Friday, September 7, 2012

This emitter of green laser pointer

Non-metallic materials for laser cutting of nonmetallic materials is a good absorber of CO2 laser beam wavelength of 10.6 μm, due to its small thermal conductivity, heat conduction loss is small, can absorb almost all incident beam energy, and soon the material evaporation at the spot irradiation, the formation of the starting hole, into a virtuous cycle of the cutting process. Poor thermal conductivity and almost no plastic ceramic material, hot and cold processing are difficult. Laser cutting of ceramics and oxygen assist cutting mechanism of the metal material is very different, it belongs to the controlled-oriented fracture. After finishing the code pair process, all receivers of  green laser pointer will store the same address code.
When the laser beam along a predetermined cutting direction when heated, a small area around the spot, caused by the directional gradient of the heating and consequent generation of high mechanical stress. This high stress ceramics such brittle materials, the formation of small cracks. As long as the process parameters and control the proper crack will be strictly along the beam direction of movement evolving in order to cut off the material. Corundum materials such as microelectronic devices, 250W power laser beam will be able to accurately specify the parts cut out to size after cutting particle tear and does not require subsequent treatment. And at the same time, the laser bema of  green laser pointer  has the following features. The field staff must wear protective glasses for laser opaque filter depending on the laser wavelength selection. Wavelength 10.6um the CO2 laser can wear ordinary glasses or sunglasses side protection. The laser processing area should be wearing white overalls, in order to reduce the impact of the laser diffuse reflectance. This emitter of  green laser pointer needs to perform the code pair process with every receiver.
Laser cutting technology. Laser cutting is the most important one in the laser processing industry application technology, has many features, has been widely used in automotive, rolling stock manufacturing, aviation, chemical industry, light industry, electrical appliances and electronics, oil and metallurgical and other industrial sectors. In recent years, laser cutting technology development quickly, the international community every year to a rate of 20% -30% growth. China since 1985, but the growth rate of more than 25% per annum. Due to the poor foundation of China's laser industry, laser processing technology is not yet common, the overall level of laser processing is still a large gap compared with advanced countries. There exists a memory inside the receiver of green laser pointer .

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