Views: 5 Author: hu Publish Time: 2022-08-04 Origin: dapeng
Six advantages of laser cutting machine in sheet metal industry
1. Principle
Laser cutting is to irradiate the workpiece with a focused high-power density laser beam to rapidly melt, vaporize, ablate or reach the ignition point of the irradiated material. Open. Laser cutting is one of the thermal cutting methods.
2. Classification
Laser cutting can be divided into four categories: laser vaporization cutting, laser melting cutting, laser oxygen cutting and laser scribing and controlled fracture.
1) Laser vaporization cutting
The workpiece is heated with a high-energy-density laser beam, 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 steam. These steams are ejected at high speed, and while the steam is ejected, cuts are formed in the material. The vaporization heat of the material is generally large, so the laser vaporization cutting requires a large power and power density.
Laser vaporization cutting is mostly used for the cutting of extremely thin metal materials and non-metal materials (such as paper, cloth, wood, plastic and rubber, etc.).
2) Laser melting cutting
When laser melting and cutting, the metal material is melted by laser heating, and then non-oxidizing gas (Ar, He, N, etc.) is sprayed through the nozzle coaxial with the beam, and the liquid metal is discharged by force. The pressure of the gas creates a cut. Laser melting cutting does not need to completely vaporize the metal, and the energy required is only 1/10 of the vaporized cutting.
Six advantages of laser cutting machine in sheet metal industry
1. Principle
Laser cutting is to irradiate the workpiece with a focused high-power density laser beam to rapidly melt, vaporize, ablate or reach the ignition point of the irradiated material. Open. Laser cutting is one of the thermal cutting methods.
2. Classification
Laser cutting can be divided into four categories: laser vaporization cutting, laser melting cutting, laser oxygen cutting and laser scribing and controlled fracture.
1) Laser vaporization cutting
The workpiece is heated with a high-energy-density laser beam, 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 steam. These steams are ejected at high speed, and while the steam is ejected, cuts are formed in the material. The vaporization heat of the material is generally large, so the laser vaporization cutting requires a large power and power density.
Laser vaporization cutting is mostly used for the cutting of extremely thin metal materials and non-metal materials (such as paper, cloth, wood, plastic and rubber, etc.).
2) Laser melting cutting
When laser melting and cutting, the metal material is melted by laser heating, and then non-oxidizing gas (Ar, He, N, etc.) is sprayed through the nozzle coaxial with the beam, and the liquid metal is discharged by force. The pressure of the gas creates a cut. Laser melting cutting does not need to completely vaporize the metal, and the energy required is only 1/10 of the vaporized cutting.
Laser melting cutting is mainly used to cut materials that are not easily oxidized or reactive metals, such as stainless steel, titanium, aluminum and their alloys.
3) Laser oxygen cutting
The principle of laser oxygen cutting is similar to oxyacetylene cutting. It uses a laser as a preheating heat source and a reactive gas such as oxygen as a cutting gas. On the one hand, the blown gas acts on the cutting metal, an oxidation reaction occurs, and a large amount of oxidation heat is released; on the other hand, the molten oxide and the melt are blown out from the reaction zone, forming a cut in the metal. Since the oxidation reaction in the cutting process generates a lot of heat, the energy required for laser oxygen cutting is only 1/2 of that of melting cutting, and the cutting speed is much higher than that of laser steam cutting and melting cutting. Laser oxygen cutting is mainly used for carbon steel, titanium steel, heat-treated steel and other easily oxidized metal materials.
4) Laser scribing and controlled fracture
Laser scribing uses a high-energy-density laser to scan the surface of a brittle material, so that the material is heated and evaporated into small grooves, and then a certain pressure is applied, and the brittle material will crack along the small groove. The laser used for laser scribing is generally adjusted Q laser and CO2 laser.
Controlled fracture is the use of the steep temperature distribution generated by laser grooving to generate local thermal stress in brittle materials, causing the material to fracture along small grooves.
Using a laser cutting machine has the following six advantages:
1. The flexibility of laser cutting is high, the cutting speed is fast, the production efficiency is high, and the product production cycle is short.
2. Laser cutting has no cutting force and no deformation during processing;
3. No tool wear, good material adaptability, long effective life,
4. Whether it is simple or complex sheet metal parts, laser cutting can be used for precise and rapid prototyping;
5. The slit is narrow, the cutting quality is good, the degree of automation is high, the operation is simple, the labor intensity is low, and there is no pollution;
6. It can realize automatic cutting and nesting, which improves the utilization rate of materials, low production cost and good economic benefits.
is mainly used to cut materials that are not easily oxidized or reactive metals, such as stainless steel, titanium, aluminum and their alloys.
3) Laser oxygen cutting
The principle of laser oxygen cutting is similar to oxyacetylene cutting. It uses a laser as a preheating heat source and a reactive gas such as oxygen as a cutting gas. On the one hand, the blown gas acts on the cutting metal, an oxidation reaction occurs, and a large amount of oxidation heat is released; on the other hand, the molten oxide and the melt are blown out from the reaction zone, forming a cut in the metal. Since the oxidation reaction in the cutting process generates a lot of heat, the energy required for laser oxygen cutting is only 1/2 of that of melting cutting, and the cutting speed is much higher than that of laser steam cutting and melting cutting. Laser oxygen cutting is mainly used for carbon steel, titanium steel, heat-treated steel and other easily oxidized metal materials.
4) Laser scribing and controlled fracture
Laser scribing uses a high-energy-density laser to scan the surface of a brittle material, so that the material is heated and evaporated into small grooves, and then a certain pressure is applied, and the brittle material will crack along the small groove. The laser used for laser scribing is generally adjusted Q laser and CO2 laser.
Controlled fracture is the use of the steep temperature distribution generated by laser grooving to generate local thermal stress in brittle materials, causing the material to fracture along small grooves.
Using a laser cutting machine has the following six advantages:
1. The flexibility of laser cutting is high, the cutting speed is fast, the production efficiency is high, and the product production cycle is short.
2. Laser cutting has no cutting force and no deformation during processing;
3. No tool wear, good material adaptability, long effective life,
4. Whether it is simple or complex sheet metal parts, laser cutting can be used for precise and rapid prototyping;
5. The slit is narrow, the cutting quality is good, the degree of automation is high, the operation is simple, the labor intensity is low, and there is no pollution;
6. It can realize automatic cutting and nesting, which improves the utilization rate of materials, low production cost and good economic benefits.
