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Laser cutting of laser cutting machine is one of the methods of thermal cutting. Laser cutting uses the high power (referring to the amount of work done by the object in unit time) and then illuminates the part on the part. The chemical reaction is to melt the material to achieve a cutting effect. Laser cutting has the classification of vaporization, melting, oxidation, etc., and different cutting methods can be selected according to the material.
1. Laser vaporization cutting
Laser vaporization is a high-energy, high-density laser beam that uses a high-energy, high-density laser beam to heat the workpiece, raise the temperature, and vaporize the material into steam in a short period of time. When the vapor is ejected, it forms a bond on the material. The cut, so that the cutting effect is achieved. However, the heat of vaporization of a material generally is large, so a high-power laser beam should be used when heating the material. The materials used in laser vaporization cutting generally have extremely thin metallic materials and non-metallic materials.
2. Laser melting cutting
Laser melt cutting is to melt the material quality to a certain temperature, and then spray a non-oxidizing gas through a nozzle coaxial with the beam, and use the pressure of the gas to discharge the liquid metal to form a slit. The energy required for laser melting and cutting is only 1/10 of that of vaporization cutting, and it is not necessary to completely vaporize the metal. Generally suitable for laser melting and cutting materials are stainless steel, titanium, aluminum and alloys thereof, etc., which are some materials that are not easily oxidized or active metals.
3. laser oxygen cutting
Laser oxygen cutting uses a laser as a preheating heat source, and uses an active gas such as oxygen as an auxiliary gas for cutting. After the gas is ejected, the gas and the metal are oxidized to emit a large amount of oxidation heat. At the same time, the molten oxide and the melt are blown out of the reaction zone to form a slit in the metal. Generally suitable for laser oxygen cutting materials are carbon steel, titanium steel and heat-treated steel and other easily oxidizable metal materials.
4. laser dicing and control fracture
Laser dicing and controlled rupture is the use of a high-energy density laser beam to scan the surface of the material. The outside of the material is heated to emit a small groove, and then a certain pressure is applied, so the laser will cut along this small groove. The material qualities typically used for such cutting are brittle materials.