The laser cutting machine is used to shoot the laser from the laser through the optical path system and focus it on the high power density laser. The laser irradiates the surface of the workpiece to make the workpiece reach the melting point or boiling point. The high-pressure gas is coaxial with the beam to melt or vaporize the metal.
Due to the relative position movement of the light beam on the workpiece, the material finally forms a tangent, thus completing the cutting.
Cutting with invisible light beam instead of traditional mechanical knife has the characteristics of fast cutting speed, high precision, not limited by cutting pattern, material saving, smooth incision, low processing cost, and can gradually improve or replace the traditional metal cutting process equipment. The mechanical part of the laser knife is not in contact with the workpiece, so it will not scratch the surface of the workpiece during operation; The laser cutting speed is fast, the incision is smooth and flat, and generally no subsequent processing is required; The cutting heat affected zone is small, the sheet metal deformation is small, and the cutting seam is narrow (0.1mm~0.3mm); The notch shall be free of mechanical stress and shearing burr; High machining precision, good repeatability, no damage to the material surface; NC programming, can process any plan, can carry out large format whole plate cutting, do not need to open the mold, and save time economically.
In the process of sheet metal processing, laser processing technology plays a very important role. It can improve the labor productivity of sheet metal processing and promote the development of sheet metal technology. With high flexibility, it can greatly shorten the machining cycle, improve the cutting speed, improve the production efficiency, improve the machining accuracy and speed up the product development. These advantages have attracted the attention of many manufacturers.
It is a technological revolution in sheet metal processing and a "processing center" in sheet metal processing; Laser cutting machine has the characteristics of elasticity, fast cutting speed, high elasticity, high production efficiency, short product production cycle, and has won a wide range of markets for customers. Its technical life is long. Most foreign plates with a thickness of more than 2mm are laser cutting machines. Many foreign experts believe that the next 30-40 years will be a golden age for the development of laser processing technology.
Generally speaking, laser cutting is recommended for the cutting of buildings with carbon steel plates less than 12mm and stainless steel plates less than 10mm. No cutting force, no deformation in processing: no tool wear, good material adaptability: whether simple or complex parts, laser can be used for precision, fast and accurate cutting at one time, with narrow cutting seam. It has the advantages of good cutting quality, high automation, simple operation, low labor intensity and no pollution. It can realize cutting, nesting, improve material utilization, low production cost and good economic benefits.
There are many factors to consider when selecting a laser cutting machine. In addition to considering the maximum size of the workpiece to be processed, the material, the maximum thickness to be cut and the size of the raw material, the future development direction needs to be considered. For example, the maximum size of the workpiece to be processed after the process transformation and the size of the material provided by the steel market are aimed at which of their own products is the most economical, upper and lower materials, etc.