Laser, the most popular characteristic industry of

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The characteristic industry of Guangzhou Machinery Fair - laser

at the scene of Guangzhou Machinery Fair, many laser technology enterprise booths attracted a lot of attention

laser repeat step 3 (9) is especially suitable for material processing due to its three characteristics of monochromaticity, coherence and parallelism. Laser processing is the most promising field of laser application. More than 20 kinds of laser processing technologies have been developed. The space and time control of laser is very good. It has a great degree of freedom for the material, shape, size and processing environment of the processing object. It is especially suitable for automatic processing. The combination of laser processing system and computer numerical control technology can form high-efficiency automatic processing equipment, which has become the key technology for enterprises to implement timely production, and has opened up a broad prospect for high-quality, efficient and low-cost processing and production. At present, the mature laser processing technologies include: laser rapid prototyping technology, laser welding technology, laser drilling technology, laser cutting technology, laser marking technology, laser de balancing technology, laser etching technology, laser fine tuning technology, laser storage technology, laser marking technology, laser cleaning technology, laser heat treatment and surface treatment technology

laser rapid prototyping technology integrates the latest achievements of laser technology, cad/cam technology and material technology. According to the CAD model of parts, we use laser beam to cure photosensitive polymer materials. We hope to solve the increasingly serious pollution of logistics industry as soon as possible. Materials are solidified layer by layer, accurately stacked into samples, and complex parts can be quickly and accurately manufactured without mold and cutting tool. This technology has been widely used in aerospace, electronics Automobile and other industrial fields are widely used

laser cutting technology is widely used in the processing of metal and non-metal materials, which can greatly reduce the processing time, reduce the processing cost and improve the workpiece quality. Pulsed laser is suitable for metallic materials, and continuous laser is suitable for non-metallic materials. The latter is an important application field of laser cutting technology. Modern laser has become the "sword" of "cutting iron like mud" that people dream of pursuing

laser welding technology has the effect of purifying the molten pool, can purify the weld metal, and is suitable for welding between the same and different metal materials. Laser welding has high energy density, which is especially beneficial to metal welding with high melting point, high reflectivity, high thermal conductivity and great differences in physical properties. Laser welding uses a laser beam with a lower power than when cutting metal to melt the material without vaporizing it and form a continuous solid structure after cooling. The application of laser in the industrial field has its limitations and shortcomings. For example, it is not successful to cut food and plywood with laser. When food is cut, it is also burned, and cutting plywood is far from economical

laser drilling technology has become one of the key technologies in the modern manufacturing field because of its high precision, versatility, high efficiency, low cost and significant comprehensive technical and economic benefits. Before the advent of laser, only harder materials could be used to drill holes in harder materials. In this way, it becomes extremely difficult to drill holes in the hardest diamond. With the advent of lasers, this type of operation is fast and safe. However, the holes drilled by laser are conical rather than cylindrical, which is very inconvenient in some places

the number of countries authorized with laser marking technology patents has increased to 12, which is one of the largest application fields of laser processing. Laser marking is a marking method that uses high-energy density laser to irradiate the workpiece locally, so that the surface material vaporizes or has a chemical reaction of color change, thus leaving a permanent mark. Laser marking can produce various characters, symbols and patterns, and the size of characters can range from millimeter to micron, which is of special significance to the anti-counterfeiting of products. Excimer laser marking is a new technology developed in recent years. It is especially suitable for metal marking and can realize submicron marking. It has been widely used in microelectronic industry and bioengineering

laser de balancing technology is a process of using laser to remove the unbalanced and overweight parts on the high-speed rotating parts and make the inertia axis coincide with the rotating axis to achieve dynamic balance. Laser de balancing technology has two functions: Measurement and de balancing. It can measure and correct the imbalance at the same time. The efficiency is greatly improved. It has a broad application prospect in the field of gyro manufacturing. For high-precision rotors, laser dynamic balancing can double the balancing accuracy, and the balancing accuracy of its mass eccentricity can reach 1% or a few thousandths of a micron

laser etching technology is simpler than the traditional chemical etching technology, can greatly reduce the production cost, and can process 0.125 ~ 1 micron wide lines, which is very suitable for the manufacture of VLSI

