiece, and will not scratch the surface of the workpiece during work; Laser cutting speed is fast, the incision is smooth and smooth, generally no follow-up processing; The cutting heat affected zone is small, the plate deformation is small, the cutting slit is narrow; No mechanical stress, no shear burr; High machining precision, good repeatability, no damage to the material surface; CNC programming, can process any planar graph, can cut the whole board with a large width, no need to open the mold, economy and time saving. 
Compared with the traditional oxy-acetylane, plasma cutting process, laser cutting speed, high precision, narrow cutting slit, small heat affected zone, good verticality of cutting edge, smooth cutting edge, while laser cutting materials, including carbon steel, stainless steel, alloy steel, wood, plastic, rubber, cloth, quartz, ceramics, glass, composite materials, etc. With the rapid development of market economy and the rapid change of science and technology, laser cutting technology has been widely used in automobile, machinery, electric power, hardware and electrical appliances and other fields. In recent years, laser cutting technology is developing at an unprecedented rate, with a growth rate of 15%~20% every year. Since 1985, China has been growing at a rate of nearly 25% per year. At present, the overall level of laser cutting technology in our country compared with advanced countries there is a big gap, therefore, the laser cutting technology in the domestic market has broad prospects for development and huge application space. 
High quality laser cutting machine in the cutting process, the beam is focused into a small focus by the lens of the cutting head, so that the focus reaches a high power density, where the cutting head is fixed on the z axis. At this time, the heat input of the beam far exceeds the part of the heat reflected, conducted or diffused by the material, and the material is quickly heated to the melting and vaporization temperature. At the same time, a high-speed air stream blows out the melted and vaporized material from the coaxial or non-coaxial side, forming the hole of the material cutting, and the speed is fast. With the relative movement of the focus and the material, the hole forms a continuous slit with a very narrow width to complete the cutting of the material.
December 15, 2022
