What is a laser cutting machine?

What is a fiber laser cutting machine? Today, Hebei We Co., Ltd. brings you the encyclopedia of fiber laser cutting machine to help you better understand the purpose, use method and knowledge guide of fiber cutting machine.

Fiber laser cutting machine is a newly developed one in the world A new type of laser cutting machine, which can output a high-energy density laser beam, concentrated on the surface of the workpiece, so that the area irradiated by the ultra-fine focus spot on the workpiece instantly melts and vaporizes, and the spot moves under the action of the CNC cutting system. Automatic cutting is realized by the irradiation position. Compared with large-capacity gas laser cutting machines and solid-state laser cutting machines, it has obvious advantages and has gradually become an important candidate equipment in high-precision laser processing, lidar systems, aerospace technology, laser medicine and other fields.

The fiber laser cutting machine can perform plane cutting or bevel cutting, with neat and smooth edges. It is suitable for high-precision cutting of metal plates. The mechanical arm can replace the imported five-axis laser for three-dimensional cutting. Axis laser. Compared with the ordinary carbon dioxide laser cutting machine, it saves space and gas consumption, and has a high photoelectric conversion rate. It is a new energy-saving and environmentally-friendly product, and it is also one of the very good technical products.

Strictly speaking, a fiber laser cutting machine is a laser processing equipment used for cutting, engraving, and punching metal sheets. It uses the light beam emitted by the laser cutting machine to irradiate the surface of the object to be processed, instantly releasing a large amount of energy to melt the workpiece at the irradiated part, so as to achieve the purpose of cutting.

Widely used in steel, automobile, petroleum, chemical, metallurgy, electronics, electric power, rail transit, construction machinery, food machinery, textile machinery, air conditioning manufacturing, elevators, construction machinery, environmental protection machinery, advertising decoration, etc. industry.

1. The mainstream of traditional laser cutting adopts CO2 laser cutting machine, which can stably cut the diameter within 20mm Carbon steel, stainless steel within 10mm, aluminum alloy within 8mm. The fiber laser cutting machine has obvious advantages when cutting thin plates within 4mm, and the quality is poor when cutting thick plates due to the influence of the wavelength of the solid laser. Laser cutting machines are not omnipotent. The wavelength of the CO2 laser cutting machine is 10.6um, and the wavelength of the solid-state laser cutting machine such as YAG or fiber laser cutting machine is 1.06um. The former is easily absorbed by non-metals and can cut wood, acrylic, PP, organic glass and other non-metals with high quality The latter is not easily absorbed by non-metal materials, so it is impossible to cut non-metal materials. But when it comes to highly reflective materials such as copper, silver, and pure aluminum, neither of these two types of lasers can do anything.

2. Because the wavelength of CO2 and fiber laser cutting machine is an order of magnitude difference, the former cannot be transmitted by optical fiber, while the latter can be transmitted by optical fiber, which greatly increases the flexibility of processing. In the early days, before the fiber laser cutting machine was put on the market, in order to achieve three-dimensional processing, optical joint technology was used to guide the CO2 laser to the three-dimensional curved surface through a highly refined and matched dynamic combined mirror system to achieve the three-dimensional processing of the CO2 laser. Due to the limitation of domestic refined processing technology, this technology is mainly controlled by a few developed countries in Europe and America, which is expensive and requires high maintenance. The fiber laser cutting machine can be transmitted through optical fiber, and its flexibility has been greatly improved, especially in the automotive industry. Because it is basically about 1mm thin plate surface processing, the fiber laser cutting machine is equipped with the same flexible robot system, with low cost, few failure points, easy maintenance, and fast speed. It will definitely occupy this market.

3. The photoelectric conversion rate of fiber laser cutting machine is as high as 25%, while the photoelectric conversion rate of CO2 laser cutting machine is only about 10%. Fiber laser cutting machine has obvious advantages in terms of power consumption and supporting cooling system. If there are many fiber laser cutting machine manufacturers and the price is more suitable, the thick plate cutting process is solved, and the threat to the CO2 laser cutting machine will be huge. However, as a new laser technology, fiber laser cutting machine is far less popular than CO2 laser cutting machine, and its stability, reliability and convenience of after-sales service have yet to be observed by the market for a long time.

4. According to international safety standards, the degree of danger of laser cutting machines is divided into four levels, CO2 laser cutting machines are not dangerous, and fiber laser cutting machines are harmful to human eyes because of their short wavelength. Large is a dangerous level. For safety reasons, fiber laser processing requires a completely enclosed environment.

The application direction of laser should be high-power CO2 laser used in more stable, larger and faster machine tools. Fiber laser cutting machine has more advantages when processing curved surfaces below 2mm.

(1) High precision and fast speed , The gap is narrow, the heat-affected zone is small, the cutting surface is smooth, and there is no burr.

(2) The laser cutting head does not touch the surface of the material and does not scratch the workpiece.

(3) The slit is narrow, the heat-affected zone is small, the local deformation of the workpiece is small, and there is no mechanical deformation.

(4) Convenient processing, can process any pattern, and can cut pipes and other profiles.

(5) Non-deformation cutting can cut any hardness material, such as steel plate, stainless steel, aluminum alloy plate, cemented carbide, etc.

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