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The influence of factors on gas laser cutting is very large
by：Transon
2020-10-30
Optical fiber laser cutting machine in cutting will be affected by outside each, for example, auxiliary gas pressure in the process of cutting, will have great influence on the results of cutting.
gas pressure can increase cutting speed ahead of time, but after reaching a big value, continue to increase the gas pressure will cause the cutting speed. With aid of the high gas pressure, the reason of lower cutting speed in addition to boil down to the high air velocity on and hang a district enhanced cooling effect, also may be intermittent shock waves that exist in the air of district cooling the action of the laser interference. Exists in the airflow uneven pressure and temperature, can cause the change of airflow field density. Such a density gradient caused internal refractive index change to dry properly focused beam energy, focus or beam divergence. This kind of interference may affect the melting efficiency, sometimes may change the model structure, led to the decrease of the quality of the cutting, if the beam divergence too hard. Make the light is too large, and even can't effectively cut the serious consequences.
in order to avoid the high-speed airflow on the cutting performance of adverse reactions, can imagine change the distribution of total pressure in the air, because the air pressure distribution of the change, make the melting process occurred in the center of low pressure area; While the surrounding adjacent high can raise enough momentum ( Momentum) To ensure more effectively remove slag.
gas pressure can increase cutting speed ahead of time, but after reaching a big value, continue to increase the gas pressure will cause the cutting speed. With aid of the high gas pressure, the reason of lower cutting speed in addition to boil down to the high air velocity on and hang a district enhanced cooling effect, also may be intermittent shock waves that exist in the air of district cooling the action of the laser interference. Exists in the airflow uneven pressure and temperature, can cause the change of airflow field density. Such a density gradient caused internal refractive index change to dry properly focused beam energy, focus or beam divergence. This kind of interference may affect the melting efficiency, sometimes may change the model structure, led to the decrease of the quality of the cutting, if the beam divergence too hard. Make the light is too large, and even can't effectively cut the serious consequences.
in order to avoid the high-speed airflow on the cutting performance of adverse reactions, can imagine change the distribution of total pressure in the air, because the air pressure distribution of the change, make the melting process occurred in the center of low pressure area; While the surrounding adjacent high can raise enough momentum ( Momentum) To ensure more effectively remove slag.
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