Compared with traditional acetylene, plasma and other cutting processes, the laser cutting speed is fast, the slit is narrow, the heat affected zone is small, the edge of the slit is good, the trimming is smooth, and there are many kinds of materials that can be laser cut, including carbon steel. , stainless steel, alloy steel, wood, plastic, rubber, cloth, quartz, ceramics, glass, composite materials, etc. With the rapid development of the market economy and the rapid development of science and technology, laser cutting technology has been widely used in the fields of automobiles, machinery, electric power, hardware and electrical appliances. In recent years, laser cutting technology is growing at an unprecedented rate, growing at a rate of 15% to 20% every year. Since 1985, China has grown at a rate of nearly 25% per year. At present, the overall level of laser cutting technology in China still has a big gap compared with advanced countries. Therefore, laser cutting technology in the domestic market has broad development prospects and huge application space.

A laser is a kind of light that, like other natural light, is produced by the transition of atoms (molecules or ions, etc.). However, unlike normal light, the laser relies on spontaneous emission only in the initial very short time. The subsequent process is completely determined by the excitation radiation. Therefore, the laser has a very pure color, almost no divergent directionality, and extremely high luminous intensity. And high coherence.

Laser cutting is achieved by applying high power density energy generated by laser focusing. Under the control of the computer, the laser is discharged by pulse, thereby outputting a controlled repeated high-frequency pulsed laser to form a beam of a certain frequency and a certain pulse width, and the pulsed laser beam is transmitted and reflected through the optical path and focused by the focusing lens group. On the surface of the processed object, a subtle, high-energy-density spot is formed, and the focal spot is located near the surface to be processed to melt or vaporize the material to be processed at an instant high temperature. Each high-energy laser pulse instantly sputters a small hole in the surface of the object. Under computer control, the laser processing head and the material to be processed are continuously moved relative to each other according to the pre-drawn pattern, so that the object is processed into The shape you want.

The process parameters (cutting speed, laser power, gas pressure, etc.) and the trajectory of the slit are controlled by the numerical control system, and the slag at the slit is blown off by the auxiliary gas of a certain pressure.