The laser cutting produces a narrow切口 with parallel sides and perpendicular to the surface, ensuring the cut parts have a dimensional accuracy of ±0.05mm.
The cut surface is smooth and aesthetically pleasing, with a surface roughness of only a few micrometers. Laser cutting can even be used as a subsequent process, eliminating the need for mechanical processing, allowing the parts to be used directly.
Material after laser cutting has a very small heat-affected zone width, and the performance of the material near the cut seam is almost unaffected. Additionally, the workpiece deformation is minimal, the cutting precision is high, the geometric shape of the cut seam is good, and the cross-sectional shape of the cut seam presents a relatively regular rectangle. A comparison of laser cutting, oxygen-acetylene cutting, and plasma cutting methods is shown in Table 1, with the cutting material being 6.2mm thick low-carbon steel plate.