Views:6 Author:Site Editor Publish Time: 2020-06-02 Origin:Site
As a new processing method, metal cutting equipment has the advantages of high processing accuracy, simple operation and high automation. It has been widely used in leather, textile, clothing and other industries. Nowadays, it is also widely used in metal processing. Compared with traditional cutting methods, metal laser cutting machine is not only cheap, but also has good effect, accuracy and cutting speed, because laser processing has no mechanical pressure on the work piece. It also has the characteristics of safe operation and simple maintenance. So, what kind of machine is a metal cutting machine? In daily production work, how to proceed?
The discussion points are as follows:
What is a metal cutting machine
The principle of metal cutting machine
Classification of cutting methods
The so-called metal cutting machine, also known as metal laser cutting machine, is to melt and evaporate the metal work piece by the energy released when the laser beam irradiates the metal work piece surface, so as to achieve the purpose of cutting. Or sculpture. The machine has the characteristics of high precision, fast cutting speed, free from cutting pattern restriction, automatic typesetting, material saving, smooth cutting, low processing cost and so on. Metal laser cutting machine is also an automatic typesetting machine equipment. It can not only save material, but also use this machine to cut material very flat, its incision is very smooth. Therefore, most manufacturers will choose this kind of equipment, because it can reduce the manufacturing cost and processing cost of enterprises.
Metal laser cutting machine uses focused high power density laser beam to irradiate the work piece, so that the irradiated material can quickly melt, evaporate, ablate or reach the burning point. At the same time, the melted material can be blown away by high-speed airflow coaxial with the light beam, thus cutting off the work piece. Laser cutting is one of the hot cutting methods.
Laser cutting methods of metal cutting machine can be divided into four categories: laser vaporization cutting, laser melt cutting, laser oxygen cutting, laser scratch and controlled fracture.
(1) Laser vaporization cutting
When the work piece is heated by high energy density laser beam, the temperature rises rapidly and reaches the boiling point of the material in a very short time. The material begins to evaporate and form steam. These vapors are ejected at very high speeds, while the vapors are ejected at the same time, forming a notch in the material. The heat of vaporization of materials is usually very large, so laser vaporization cutting requires a lot of power and power density. Laser vaporization cutting is mainly used to cut very thin metal and non-metal materials.
(2) Laser Melting Cutting
In laser melting and cutting, the metal material is melted by laser heating, and then the non-oxidized gas is injected into the coaxial nozzle of the light beam. The liquid metal is discharged through the strong pressure of the gas to form an incision. Laser melting cutting does not require complete evaporation of metal, and requires only one tenth of the energy of vaporization cutting. Today, laser melt cutting is mainly used to cut some non-oxidizable materials or active metals, such as stainless steel, titanium, aluminum and its alloys.
(3) Laser oxygen cutting
The principle of laser oxygen cutting is similar to that of oxyacetylene cutting. It uses laser as preheating source and oxygen as cutting gas. On the one hand, the injected gas reacts with the cutting metal to produce oxidation reaction, releasing a large amount of heat of oxidation; on the other hand, molten oxides and melts blow out from the reaction zone, forming a gap in the metal. Because the oxidation reaction in the cutting process produces a lot of heat, the energy required for laser oxygen cutting is only half of the energy required for melt cutting, and the cutting speed is much faster than that of laser evaporation cutting and melt cutting. Laser oxygen cutting is mainly used for oxidizable metal materials, such as carbon steel, titanium steel and heat treatment steel.
(4) Laser scratch and fracture control
Laser scratch is to scan the surface of brittle material by high energy density laser, so that the material is heated and evaporated into a small groove, and then applied a certain pressure, brittle material will crack along the groove. Controlling fracture is to use the steep temperature distribution produced by Laser Grooving to produce local thermal stress in brittle materials, which can make the materials break along the groove.
Laser equipment has been studied in the world for decades, but it is only a new stage in China, especially metal laser cutting machine. Although it has diversified, it is still in the initial stage of development. In the new stage of development, there will be more room for development. Our company is now committed to the production of this metal cutting equipment, so if you want to buy metal laser cutting machine, shearing machine, please choose us. If you have any questions, please consult us in time.