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Metal laser cutting machine the main process parameters affecting the cutting quality
by：Transon
2020-10-30
Metal laser cutting machine main process parameters within capacity
1, the cutting speed for a given laser power density and material, the cutting speed in accordance with an empirical formula, just above the threshold, material cutting speed is proportional to the laser power, which increase the power density, can improve the cutting speed, cutting speed and the same cutting material is inversely proportional to density and thickness, improve the cutting speed factor: ( 1) Improve the power ( 500 - 2000 w) ; ( 2) Change the beam pattern; ( 3) Reduce the focusing spot size ( If use short focal length lens) Other variable to hold the same process for metal materials, laser cutting speed can have a relatively adjusting range remained satisfactory cutting quality, and the adjusting range is wider than the original when cutting thin metal,
2, focus position after focusing laser beam spot size is directly proportional to lens more grown up, after short focal length lens to focus the light beam spot size is small, the focus in high power density, the material cutting is very good, but it is bad outside the focal depth is very short, adjust the margin is very small, is generally applicable to the high speed cutting BoCai, for thick workpiece, due to the long telephoto lens has a wide depth of focus, as long as have the enough power density, used for cutting it is more appropriate, because the focus in high power density, in most cases, the cutting, the focus position just at the surface, or slightly below the surface, the relative position to ensure focus and workpiece constant is important condition to obtain the stable cutting quality, sometimes lenses work because of poor cooling and heat causing focal length changes, it's need to adjust the focus position.
3, auxiliary gas auxiliary gas and laser beam coaxial spray, protect the lens from pollution and blow away the cutting area at the bottom of the slag, the non-metallic and part of metal materials, the use of compressed air or inert gases, melting and evaporation materials, and curb excessive burning cutting area.
1, the cutting speed for a given laser power density and material, the cutting speed in accordance with an empirical formula, just above the threshold, material cutting speed is proportional to the laser power, which increase the power density, can improve the cutting speed, cutting speed and the same cutting material is inversely proportional to density and thickness, improve the cutting speed factor: ( 1) Improve the power ( 500 - 2000 w) ; ( 2) Change the beam pattern; ( 3) Reduce the focusing spot size ( If use short focal length lens) Other variable to hold the same process for metal materials, laser cutting speed can have a relatively adjusting range remained satisfactory cutting quality, and the adjusting range is wider than the original when cutting thin metal,
2, focus position after focusing laser beam spot size is directly proportional to lens more grown up, after short focal length lens to focus the light beam spot size is small, the focus in high power density, the material cutting is very good, but it is bad outside the focal depth is very short, adjust the margin is very small, is generally applicable to the high speed cutting BoCai, for thick workpiece, due to the long telephoto lens has a wide depth of focus, as long as have the enough power density, used for cutting it is more appropriate, because the focus in high power density, in most cases, the cutting, the focus position just at the surface, or slightly below the surface, the relative position to ensure focus and workpiece constant is important condition to obtain the stable cutting quality, sometimes lenses work because of poor cooling and heat causing focal length changes, it's need to adjust the focus position.
3, auxiliary gas auxiliary gas and laser beam coaxial spray, protect the lens from pollution and blow away the cutting area at the bottom of the slag, the non-metallic and part of metal materials, the use of compressed air or inert gases, melting and evaporation materials, and curb excessive burning cutting area.
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