laser fine adjustment technology can automatically fine adjust the specified resistance, with an accuracy of 0.01% ~ 0.002%, which is higher in accuracy, efficiency and lower in cost than traditional processing methods. Laser trimming includes trimming of thin film resistor (0.01 ~ 0.6 μ m thick) and thick film resistor (20 ~ 50 μ m thick), capacitor and hybrid integrated circuit

laser storage technology is a technology that uses laser to record video, audio, text and computer information. It is one of the supporting technologies in the information age

laser scribing technology is 8 It is a key technology for the production of integrated circuits that can realize the rapid/slow rise and fall adjustment of the beam when the sample is clamped. It has fine marking, high precision (the line width is 15 ~ 25 μ m, and the groove depth is 5 ~ 200 μ m), fast processing speed (up to 200 mm/s), and the yield can reach more than 99.5%

the use of laser cleaning technology can greatly reduce the particle pollution of processing devices and improve the yield of precision devices

laser thermal and surface treatment technologies include: laser transformation hardening technology, laser cladding technology, laser surface alloying technology, laser annealing technology, laser shock hardening technology, laser enhanced electroplating technology, laser glazing technology. These technologies play an important role in changing the mechanical properties, heat resistance and corrosion resistance of materials

laser phase transformation hardening (i.e. laser quenching) is a new process with the earliest research, the most rapid development and the widest application in laser heat treatment. It is applicable to most materials and different parts of parts with different shapes, and can improve the wear resistance and fatigue strength of parts. Some foreign industrial departments take this technology as a means to ensure product quality

laser cladding technology is one of the laser surface modification technologies widely used in industry. It has good economy and can greatly improve the corrosion resistance of products

laser surface alloying technology is a new method for local surface modification of materials. It is one of the surface modification technologies with the greatest application potential in the future. It is suitable for parts in aviation, aerospace, weapons, nuclear industry and automobile manufacturing that need to improve their wear, corrosion and high temperature resistance

laser annealing is a new process for semiconductor processing, and its effect is much better than that of conventional thermal annealing. After laser annealing, the substitution rate of impurities can reach 98% ~ 99%, which can reduce the resistivity of polysilicon to 1/2 ~ 1/3 of that of ordinary heating annealing, greatly improve the integration of integrated circuits, and reduce the spacing between circuit components to 0.5 μ M

laser shock hardening technology can improve the mechanical properties of metal materials, prevent the generation and propagation of cracks, improve the strength and hardness of steel, aluminum, titanium and other alloys, and improve their fatigue resistance

laser enhanced electroplating technology can improve the deposition rate of metal, which is 1000 times faster than that without laser irradiation. It is of great significance to the production and repair of micro switches, precision instrument parts, microelectronic devices and large-scale integrated circuits. The firmness of the electrodeposited coating can be increased by 100 ~ 1000 times by using this technology

laser is also widely used in electronic industry. It can be used for precision machining of micro instruments, fine slicing of fragile semiconductor materials, and adjusting the resistance of micro resistors. With the improvement of laser performance and the emergence of new lasers, the application of lasers in VLSI has become a key technology that can not be replaced by many other processes, showing an encouraging prospect for the development of VLSI

laser technology is the product of high technology, which has promoted the in-depth development of scientific research and opened up many new disciplines, such as nonlinear optics, laser spectroscopy, laser chemistry, laser biology, etc. Lasers are used to study the mechanisms of photosynthesis, hemoglobin, DNA and so on, which are closely related to life. Laser will also become a new standard for time and length. In the future, any high-precision clock and meter ruler can be calibrated with a specific wavelength of laser beam

lasers will also play an important role in the application of nuclear energy. Optimistic experts estimate that powerful lasers will produce safe and economical thermonuclear fusion by 2020, which is similar to the nuclear reaction process inside stars. If realized, thermonuclear fusion will bring enormous social and economic benefits, and the energy crisis will no longer exist. By that time, the electricity generated by hydrogen fusion in a barrel of water will be enough for a city to use

at present, laser technology has been integrated into our daily life. In the coming years, laser will bring us more miracles

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