Laser processing speed, the smaller range of the processing object heated and does not produce noise. The movement speed of the laser beam energy and beam can be adjusted so the laser processing can be applied to the different levels and scope. At present, the generally accepted principle of laser processing are two: laser thermal processing and photochemical processing (also known as cold). Laser thermal processing means when the laser beam to the surface, causing rapid heating, and thermal properties of an object changes or material melting evaporation. Thermal processing has a high energy density laser beam (which is a concentrated energy flow), and irradiation on the material surface, the surface absorption of laser energy. Supply green laser pointer to the customer according to the specific requirements.
Within the irradiated region, the thermal excitation process, so that the material surface (or coating) temperature rise, resulting in abnormal, such phenomena as melting, ablation, evaporation photochemical processing means when the laser beam and in the objects, high-density energy photon trigger or control The photochemical reaction process. cold with a high load energy (UV) photons, can interrupt the material (in particular, the chemical bonds within the organic material) or the surrounding medium, to make the material non-thermal process destruction. The cold laser marking processing has special significance, because it is not a thermal ablation, but does not produce side effects of the thermal damage, break chemical bonds the cold peel. The appearance, parameters or performances of laser pointer can be made specially.
Which the inner layer of the surface to be machined and the nearby area does not produce heating or thermal deformation of the role of the development of laser processing of the laser processing is a fast developing new technologies, has become the key technology and equipment to develop new industries and transform traditional manufacturing a. A variety of laser (marking, welding, fine-tuning, drilling, cutting, scribing, heat treatment) systems, equipment, have been or are entering in various industrial fields, such as electronics, light industry, packaging, gifts, hardware, industrial, medical equipment, automotive provide advanced technical equipment, machinery manufacturing, steel, metallurgy, oil, etc., for the modernization of the technological transformation of traditional industries and manufacturing. The appearance of green laser is of the special design.
In China there is a huge laser processing applications market, and global manufacturing base in this market due to China's accession to the WTO since the country is rapidly formed by the rapid growth. Domestic and foreign investors and the laser industry is a beachhead in this market. Therefore, China's laser processing technology market will grow rapidly, will accelerate the achievement of laser processing technology industry. At home and abroad in lasers and laser processing technology research and development, production and operation enterprises are facing a great opportunity and challenge. International market, according to the statistics of ILS, the output value of the global industrial laser systems in 1997, $ 2,063,000,000 to $ 2,338,000,000 in 1998, $ 2,591,000,000 in 1999, has maintained an annual growth rate from 1997 to 1999, output value of industrial laser systems about 13%. The parameter of usa green laser pointer has to be revised to the best situation.
2000 global industrial output value of the laser system is only $ 2.776 billion (about 22.9 billion yuan), its annual growth rate dropped to about 7% to start by the dot-com boom, the United States and worldwide economic recession. The economic recession in 2001 the semiconductor industry has been hit hard, semiconductor manufacturing, materials processing, marking and micromachining industries affected, such as excimer lasers for lithography equipment for semiconductor processing measurement system He- Ne laser sales in serious decline. In addition, due to the downturn in the telecommunications industry to make the fiber grating overproduction, leading to the excimer laser used in the manufacture of the grating, metal vapor laser, or argon ion lasers, there is no market. The performance of green laser pointer is in the best status.
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