In recent years, laser processing technology has developed rapidly, and its application is more and more extensive. Therefore, lasers are called “universal processing tools” and “universal processing means for future manufacturing systems”. Enterprises in industrial countries widely use laser processing technology, and their production technology is also undergoing qualitative changes. Laser cutting technology is the main application of laser technology in industry. It speeds up the transformation of traditional processing industry and provides a new way for modern industrial processing industry. It has become a widely used laser processing method in the industrial processing field, accounting for more than 70% of the entire laser processing industry.
The laser cutting machine irradiates the workpiece with a focused high power density laser beam. When the laser power density exceeds the laser threshold, both the energy of the laser beam and the additional chemical reaction heat energy of the active gas assisted cutting process are absorbed by the material, which leads to the temperature rise of the laser action point. It rises sharply, and after reaching the boiling point, the material begins to vaporize and form holes. With the relative movement of the beam and the workpiece, the material will eventually form a cutting joint, and the sediment on the cutting joint will be blown away through the auxiliary gas.
It has the advantages of wide cutting range, fast cutting speed, narrow seam, good cutting quality, small heating area, large flexibility of additives, etc. It has been widely used in modern industry. Laser cutting technology has also become one of the mature technologies in laser processing technology. Compared with other lights, laser has the following characteristics: high brightness, high directivity, high monochromaticity and high coherence. Because of these four characteristics, lasers are widely used, bringing the following valuable characteristics that traditional processing does not have:
Advantages of laser cutting machine?
(1) As non-contact processing is adopted, and the energy and moving speed of the laser beam can be adjusted, a variety of processing can be realized.
(2) It can be used to process various metals and nonmetals, especially materials with high hardness, high brittleness and high melting point.
(3) In the process of laser processing, there is no “tool” wear and no “cutting force” acting on the workpiece.
(4) Laser processing has small heat affected zone, small thermal deformation and less subsequent processing.
(5) Laser can process various workpieces in closed containers through transparent media.
(6) The laser is easy to guide. By focusing, you can change all directions, and it is easy to process complex workpieces with the CNC system. Therefore, laser cutting is a very flexible cutting method.
(7) Laser processing has high production efficiency, stable and reliable processing quality, and significant economic and social benefits.
