Laser cutting is the use of laser beam cutting wood, plastic, metal, rubber and other materials, this technology has become an important part of the manufacturing process. Laser cutting usually guides the output of high power laser through optical devices. Laser optics and CNC (computer digital control) are used to guide the generation of materials or laser beams. The laser cutting machine is integrated with a computer controlled programming system, which determines the location and mode of cutting on materials.
Laser cutting is a thermal cutting process used to process metal sheets. The laser beam is generated by a laser source (resonator) and transmitted through a transmission machine or a mirror in a fiber laser cutting head. The lens focuses at a very high power with a very small diameter. This focused laser beam meets and melts the metal sheet. Laser cutting machine uses high power beam to cut materials based on computer control parameters. When the laser guides the beam along the material, all objects in its direct path are vaporized, burning the metal laser cutter or melting. One of the advantages of laser cutting technology is that cutting products rarely requires any finishing work, because this process ensures high quality surface finish. Laser cutting technology has two formats: gantry and galvanometer system. The gantry system places the laser perpendicular to the material, and the machine physically points the beam at its surface. Since the gantry is the slower of the two systems, manufacturers usually use it to produce prototypes. In contrast, the galvanometer system uses mirror angles to reposition the laser beam and can cut at 100 feet per minute. Manufacturers usually use a galvanometer system for full production work.
The main reason for using laser cutting machine is to reduce the mechanical stress of sheet metal parts during cutting. The laser not only eliminates the impact stress that may adversely affect the sheet metal products during the cutting process, but also has a very small heating zone. This means that the rest of the workpiece is only exposed to the environment with little or no heat, and the performance of the processed material is maintained from the metal laser cutting machine. In addition, since laser cutting can be carried out very close to each other without negative impact on sheet metal, laser cutting can help reduce waste to a large extent - tighter cutting allows you to use sheet metal per square foot to make more parts. However, CNC punch does have a place in modern manufacturing.
The laser cutting machine has been welcomed and applied by people since its appearance, because the use effect of the device is very good, which can meet many needs of users. What process and technical performance make this equipment have good functions?
In industry, we will often see the use of hairless boards. This kind of board is produced through the disordered texturing technology of modern laser cutting machines. Its surface shows disordered pits. This kind of board has very high deep drawing and extensibility, which is better than the texturing board produced by electric spark technology.
Use fiber laser to texturize the roll in disorder, and the height of the boss is 2-25 μ m. The diameter of the small round point is 75 μ m. The pit depth also reaches 2-20 μ m. Roughness of roll surface can reach 0.5-15 μ m。 The roughness Ra value has little correlation with the peak value Rpc per cm. Rpc can reach 40-120.
We can see that every texturing point will have a boss, which will be protected by carbon dioxide in the process of metallurgical melting and solidification, and the laser heating and cooling speed is very fast, so the boss will become hard. The boss transfer rate is generally 80%, so the steel passing capacity of the roll will be increased.
Among them, the fiber laser has high photoelectric conversion rate and good beam quality. The equipment is imported from abroad, which can achieve the photoelectric conversion efficiency of 28%. The laser cutting machine using fiber laser can operate stably for a long time, which can meet the needs of more production lines. Therefore, this disorder texturing technology can reduce the operating cost. Metal laser cutting machine