The so-called heat affected zone refers to the process of processing, along the laser incision near the area heated, resulting in a certain change in the structure of the metal, this change will lead to the phenomenon of metal hardening. The existence of heat affected zone is disadvantageous for laser cutting, especially for the smoothness of sheet metal surface and edge. In addition to metal hardening, heat-affected zone can also lead to metal edge depression and corrosion, which may lead to errors in the actual processing. For laser cutting machine, especially in the process of precision machining, slight changes will lead to errors in the accuracy of sheet metal parts, which directly affects the processing quality.






In addition, the thickness of the workpiece also has a great influence on the surface quality of laser cutting. Relatively speaking, the smaller the thickness of metal workpiece, the higher the level of surface roughness. Therefore, the selection of a suitable laser cutting machine has a positive role in improving production efficiency.