Wire Mesh Cloth,Black Wire Cloth,Black Cloth Shunxing Hardware Wire Mesh Co., Ltd. , http://www.rywiremesh.com
The choice of laser is usually based on the nature of the material being processed, as different materials are suitable for absorbing laser beams of different wavelengths. For example, a metal material generally absorbs a laser beam having a wavelength of 1.06 μm, and a composite of plastic and ceramic easily absorbs a laser beam having a wavelength of 10.6 μm. There are two main types of lasers currently used, one is a carbon dioxide laser and the other is a solid yttrium-yttrium aluminum garnet laser.
Carbon dioxide lasers are currently the most widely used lasers with an output of 50 to 1500 W and a laser beam with a wavelength of 10.6 μm. They are mainly used for cutting, drilling and welding. The laser cutting can be carried out at a speed of about 7.5 m per minute, and the cutting width is only 0.1 to 0.3 mm, so that the "heat-affected zone" of the cutting can be minimized, and the contour is cut clearly without burrs. Due to the high speed of laser drilling, it can solve the problem of drilling holes on fragile ceramics. For example, it is only 0.3S at a time to drill a 1.3mm diameter on a ceramic with a thickness of 0.6mm. In some countries, carbon dioxide lasers have been used in place of electron beam welding equipment, and laser welding is not required to be carried out in a vacuum like an electron beam, thereby simplifying processes and reducing costs.
The solid-state yttrium-yttrium aluminum garnet laser has a relatively short time to enter industrial applications. Its output power is 10~400W, the laser beam wavelength is 1.06μm, and it is easily absorbed by metal materials. It is commonly used in low-power precision drilling and electronics industry. Sealing and spot welding.
Nissan Motor Co., Ltd. has succeeded in using laser treatment of steel sheet surfaces to improve paint gloss. This method is to perform surface etching with a laser beam before painting the steel sheet. The surface of the steel sheet is formed with a very small number of extremely small diameters and depths, and then painted. This not only improves the gloss, but also the paint does not fall off easily. Volkswagen uses a combination of laser and robotic systems to process the dashboard of the car, using a carbon dioxide laser with a power of 400W, which saves $600,000 in processing costs per year. Another German car company uses a carbon dioxide laser to weld galvanized steel sheets and uses a mechanical visual system to monitor the welding process, greatly increasing production efficiency. American General Motors Corporation uses a 1000W carbon dioxide laser to cut into the exhaust pipe, which not only improves the efficiency by 30%, but also has good cutting quality. Ford Motor Company uses a 1500W CO2 laser to cut PVC composites for high efficiency and automated operation. The Italian Fiat Auto Company installed a laser-robot combination system on the production line, which not only saves labor but also speeds up the production process.
Russia also uses lasers in the mechanical processing industry. A factory used a laser to quench the engine cylinder block for a traction locomotive. The laser can heat the surface to be treated to 1000 ° C in one second and quickly quench it, completely avoiding deformation of the processed part and improving the surface wear resistance of the part by 50%.
Due to the many advantages of laser processing, some countries have also developed new types of laser processing machines, such as laser machines in Japan and the United States. With the development of science and technology, the application of laser in the industrial field will become more and more extensive.
Laser application in the industrial field
In recent years, industrial lasers have become an important equipment in the foreign machinery processing industry, and are widely used in cutting, drilling, hunger and heat treatment. Laser processing is not only easy to automate, but also has high economic benefits.