Characteristics of Different Laser Cutting Machines

09-11-2020

According to the different laser generator, the laser cutting machine in the market can be roughly divided into three kinds: CO2 laser cutting machine, YAG (solid) laser cutting machine, optical fiber laser cutting machine.


CO2 laser cutting machine

CO2 laser cutting machine can stably cut carbon steel within 20mm, stainless steel within 10mm and aluminum alloy below 8mm.The wavelength of CO2 laser is 10.6um, which is easy to be absorbed by non-metallic materials. It can cut wood, acrylic, PP, plexiglass and other non-metallic materials with high quality. However, the photoelectric conversion rate of CO2 laser is only about 10%.CO2 laser cutting machine is equipped with a nozzle to spray oxygen, compressed air or N2, an inert gas, at the exit of the beam, to improve the cutting speed and smooth and clean the incision.In order to improve the stability and life of power supply, the discharge stability of high power laser should be solved for CO2 gas laser.According to the international safety standards, laser hazards are classified into four levels, and CO2 laser belongs to the level of small hazards.

Main advantages: large power, the general power is between 2000-4000W, can cut less than 25mm of full-size stainless steel, carbon steel and other conventional materials, as well as aluminum plate and less than 60MM of acrylic board, wood material board, PVC board, and in cutting sheet at a high speed.In addition, because the CO2 laser output is continuous laser, its cutting, is the three kinds of laser cutting machine cutting section effect is smooth.

Main market positioning: 6-25 mm thick plate cutting in the processing, mainly for large and medium-sized enterprises and some of the pure external processing laser cutting processing enterprises, but because of its laser maintenance loss is big, the host can't overcome factors such as big power consumption, in recent years, the huge impact by optical fiber laser cutting machine, the market is in a state of obvious atrophy.


YAG (solid) laser cutting machine

YAG solid laser cutting machine has the characteristics of low price, good stability, but low energy efficiency.At present, the output power of the products is mostly below 600W. Due to the small output energy, the products are mainly used for punching, spot welding and cutting of thin plates.Its green laser beam can be used in the case of pulse or continuous wave, with short wavelength, good light concentration for precision machining, especially in the pulse hole machining is effective, but also for cutting, welding and lithography.YAG solid laser cutting machine laser wavelength not easily absorbed by nonmetal, so can't cutting non-metallic materials, and YAG solid laser cutting machine needs to be solved is to enhance the stability of the power and life, namely, to develop large capacity, long life of the pump light excitation light source, such as the semiconductor optical pump can make energy efficiency greatly.

Main advantages: can cut other laser cutting machine can cut the aluminum plate, copper plate as well as most nonferrous metal materials, machine purchase cheap, use of low cost, simple maintenance, most of the key technology has been mastered by domestic companies, accessories price and maintenance cost is low, and the machine operation and maintenance simple, requirements for workers personnel quality is not high.

Main market positioning: cutting below 8mm, mainly for self-use small and medium-sized enterprises and most of the processing requirements are not particularly high sheet metal manufacturing, home appliance manufacturing, kitchen equipment manufacturing, decoration, advertising and other industries users, gradually replace the line cutting, CNC punching machine, water cutting, small power plasma and other traditional processing equipment.


Optical fiber laser cutting machine

Optical fiber laser cutting machine, because it can be transmitted through optical fiber, has an unprecedented increase in flexibility, fewer fault points, convenient maintenance, and extremely fast speed, so it has a great advantage when cutting thin plate within 4mm. However, due to the influence of the wavelength of solid laser, it has a poor quality when cutting thick plate.The wavelength of optical fiber laser laser cutting machine is 1.06um, which is not easy to be absorbed by non-metallic materials, so it cannot cut non-metallic materials.The photoelectric conversion rate of optical fiber laser is as high as 25%. The optical fiber laser has obvious advantages in electricity consumption, supporting cooling system and other aspects.According to international safety standards, laser damage is classified into four levels. Optical fiber laser belongs to the first level due to the large damage to human eyes caused by the length of the wave. For safety reasons, optical fiber laser processing requires a completely closed environment.As a new laser technology, fiber laser cutting machine is far less popular than CO2 laser cutting machine.


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