Laser cutting machine equipment is widely used in automobile, locomotive, pressure vessel, aerospace, nuclear industry, shipbuilding and steel structure industries. To use laser cutting machine equipment well, you should operate it with a full understanding of it, which can make full use of its advantages and avoid failures or certain unexpected situations.
Intrinsic parameters of the cutting system, such as spot mode, focal length, etc.; adjustable process parameters during cutting, such as power, cutting speed, auxiliary gas type and pressure, etc.; physical properties of the processed material, such as laser absorptivity, melting point, viscosity coefficient of molten metal oxide, surface tension of metal oxide, etc. 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 the metal workpiece, the higher the grade of the cut surface roughness.
To obtain a better surface quality level, the laser power, cutting speed and other process parameters must be optimized multiple times. Generally speaking, for materials with the same characteristics and thickness, there is a set of cutting process parameters, which will also result in different incision surface qualities. Metal materials have low melting points, large thermal conductivity, small melt viscosity coefficient, and small surface tension of metal oxides, so it is easy to obtain higher surface quality during laser cutting. It is easy to measure the surface quality when laser cutting a flat plate, but it is difficult to measure it directly when performing fine processing or cutting some complex patterns. The surface quality can only be controlled by optimizing the test parameters. Therefore, in order to facilitate the realization of automated cutting, a corresponding relationship between external optimization parameters and surface quality levels should be established.