Compared with other thermal cutting methods, laser cutting is characterized by fast cutting speed and high quality. This is summarized in the following four areas.
1、The cutting quality is good
Because of the small laser spot, high energy density and fast cutting speed, laser cutting can obtain better cutting quality.
(1) Laser cutting cut cut narrow, cut side parallel and perpendicular to the surface, cutting part size accuracy of up to ±0.05mm.
(2) The cutting surface is beautiful, the surface roughness is only a few tens of microns, and even laser cutting can be used as the last process, without mechanical processing, parts can be used directly.
(3) After the material has been laser-cut, the width of the thermal influence area is very small, the performance of the material near the cut is almost unaffected, and the work piece deformation is small, the cutting precision is high, the geometry of the cut seam is good, and the cross-section shape of the cut seam presents a more irregular rectangle. A comparison of laser cutting, oxyacetylene cutting and plasma cutting methods can be found in Table 1, with a low-carbon steel plate with a cutting material of 6.2 mm thick.
2、High cutting efficiency
Due to the transmission characteristics of the laser, the laser cutting machine is generally equipped with multiple CNC workstations, the entire cutting process can be fully CNC. When operating, simply change the CNC program, you can apply different shapes of parts of the cutting, both for 2D cutting, but also for 3D cutting.
With a power of 1200W laser cutting 2mm thick low-carbon steel plate, cutting speed of up to 600cm/min, cutting 5mm thick polypropylene resin plate, cutting speed of up to 1200cm/min. Materials in laser cutting do not need to be clamped fixed, not only can save the tooling fixture, but also save the auxiliary time of the upper and lower materials.
4、 Contactless cutting
The torch does not come into contact with the work piece when laser cutting, and there is no wear on the tool. To machine parts of different shapes, there is no need to replace the "tool" or change the output parameters of the laser. Laser cutting process noise is low, vibration is small, no pollution.
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