What are the latest applications of laser?

Laser beams have a series of advantages such as good monochromaticity, high energy density, good spatial and temporal control, and so on , and it is now widely used in materials processing and other fields. Laser processing industries include automotive manufacturing, aerospace, electronics, chemical, packaging, medical equipment and so on. Combined with computer numerical control technology, laser processing technology has become the key technology of industrial production automation, with the advantages of ordinary processing technology can not be compared. For example, laser processing is non-contact processing, fast speed, no noise, can realize a variety of complex shapes of high-precision machining purposes, and no general sense of "tool" wear, no need to replace the "cutter head". Laser Welding of Plastics 1. Advantages of Laser Welding of Plastics With the increasingly widespread use of plastics in the design and manufacture of automotive, medical equipment, and electronics and other industries, the use of high-power fiber laser plastic welding systems can fully meet the processing of plastic products in the process of fast, effective and clean plastic use of high-power fiber laser plastic welding systems can fully meet the processing of plastic products in the process of fast, effective and clean plastic use. Plastic welding method.　　At present, the domestic market commonly used plastic welding technology is mainly vibration friction welding, hot plate plastic welding and ultrasonic welding and so on. Mainly used for connecting sensitive plastic products (including circuit boards), plastic parts with complex geometry and plastic products with strict cleanliness requirements (medical equipment) and so on. Fiber laser welding plastic technology mainly has the following advantages: (1) can generate precise, firm and sealed (impermeable and watertight) welding, less resin degradation, resulting in less debris.　　(2) Easy to control, good adaptability, can be welded small size or complex shape and structure of the workpiece.　　(3) Greatly reduces vibration and thermal stresses on products.　　(4) It can weld many kinds of different materials together. Laser plastic welding technology in Europe and the United States and other developed countries have been applied to a certain extent, China in this regard is still a blank.　　2 plastic laser welding welding method The basic principle of laser welding plastic is, two kinds of plastic under low pressure is clamped together, the laser passes through a product, and then be absorbed by another product, absorbing the laser energy products will be converted into heat energy, in the plastic contact surface melting, forming a welded area.　　Commonly used welding methods are: a. The laser beam is rapidly scanned along the weld seam to achieve the purpose of welding. b. The laser beam is passed through an optical component to the weld zone.　　b. Through the optical components of the laser beam shaping, while in the weld to generate heat.　　c. irradiation mask welding, the laser beam is only heated products on the part not covered by the mask, can quickly weld complex welds.　　d. Laser beam fixed, plastic workpiece placed on the program-controlled multi-dimensional movable workbench. Third, high-power fiber laser in the shipbuilding industry in the application of 1. Laser processing technology in the shipbuilding industry in the application of the advantages of the shipbuilding industry in the main advantages of laser processing: (1) ships and ships loaded with the increasing altar plus, the requirement to use a very thin flat plate, laser welding to avoid the processing of thermal effects; (2) laser can be used in fiber optic and other flexible output, so the deck, hull, and other large-surface size of workpiece processing can not be affected by the size of the worktable. The laser can be used in flexible output methods such as fiber optics, so workpieces with large surface dimensions such as decks and hulls can be processed regardless of table size.　　(3) Non-contact, high speed, smooth edges, and a high degree of automation greatly reduce the cost and time of shipbuilding.　　(2) The current development situation in Europe and the United States and Japan's major large shipyards have been a large number of laser processing technology. At present, the United States, Europe and other regions are carrying out the development of high-power fiber laser industrial processing equipment, are developing 2KW, 6KW output industrial-grade fiber laser processing equipment for secondary development. China has developed a small and medium power series of industrial fiber laser equipment, but the application of high-power fiber laser industrial processing is still a blank, in China's shipbuilding industry has almost no use of laser processing technology.　　3. High-power fiber laser in the shipbuilding industry in the advantages and prospects Fiber laser is the laser field in recent years is extremely concerned about the hot spot in the processing field of fiber laser has rapidly replaced the traditional YAG, C02 laser trend. It is widely believed that high-power fiber laser will be the third generation of the most advanced industrial processing lasers Fiber laser has many unique advantages, good beam quality; small size, light weight, maintenance-free; air-cooled simple and easy to operate parts; low operating costs, can be used in industrial environments; long life span of high processing accuracy, speed; high efficiency of electrical energy conversion, can achieve intelligent, automated, flexible operation, and so on. Based on the above advantages, its application areas have been expanded to automotive manufacturing, shipbuilding and aviation manufacturing industry, metal and non-metallic materials, laser cutting, laser welding and other aspects

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