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What is laser cutting and how does it work?
2019-12-27

Laser cutting uses a high-power density laser beam to irradiate the material being cut, which quickly heats the material to the vaporization temperature and evaporates to form holes. As the beam moves the material, the holes continuously form a narrow width (such as about 0.1mm). Cut the seam to complete the cutting of the material.


Properties


High efficiencyon cutting- Due to the transmission characteristics of lasers, laser cutting machines are generally equipped with multiple numerically controlled worktables, and the entire cutting process can be fully numerically controlled. During operation, just changing the NC program can be used to cut different shapes of parts, both 2D and 3D.

Many types of cutting materials- Compared with oxyacetylene cutting and plasma cutting, there are many types of laser cutting materials, including metal, non-metal, metal-based and non-metal-based composite materials, leather, wood and fibers. However, for different materials, due to their own thermophysical properties and laser absorptivity, they show different laser cutting adaptability.

Non-contact cutting-The cutting torch has no contact with the workpiece during laser cutting, and there is no tool wear. When processing different shapes of parts, there is no need to change the "tool", only the output parameters of the laser need to be changed. The laser cutting process has low noise, low vibration and no pollution.



Applications:


Sheet metal processing- laser cutting has the advantages of high precision, high speed, especially flexible processing (no need to open the mold), etc., and has become the development direction of sheet metal processing technology. The high cost performance of laser is unique in the sheet metal industry and is greatly favored by sheet metal enterprises. Laser equipment has become a strong guarantee for business orders of sheet metal processing centers.

Automobile manufacture- Laser cutting is an advanced manufacturing method. In developed European and American industrial countries, 50% to 70% of auto parts are completed by laser processing. The automobile industry mainly uses laser welding. And laser cutting are the main processing methods, including plane cutting and three-dimensional cutting.

Non-metal materials- Laser cutting has also been widely used in the field of non-metal materials. Not only can it cut materials with high hardness and brittleness, such as silicon nitride, ceramics, quartz, etc,it can also cut and process flexible materials, such as cloth, paper, plastic plates, rubber, etc. If clothing is cut by laser, it can save clothing 10 % ~ 12%, it can improve the efficiency by more than 3 times.

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