Laser cutting machine control laser cutting method of roughness

The process of laser cutting machine laser cutting processing, to the roughness of the laser cutting is a requirement, especially the artifacts of medium plate, if you don't pay attention to in the process of cutting is likely to cause the mistake of cutting is usually required to control laser cutting machine cutting surface roughness. For more than 2 mm thickness plate laser cutting, cutting surface roughness distribution is uneven, along the thickness direction of the difference is very big, the change situation, there are two notable features: 1) The cutting surface topography is divided into different parts, the upper surface level off is smooth, neat cutting stripes, fine, roughness value is small; Lower cutting stripe is disorder, uneven surface, the roughness values. Upper has the characteristics of laser beam directly effect, lower has the characteristic of molten metal erosion. 2) Cutting surface part area of the surface roughness is substantially uniform, do not vary with height; And the surface roughness of the bottom area change with height, the more close to the edge, the surface roughness value, the greater the lower edge of the surface roughness of the big value. Both continuous laser cutting, laser cutting machine and pulse laser cutting, cutting surface shows have obvious upper and lower two parts, the difference is the pulse laser cutting on the part of cut stripe and pulse frequency have corresponding relationship: the higher the frequency, stripe is more close, the more the surface roughness value and continuous laser cutting when the cutting plane cutting groove density and surface coarse degree, mainly related to the cutting speed. So when evaluating cutting surface quality should be the following flange surface roughness as a benchmark. But the real edge is just a thread, it is difficult to measure roughness, this can be achieved by measuring the roughness of instead of near their inferior margin.