Views: 0 Author: XDLASER Publish Time: 2021-09-16 Origin: XDLASER
CNC fiber laser cutting machine is widely used for cutting metal materials such as: stainless steel, carbon steel, mild steel, tool steel, galvanized steel, spring steel, aluminum, copper, brass, alloy, silver, gold, iron, titanium, chromium, manganese, cobalt, nickel. Fiber laser cutter has optional types, open type with one table, open type with 2 tables, enclosed type and so on. Normally, machine with higher laser power more than 3000W needs enclosed cover.
China's laser cutting equipment is widely used in terminal industries. At present, it is mainly used in industrial material processing and communication storage industries, accounting for 45% and 28% respectively, followed by medical beauty and scientific research military fields, accounting for 9% and 7% respectively. Among the downstream industries of laser cutting equipment, low-power laser cutting equipment is widely used in chassis and cabinet, door industry, hardware products, electronics industry, household appliances and kitchenware, advertising decoration industry and other industries; High power laser cutting is mainly used for parts manufacturing in rail locomotive, shipbuilding industry and automobile industry, heavy machinery model making, oil pipeline, construction industry, etc. At present, optical fiber laser cutting has become a market trend in the general metal processing industry. It is widely used in sheet metal processing, kitchen lamps, saw blades, wing plates, metal, textile machinery, grain machinery, therapeutic instruments and tables and other industries. Especially in many processing methods of sheet metal industry, it is deeply favored by industry users.
In the past few years, with the continuous decline in the prices of core components such as laser cutting head, laser and laser cutting control system upstream of laser cutting equipment, as well as the continuous improvement of the technical strength, brand strength and marketing strength of domestic laser cutting equipment enterprises, the market penetration and application fields of laser cutting equipment in China have been continuously improved, Laser cutting is gradually replacing traditional products such as punch, plate shear and shear machine tools in metal forming machine tools. The laser cutting equipment industry has ushered in a period of rapid development.
Laser cutting is to use the focused high-power density laser beam to irradiate the work piece, make the irradiated material melt, vaporize and ablate rapidly, and blow away the molten material with the help of the high-speed air flow coaxial with the beam, so as to realize the cutting of the work piece. Compared with other cutting methods, laser cutting is generally characterized by fast cutting speed and high quality, which can be summarized as follows:
(1) Good cutting quality. Due to the small laser spot, high energy density and fast cutting speed, laser cutting can obtain better cutting quality;
(2) The laser gas cutting incision is thin and narrow, the two sides of the slit are parallel and perpendicular to the surface;
(3) The cutting surface is smooth and beautiful, and can even be used as the last processing process without machining, and the parts can be used directly;
(4) After laser cutting, the width of heat affected zone is very small, the properties of materials near the cutting seam are hardly affected, and the work piece deformation is small and the cutting precision is high;
(5) Fast cutting speed, for example: 2500W laser cutting 1mm thick cold-rolled carbon steel plate, the cutting speed can reach 16-19m / min;
(6) For non-contact cutting, there is no contact between the nozzle and the work piece during laser cutting, and there is no tool wear.
Laser cutting machine can meet the cutting requirements of various materials and complex shapes, but in addition to efficient and stable lasers, auxiliary gas is also the key factor to ensure the cutting quality of work pieces. Nitrogen, oxygen and air are generally used as auxiliary gases in laser cutting.
Because the cost of nitrogen and oxygen is higher than that of compressed air, compressed air is widely used as auxiliary gas in laser cutting industry in recent two years. Its advantage is mainly to save production cost. The unit power consumption per day is 80 kWh (1 yuan / kW / h), which is equivalent to the working hours of 15 bottles (25 yuan / bottle) of oxygen, and more than 70000 yuan / set can be saved every year. And it can effectively improve the cutting ability and increase the cutting thickness. Compared with oxygen, the slag hanging is slightly more and the speed is slightly slower, but the difference is not very obvious, which basically does not affect the use.
Under the background of increasingly fierce competition in the industry, increasing the added value of products by improving the difficulty of product technology and the level of product industrial design is one of the means for most enterprises to obtain competitive advantage. As an ideal auxiliary gas for laser cutting, compressed air can not only help complete high-quality cutting tasks, but also reduce costs and improve benefits for enterprises. However, in the actual process of laser cutting operation, the quality of compressed air has a very direct impact on the quality of laser cutting.
The compressed air contains water mist and oil. If it is not cleaned, the high-pressure jet will be sprayed on the protective mirror of the laser cutting head, which will seriously affect the transmission of the laser beam, disperse the focus, make the product impervious and produce waste products. If it is a ultra-high power laser cutting machine, as long as a little tiny oil film or water mist is adhered to the surface of the protective mirror or nozzle, it may also cause high-energy laser emission to burn the laser head. Because the price of the laser head of ultra-high power laser cutting machine (above 12000W) is more than 20000, and the suppliers of general air compressor can not deal with the oil and moisture in the compressed air well, many users of ultra-high power laser cutting machine are unwilling to take the risk of using compressed air as auxiliary gas. Therefore, the model selection of air compressor for laser is particularly important, and the special integrated air compressor for laser cutting came into being.
The rapid development of laser and photoelectric technology has become an indispensable supporting technology in the fields of machinery manufacturing, automobile manufacturing, aerospace, power battery, smart phone manufacturing, medical devices and even national defense and military. In particular, China's economy is in a new stage of high-quality development, and the development of high-tech industry is the only way. Therefore, the next three to five years may be a brilliant highlight moment for China's laser industry. Under the background that the new driving force of economic growth has not been fully formed, China must accelerate the promotion of independent innovation and industrial structure upgrading, and improve the independent R & D capacity of high-end manufacturing industry. In the process of global economic recovery in the future, laser, as a key technology of intelligent manufacturing equipment, will play a more important role. This requires laser cutting air compressor manufacturers, as important gas auxiliary equipment, to make continuous efforts in gas cleanliness, operation stability and product energy efficiency, so as to contribute to the high-quality development of the laser industry.
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