Heat-affected area, it means that during the processing, the area along the laser incision is heated, causing a certain change in the structure of the metal, which causes the metal to harden.
The presence of heat-affected areas is disadvantageous for metal sheet laser cutting machine, especially for the surface of the sheet metal and the smoothness of the edges.
In addition to causing hardening of the metal, the heat-affected area may cause dents and corrosion on the edges of the metal, which may lead to errors in the actual processing.
For the metal sheet laser cutting machine, especially in the precision machining process, the slight change will lead to the error of the precision of the sheet metal part, which directly affects the processing quality.
The roughness of the laser-cut surface depends mainly on the following three aspects:
1. Intrinsic parameters of the cutting system, such as spot mode, focal length, etc.
2. Process parameters that can be adjusted during the cutting process, such as power size, cutting speed, auxiliary gas type and pressure;
3. Physical properties of the processed material, such as the absorption rate of the laser, the melting point, the viscosity coefficient of the molten metal oxide, the surface tension of the metal oxide, and the like.
In addition, the thickness of the workpiece also has a large effect on the quality of the laser cut surface. In contrast, the smaller the thickness of the metal workpiece, the higher the roughness level of the cutting surface.
Therefore, choosing a suitable metal sheet laser cutting machine has a positive effect on improving production efficiency.
The above is a brief introduction to influence of heat-affected area on cutting quality.
If you have any other questions, please contact Perfect Laser in time.