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Details you shouldn’t miss before buying a co2 laser cutting machine!

In recent years, due to the continuous expansion of laser application fields, more and more manufacturers have begun to produce co2 laser cutting machines and continue to improve and upgrade them to meet their market needs. So, as consumers, how do we choose the machine that is right for us, because whether it is choosing a machine from the job done before buying it or on site, there are some minefields that can be avoided. This article will explain to you how to choose a machine from different perspectives. I hope that helps you.


Since the promotion of laser cutting machines in the Chinese market, the annual output has reached tens of thousands of units. Price competition in laser cutting is bound to be fierce. If a company wants to survive, the only way to do that is to provide processing efficiency and reduce usage costs. We need to compare these various cutting machines, such as cutting accuracy, cutting efficiency, maintenance cost, service life, etc.


1. Cutting accuracy


Cutting accuracy is the basis for selecting machine tools. It refers to the contour accuracy of the cut workpiece, not the static accuracy of the sample label. The difference between a machine tool and a poor machine tool is whether the accuracy of high-speed cutting parts changes significantly, and whether the uniformity of the workpiece changes greatly when cutting at different positions.



2. Cutting efficiency


Cutting efficiency is the core profitability indicator for evaluating machines. Cutting efficiency refers to the time it takes to cut the workpiece. It’s not just about cutting speed. It is known that, among other parameters, only the cutting time cannot be forged.



3 Maintenance costs


At present, the largest maintenance cost of laser cutting machines mainly comes from the maintenance cost of the laser, so it is very important to choose the appropriate laser.



4. Service life


Service life is a core cost-saving metric for evaluating machines. The longer the service life of the machine tool, the lower the depreciation cost of the equipment. The main factors that determine the service life of the machine are as follows. The first is the rigidity of the machine, that is, the heavier the tonnage, the better the rigidity. The second is the machine accessories, especially the brand and quality of the transmission device. The third is the manufacturing level, technology accumulation and inheritance of technical experience.




Advantages and Disadvantages of CO2 Laser Cutting Machine


advantage:

1. Good cutting quality. Narrow kerf width (usually 0.1-0.5mm), high precision (normal hole center distance error 0.1--0.4mm, outline size error 0.1-0.5mm), kerf surface roughness (usually Ra 12.5-25μm), kerf Generally no processing and welding is required.


2. Quick cutting. Small heat affected zone and small deformation


3. Clean, safe and pollution-free. The operator's working environment is greatly improved. Of course, in terms of accuracy and cut surface roughness, CO2 laser cutting cannot exceed electrical machining; in terms of cutting thickness, it is difficult to achieve the level of flame and plasma cutting. However, the above-mentioned significant advantages are enough to prove that CO2 laser cutting has and is replacing some traditional cutting process methods, especially cutting various non-metallic materials. It is an advanced processing method that is developing rapidly and widely used.


shortcoming:

The conversion efficiency of CO2 laser is very high, but the maximum does not exceed 40%, which means that more than 60% of the energy will be converted into heat energy of the gas, and the temperature will increase. The increase in gas temperature will lead to de-excitation of the laser energy level and thermal excitation of lower laser energy levels, which will reduce the number of inversions of the particles. Furthermore, an increase in gas temperature will broaden the spectral lines, resulting in a decrease in the gain factor. In particular, an increase in gas temperature will also cause the decomposition of CO2 molecules and reduce the concentration of CO2 molecules in the discharge tube. These factors can reduce the output pow



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