Dry Air Compressor System

1. Low energy consumption, low maintenance costs.

2. Intelligent PID function control.

3. Compact structure, 100% transmission efficiency.

4. Constant pressure gas supply, gas production depending on working conditions.

5. High-efficiency permanent magnet motor, super energy-saving.

6. Frequency conversion control of centrifugal cooling fan.

4-1 combined screw air compressor for laser cutting

The laser cutting dry air compressor system can meet the cutting requirements of various materials and complex shapes. In addition to the laser that can provide high energy, the auxiliary gas is an indispensable material to complete the cutting. The auxiliary gases used for laser cutting mainly include oxygen, nitrogen and compressed air. Its main function is to cool down to prevent hardening of the material, that is, to be heat treated. The second is that the pressurized gas blows off the molten metal slag to prevent dust from clogging the laser nozzle, protect and extend its service life.

Since the cost of nitrogen and oxygen is higher than that of compressed air, and the prices of nitrogen and oxygen are increasing year by year, the use of air as a cutting auxiliary gas can greatly reduce the production cost by about half. In addition, since air itself contains about 20% oxygen, it can make up for the lack of oxygen and nitrogen to a certain extent. Using compressed air instead of nitrogen for cutting is very economical and practical. The cost of gas saved in one year is enough to buy 3 high-quality laser-specific integrated air compressors. Therefore, the use of compressed air as an auxiliary gas for cutting is becoming more and more common, which has also led to the rise of the market for special air compressors for laser cutting.

The selection of the size of the auxiliary gas air compressor for the matching laser cutting machine should be determined mainly according to the design of the auxiliary gas pressure and nozzle size of the laser cutting head used by the laser cutting machine, so that the best air compressor and air compressor can be obtained. Matching of laser cutting machine.

At present, laser cutting machines that require compressed air above 1.6MPa mainly use piston compressors, but due to the restriction of the reliability and quality of piston compressors, the development is relatively slow. Piston-type air compressors are relatively easy to obtain high pressure, but piston-type dry air compressor system are noisy, have many wearing parts, and the exhaust oil is not handled well. Therefore, it is not recommended to use piston air compressors below 1.6MPa. It is generally recommended to use screw air compressors below 1.6MPa, and then select appropriate refrigeration dryers and precision filters. The compressor should use a permanent magnet variable frequency motor, which can maintain the stability of the air supply pressure and ensure a good cutting effect.

With the development of laser cutting machine power from low power to medium power to high power and even super power, the pressure requirement of the air compressor supporting the laser cutting machine has also increased from 8bar at the beginning to 13bar two years ago, and then increased to the present It's 16 bar, and it’s still further developing to 20~30 bar. Therefore, it is necessary to develop a small flow high pressure screw air compressor with a rated discharge pressure ≧2.0MPa.

The quality of compressed air has a very direct impact on the quality of metal laser cutting, and the size and stability of the gas pressure will affect the cutting effect. Laser cutting machine users generally have a four-stage filter, or even a five-stage filter, in order to better protect the service life of the laser cutting machine. If the water mist and oil contained in the compressed air are not cleaned and sprayed on the protective mirror surface of the laser cutting head under high pressure, the transmission of the laser beam will be seriously affected, the focus will be scattered, the product will not be cut through, and waste will be generated. If it is a super high-power laser cutting machine, as long as the protective mirror or nozzle surface is stuck with a little very fine oil film or water mist, it may also cause the high-energy laser to burn out the laser head.

However, although domestic laser cutting machine technology has made breakthrough developments in recent years, it is moving towards high power, high precision, and large format. However, the development of power laser cutting machine is relatively late compared with low and medium power laser cutting machine. , Relying heavily on foreign imports. And because the price of the laser head of the ultra-high power laser cutting machine (above 12000W) is more than 20,000, and most dry air compressor system providers cannot handle the oil and moisture in the compressed air well, most of the ultra-high power lasers Users of cutting machines are not willing to take the risk of using compressed air as auxiliary gas. Therefore, for laser cutting compressors, what the industry needs to make breakthroughs is not only to provide clean compressed air without oil and water, but also to make efforts in cost reduction, stable performance, and convenient operation based on user needs to actively cultivate the market , Change the user's inherent thinking habits, and expand a broader market for the compressor in the field of laser cutting.

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