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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