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After 50 years of development, laser technology has already stepped out of the ivory tower from the experimental exploration and embarked on a practical road. The current laser technology has been combined with multiple disciplines to form multiple application technologies, such as optoelectronic technology, laser medical and photonic biology, laser detection and metrology, laser holography, laser chemistry, laser guidance, laser controllable nucleus. Fusion and so on. The emergence of these cross-cutting technologies and new disciplines has continued to promote the development of traditional and emerging industries.
And this booming new technology is not only used on a large scale in electronic semiconductors, automotive, materials processing, machinery manufacturing, steel metallurgy, petroleum, hardware, electrical instrumentation, light industry, medical equipment, packaging, gift industry, watches, Clothing, cosmetics, tobacco, aerospace, decorative printing, transportation, pharmaceuticals, cigarettes and other industries, and into the daily life of the people, but also bring unlimited business opportunities for the industrial age.
Laser technology in the electronics industry
Laser processing technology is a non-contact processing method, so it does not produce mechanical extrusion or mechanical stress, especially in line with the processing requirements of the electronics industry. Laser processing technology is widely used in the electronics industry due to its high efficiency, non-polluting, high precision and small heat affected zone.
For example, the laser dicing technology used in the production process of integrated circuits can achieve the purpose of improving the utilization rate of silicon wafers, high yield and good cutting quality, and can also be used for dicing of single crystal silicon, polycrystalline silicon, amorphous silicon solar cells. And dicing and cutting of silicon, germanium, arsenic and other semiconductor substrate materials. Another example is the laser trimming technology used in the automatic glutinous rice trimming of the specified resistors. It has high precision, minimal thermal impact on adjacent components during processing, no pollution, and easy computer control. It can meet the requirements of fast trimming resistors. For the purpose of the predetermined value, it is also possible to use laser technology to perform capacitance correction of the chip capacitor and fine adjustment of the hybrid integrated circuit. Superior positioning accuracy enables the laser trimming system to increase throughput and circuit functionality in miniaturized precision linear combined signal devices. Another example is that laser marking technology has been used in a large number of electronic components, integrated circuit trademark models, numbered printed circuit boards. Laser plating, as an emerging high-energy beam plating technology, is of great significance for the production and repair of microelectronic devices and large-scale integrated circuits. At present, although the principles of laser plating, laser ablation, plasma laser deposition and laser jet are still under study, their technology is already in use.
Trumpf's high-power CO2 laser and its three-dimensional processing system, Rofin's Diffusion-Cooled CO2 Slab Laser, Win-win welding machine, Dazu's PCB laser drilling, Laser Valley's EPR series, and open-day C-Series laser cutting machine Delong's ITO film laser engraving equipment, EO's super-standard MGY, MGF series, etc. will compete on the same stage at the Shanghai Laser and Photonics Exhibition in Munich in March 2010.
Application of laser technology in the automotive industry
The automotive industry is one of the most used areas for laser processing. Laser processing is usually based on cutting and welding. In the car prototype and small batch production, a large number of three-dimensional laser beam cutting machine is used to cut and process ordinary aluminum, stainless steel and other thin plates and strips. The application of laser processing not only greatly shortens the production preparation cycle, but also makes the workshop production flexible and reduces the processing area by half. Due to its high processing efficiency, the processing cost of machining is reduced by 50%. Laser welding has become a standard process in the automotive industry, mainly for body welding, welding and parts welding. Because laser tailor welding has the advantages of reducing the number of parts and molds, reducing the number of spot welds, optimizing material usage, reducing part weight, reducing cost and increasing dimensional accuracy, it is used for front windshield frames, door inner panels, underbody , in the production of neutral columns, etc. Laser welding is mainly used for the welding of body frame structures, such as the welding of the top cover and the side body. With laser welding technology, the width of the joint between the workpiece joints can be reduced, which reduces the amount of sheet metal used and the rigidity of the car body. It has been part of the world's largest automakers and leading component suppliers for high-end cars. Adopted.
In addition, other laser technologies have also been widely used in the automotive industry. Laser surface treatment is used in the manufacture of automotive engine seats, roof casings and frames, such as steel sleeves, crankshafts, piston rings and gears. After laser heat treatment, no post-processing is required. Can be sent directly to the assembly line for installation. Laser measurements can quickly and very accurately verify that the dimensions of each finished part are exactly the same as the design dimensions. Moreover, laser gauges can quickly transform a component or physical model into a digital file that can be processed in a variety of ways and compared to other files. Laser rapid prototyping technology has broken through the traditional model of manufacturing and has become the most attractive technology at present. Laser rapid prototyping technology enables new products to be put on the market early, greatly improving the ability of automobile manufacturers to apply to the market and the competitiveness of products.
At the Shanghai Laser and Photonics Exhibition in Munich in March 2010, you will be able to access the latest technologies in the automotive industry, such as TRUMPF, Rolfen, Farley, Win-Win, Dazu, Laser Valley, etc. Feel the powerful vitality and vitality that laser technology brings to the automotive industry.
Application of laser technology in material processing
Lasers have been used for cutting and welding thin metal sheets for 30 years. The iron-cutting laser cutting machine has become a widely used sword in the metal processing industry. Laser cutting technology is widely used in the processing of metal and non-metal materials, greatly reducing processing time, reducing processing costs and improving workpiece quality. Pulsed lasers are suitable for metallic materials and continuous lasers are suitable for non-metallic materials.
At the same time, the latest processing technology has been introduced in the field of plastics processing, entering a new "high, precise, sharp" field, such as plastic cutting, welding, marking, drilling, engraving. Laser processing has no mechanical impact on the workpiece itself, the workpiece will not be deformed; the heat affected zone is small, and residual thermal stress is not easily generated inside the workpiece; the laser beam can be switched at any time after focusing and positioning, and the energy and trajectory can be realized by combining with the computer program. Precise control to complete precise and complex cutting and punching; it can also be operated during workpiece movement to automate machining and greatly increase production speed. The seams welded by laser welding are durable and clean, and can weld difficult-to-connect modified rubber and glass-filled thermoplastics; laser marking is to form a certain mark on the plastic parts by laser, and can also overcome the mechanical marking to change the material. The surface quality is easy to breed bacteria, and the markings are high in brightness and clear in edges.
Subsequently, laser technology has gradually sprung up in the processing of materials such as molds, glass, and rubber, which has made people continue to marvel at the rapid development and maturity of this short 50 years.
Dazu's pump laser marking machine CO2 flying laser marking machine, Huagong laser and Farley's 3D laser cutting machine, laser valley DPR series, including Chutian laser, Daheng, Tongwei, Luofen, Datong, Domestic and foreign companies such as Global will present their latest products and technologies at the Shanghai Laser and Photonics Exhibition in Munich in March.
At present, the shadow of the laser has been everywhere in industrial production, no longer, nowhere. Laser technology brings not only high-tech, high efficiency, high return on investment, but also light up life, light up technology, and make this industrial era colorful.
Laser technology, one of the major inventions of the 20th century, has been continuously developed in recent years, which has led to the rapid development of the global laser industry. In the manufacturing industry, such as automotive, electronics, aerospace, biomedical and other fields have basically completed the upgrading of traditional processes. Especially in the field of material processing, laser processing technology has been applied on a large scale, and it has officially entered the era of “light processingâ€.