Several Factors That May Affect The Quality Of Laser Cutting Processing

The quality of laser cutting refers to the accuracy of the cut size and the quality of the cutting surface. The quality of the cutting surface is generally measured with the following four indicators: whether the steel plate is cut flat, the wool -free or less edges, the range of the heat affected by the heat, the ripples of the processing part, and the surface of the cutting process.

Generally speaking, the quality of the quality of the laser cutting surface is:
1. The quality of the laser beam when cutting and processing must reach the standard. As we all know, the principle of laser cutting processing is also based on thermal effects. In order to ensure the accuracy of cutting products, the beam focuses on the diameter of time spots. At the same time, in order to ensure the consistency of cutting quality in different directions, the laser beam should have a good rotation symmetry and circular polarization of the light shaft and high emitting direction stability to ensure the stability of the location of the spot. Laser should have the function of fast switching between continuous and high -repeated output to ensure high -quality cutting of complex contour.
2. Focus on the thickness of the lens and the board. The focal length of the lens should be selected according to the thickness of the cutting material, and the diameter and depth of the focus point should be considered at the same time.
3, airflow and nozzle. The airflow in the laser cutting machine can blow away the melting material, protect the focusing lens, and even provide some cutting energy. Gas pressure and flow are important factor affecting the quality of cutting. If the pressure is too low, the melting material at the incision cannot be blown away. Too high, it is easy to form vortex on the surface of the workpiece, but weaken the airflow. Remove the function of melting materials. Practice has proved that the nozzles of different structures can also produce different effects when cutting.
4. The power density of laser will affect the cutting speed of laser cutting and processing, and the thickness parameters of the cutting material. For certain cutting conditions, there is a reasonable cutting speed range. The cutting speed is too high, the residue at the incision cannot be cleared, or even the cutting speed cannot be completely cut. The cutting speed is too low.
5. The cutting trajectory, for the complex contour or the cutting parts with an inflection point, due to changes in the acceleration, it is easy to overheat at the inflection point to form a collapse. Therefore, a reasonable cutting trajectory is one of the effective ways to avoid this phenomenon.