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Comprehensive analysis of the advantages, limitations and disadvantages of fiber laser cutting machines

Views:30     Author:Durmapress     Publish Time: 2020-07-06      Origin:Durmapress Inquire

Comprehensive analysis of the advantages, limitations and disadvantages of fiber laser cutting machines

The following briefly introduces the characteristics of the three Fiber laser cutting machines:


The first type YAG solid laser cutting machine


YAG solid laser cutting machine has the characteristics of low price and good stability, but the energy efficiency is generally less than 3%. The output power of the current products is mostly below 800W. Due to the small output energy, it is mainly used for punching and thin plate cutting. Its green laser beam can be applied in the case of pulse or continuous wave. It has a short wavelength and good light concentration. It is suitable for precision machining, especially for hole machining under pulse. It can also be used for cutting, welding and lithography. The laser wavelength of YAG solid laser cutting machine is not easy to be absorbed by non-metal, so it can not cut non-metallic materials, and what YAG solid laser cutting machine needs to solve is to improve the stability and life of the power supply, that is, to develop a large-capacity, long-life optical pump Excitation light sources, such as the use of semiconductor optical pumps, can greatly increase energy efficiency.


Main advantages: It can cut aluminum, copper and most non-ferrous metal materials that other laser cutting machines can not cut. The machine is cheap to purchase, low in use cost, and simple to maintain. Most of the key technologies have been mastered by domestic enterprises. The cost is low, and the operation and maintenance of the machine are simple, and the quality of workers is not high.


Main disadvantages and shortcomings: can only cut materials below 8mm, and the cutting efficiency is quite low


Main market positioning: Cutting below 8mm, mainly for self-use SMEs and most sheet metal manufacturing, home appliance manufacturing, kitchenware manufacturing, decoration, advertising and other industry users who are not particularly high in processing requirements, gradually replacing wire cutting, Durmapress CNC punching machines, Traditional processing equipment such as water cutting and low power plasma.


The second type fiber laser cutting machine


The fiber laser cutting machine has an unprecedented degree of flexibility because it can be transmitted through optical fibers, with fewer fault points, easy maintenance, and fast speed. Therefore, the fiber cutting machine has great advantages when cutting thin plates within 4mm, but it is affected by the wavelength of the solid laser It is of poor quality when cutting thick plates. The wavelength of the fiber laser cutting machine is 1.06um, which is not easy to be absorbed by non-metal, so it cannot cut non-metal materials. The photoelectric conversion rate of fiber laser is as high as 25% or more, and the advantages of fiber laser in power consumption and supporting cooling system are quite obvious. According to international safety standards, the laser hazard level is divided into four levels. Fiber lasers are the most harmful to the human body due to the short wavelength and are the most harmful. For safety reasons, fiber laser processing requires a fully enclosed environment.


Main advantages: high photoelectric conversion rate, low power consumption, can cut stainless steel plates and carbon steel plates within 12MM, which is the fastest laser cutting machine for cutting thin plates among the three machines, with small slits, good spot quality, and can be used for fine Cut.


Main disadvantages and shortcomings: At present, most of the core key technologies of fiber lasers are in the hands of one or two manufacturers in Europe and the United States, so most of the machines are expensive, most of the machines are more than 1.5 million, and the low-power ones are basically at About 500,000 yuan, because the fiber slit is very thin when cutting, and the gas consumption is huge (especially when cutting with nitrogen). In addition, the fiber laser cutting machine is difficult or even impossible to cut high reflective materials such as aluminum and copper plates, and the speed when cutting thick plates very slow.


Main market positioning: cutting below 12mm, especially the high-precision processing of thin plates, mainly aimed at manufacturers with high requirements for accuracy and efficiency. It is estimated that with the emergence of 5000W and above lasers, fiber laser cutting machines will eventually replace CO2 high-power lasers. Most markets for fiber laser cutter machinery.


The third type of CO2 laser cutting machine


CO2 laser cutting machine can stably cut carbon steel within 20mm, stainless steel within 10mm, and aluminum alloy under 8mm. The CO2 laser has a wavelength of 10.6um, which is relatively easy to be absorbed by non-metals. It can cut high-quality non-metal materials such as wood, acrylic, PP, and plexiglass, but the photoelectric conversion rate of CO2 lasers is only about 10%. The CO2 laser cutting machine is equipped with a nozzle for blowing oxygen, compressed air or inert gas N2 at the beam exit to improve the cutting speed and the smoothness of the cut. In order to improve the stability and life of the power supply, the CO2 gas laser must solve the discharge stability of the high-power laser. According to international safety standards, the laser hazard level is divided into four levels, and the CO2 laser belongs to the least hazardous level.


Main advantages: high power, general power is between 2000-4000W, can cut full-size stainless steel, carbon steel and other conventional materials within 25 mm, as well as aluminum plates within 4 mm and acrylic plates within 60MM, wooden material plates, PVC plates , And the cutting speed is very fast. In addition, because the CO2 laser output is a continuous laser, when cutting, it is the smoothest and best cutting effect of the three laser cutting machine China.


Main disadvantages and shortcomings: Because most of the core key technologies of CO2 lasers are in the hands of European and American manufacturers, most of the machines are expensive, and most of the machines cost more than 2 million, and the related maintenance costs for accessories and consumables are extremely high. The operating cost is very high, and the gas consumption during cutting is very large.


Main market positioning: 6-25 mm thick plate cutting processing, mainly for large and medium-sized enterprises and some DURMA laser cutting processing enterprises that are purely externally processed, but due to the large maintenance loss of the laser and the large power consumption of the mainframe, the factors that cannot be overcome, in recent years Since its market has been greatly impacted by solid-state CNC fiber laser cutting Machine and fiber laser cutting machines, the market is in a state of apparent shrinkage. It is estimated that after further development of future lasers, CO2 laser cutting machines will eventually be replaced by fiber laser cutting machine supplier .


In the process of evaluating laser cutting machine supplier , customers should choose different Durma cutting equipment according to their needs and cutting purposes.


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