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Zhejiang laser cutting can be divided into four categories: laser vaporization cutting, laser melting cutting, laser oxygen cutting and laser scribing and controlled fracture. Laser vaporization cutting is to use a high-energy density laser beam to heat the workpiece, so that the temperature rises rapidly, reaching the boiling point of the material in a very short time, and the material begins to vaporize to form vapor. What is the classification and application range of laser cutting machines? Today, our Hongte Laser Company will introduce to you:
The spray speed of these vapors is very high. When the vapor is sprayed, cuts are formed in the material. The heat of vaporization of materials is generally very large, so a lot of power and power density are required for laser vaporization and cutting. Laser vaporization cutting is mostly used for cutting extremely thin metallic materials and non-metallic materials.
When laser melting and cutting, the metal material is melted by laser heating, and then non-oxidizing gas is sprayed through the nozzle coaxial with the beam, relying on the strong pressure of the gas to make the liquid metal Exhaust, forming an incision. Laser melting and cutting do not need to vaporize the metal completely, and the energy required is only 1/10 of that of vaporized cutting. It is mainly used for cutting some materials that are not easy to oxidize or active metals, such as stainless steel, titanium, aluminum and their alloys.
The laser oxygen cutting principle of Zhejiang laser cutting is similar to oxyacetylene cutting. It uses a laser as a preheating heat source and an active gas such as oxygen as the cutting gas. On the one hand, the blown gas reacts with the cutting metal to cause an oxidation reaction and release a large amount of oxidation heat; on the other hand, the molten oxide and melt are blown out of the reaction zone to form an incision in the metal.
Because 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 and cutting, and the cutting speed is much faster than the laser Vaporized cutting and melting cutting. Laser oxygen cutting is mainly used for easily oxidized metal materials such as carbon steel, titanium steel and heat-treated steel.
Laser scribing uses high-energy-density lasers to scan the surface of brittle materials, so that the material is heated to evaporate a small groove, and then a certain pressure is applied. Split along the small groove. The lasers used for laser scribing are generally Q-switched lasers and CO2 lasers.
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