Have you ever seen a metal laser cutting machine? Do you know what metal laser cutting machine is? Metal laser cutting machine is a kind of laser cutting machine which is made of metal and uses laser technology to cut and process metal materials. The mainstream in the market are CO2 laser cutting machine, optical fiber laser cutting machine and YAG laser cutting machine. Among them, CO2 laser cutting machine is the mainstream laser cutting equipment in the market due to its strong cutting ability and wide range. Optical fiber laser cutting machine is the latest technology. In addition, the technical requirements are relatively low, and the metal laser cutting machine is gradually popularized.
Now many factory owners use this kind of equipment, which uses the principle of laser beam cutting. Do you know what a laser is? Laser is a kind of beam with very strong release ability, which can achieve extremely fast cutting in a very short time. Metal cutting machine can save labor and time. Do you know the principle of metal laser cutting machine? Now let's take a look at the principle of metal laser cutting machine.
Laser cutting is to use the focused high power density laser beam to irradiate the workpiece, so that the irradiated material can quickly melt, vaporize, ablate or reach the ignition point. At the same time, the molten material can be blown off with the help of the high-speed airflow coaxial with the beam, so as to realize cutting the workpiece. Laser cutting is one of the thermal cutting methods.
Laser cutting can be divided into:
1、Laser vaporization cutting
2、Laser melting and cutting
3、Laser oxygen cutting
4、Laser scribing and controlled fracture
1. Laser vaporization cutting
The high energy density laser beam is used to heat the workpiece, so that the temperature rises rapidly and reaches the boiling point of the material in a very short time. The material begins to vaporize and form steam. The steam is ejected at a high speed, and at the same time, a notch is formed on the material. The heat of vaporization of materials is generally very large, so laser vaporization cutting requires a large power and power density.
Laser vaporization cutting is mainly used for cutting extremely thin metal materials and non-metallic materials (such as paper, cloth, wood, plastic and rubber).
2. Laser melting and cutting
During laser melting and cutting, the metal material is melted by laser heating, and then non oxidizing gases (Ar, He, N, etc.) are injected through a nozzle coaxial with the beam of light. The liquid metal is discharged by the strong pressure of the gas to form a notch. Laser melting and cutting does not require complete vaporization of metal, and the required energy is only 1/10 of vaporization cutting.
Laser melting cutting is mainly used for cutting materials or active metals that are not easy to be oxidized, such as stainless steel, titanium, aluminum and their alloys.
3. Laser oxygen cutting
The principle of laser oxygen cutting is similar to that of oxyacetylene cutting. It uses laser as preheating heat source and active gas such as oxygen as cutting gas. On the one hand, the blown gas acts with the cutting metal to produce oxidation reaction, releasing a lot of oxidation heat; On the other hand, the molten oxide and melt are blown out of the reaction zone to form a notch in the metal. As the oxidation reaction in the cutting process generates a lot of heat, the energy required for laser oxygen cutting is only 1/2 of the melting cutting, and the cutting speed is far greater than laser vaporization cutting and melting cutting. Laser oxygen cutting is mainly used for carbon steel, titanium steel, heat treatment steel and other easily oxidized metal materials.
4. Laser scribing and controlled fracture
Laser scribing is to use high energy density laser to scan the surface of the brittle material, so that the material is heated to evaporate a small groove, and then apply a certain pressure, the brittle material will crack along the small groove. The lasers used for laser scribing are generally Q-switched lasers and CO2 lasers.
Controlled fracture is to use the steep temperature distribution produced by laser grooving to generate local thermal stress in brittle materials, so that the materials break along the small groove.
The above is the principle introduction of metal laser cutting machine. Metal laser cutting machine is a kind of automatic typesetting machine, which can save a lot of materials, and the materials cut by metal laser cutting machine are very flat, and its cut is very smooth. The price of metal laser cutting machine is not cheap. Generally, the price is more than 10000 or 20000 yuan. However, this kind of equipment can reduce the processing cost when operating. Most processing manufacturers will choose this kind of equipment, which can reduce the manufacturing cost and processing cost of enterprises.
As a high-quality supplier of laser cutting industrial equipment, Jinan XT Laser has been deeply involved in the industry for 18 years. The company is committed to the R&D, production, sales and full process services of laser industrial equipment such as laser cutting machines, marking machines, welding machines, cleaning machines and supporting automation systems. It is a professional provider of laser industrial application solutions.
XT Laser has a perfect product quality control and customer service system. It has passed the ISO CE FDA certification and is a national high-tech enterprise. It has won the honors of China's top ten brands of laser cutting machines, honest entrepreneurs, honest operation demonstration units, AAA credit units, Jinan gazelle enterprises, Shandong specialized, special and new enterprises, and national specialized, special and new small giant enterprises.
XT Laser has a research and development team of nearly 100 people, with an industrial park base of 28000 m2, a factory area of 20000 m2 for intelligent equipment center and a marketing center of 2000 m2 in Jinan. At present, the market covers more than 160 countries and regions around the world. There are three subsidiaries and more than 30 offices in China. More than 40 service outlets and nearly 100 agents have been set up around the world to create a three hour fast response service chain, provide 24-hour escort for customers, and provide products and customers with life-cycle services.