What are the factors related to the cutting speed of the fiber laser cutting machine

The cutting speed of laser cutting machines is a concern of many processing companies, because the cutting speed determines the production efficiency, that is to say, the faster the speed, the higher the overall output. This article mainly explains the factors that affect the speed of the laser cutting machine, the influence of the cutting speed of the laser cutting machine on the cutting quality, and how to improve the cutting speed of the laser cutting machine.

Factors affecting the cutting speed of a laser cutting machine:

The laser power density of a laser cutting machine is a factor that can directly affect the cutting speed. Under the same conditions of other factors, only changing the laser power density, the cutting speed of the material is proportional to the laser power density, that is, increasing the power density can increase the cutting speed. The cutting speed is also inversely proportional to the density of the material being cut. The thicker the sheet, the slower the cutting speed is when other parameters are the same.

The factors that affect the laser cutting speed are not only related to the laser output power, but also related to the beam quality mode. According to the characteristics of the beam focusing system, the spot size also has a great influence on the cutting speed of the equipment.

The influence of the cutting speed of the laser cutting machine on the cutting quality:

1. When the cutting speed is too fast, the gas coaxial with the beam cannot completely blow off the cutting residue. The molten material on the side gathers and solidifies at the bottom edge, forming dross that is not easy to clean. Excessive cutting speed will also cause the material to be unable to be completely cut through, and there will be a certain thickness of adhesion at the bottom. Usually the adhesion thickness is very small, and the subsequent manual hammer can be used to fall off.

2. When the cutting speed is appropriate, the cutting quality can be improved, the cutting seam is small and flat, the cutting surface is smooth and free of burrs, and the whole workpiece has no deformation, and the workpiece can be put into use without processing.

3. When the cutting speed is too slow, the high-energy laser beam stays everywhere for too long, and the thermal effect is obvious, which will cause obvious overmelting on the opposite side of the cutting, and overmelting on the top of the cutting Phenomenon, obvious dross will appear at the bottom, and the cutting quality is very unsatisfactory.

How to improve the cutting speed of laser cutting machine?

1. Increase the power and choose a higher power laser generator, such as 10mm stainless steel. The 6000W power can basically cut to 1.8m/min, and the 12000W power can cut to 6m/min.

2. Reduce the size of the focused spot, and use a short focal length focusing lens to focus, so that a smaller spot can be obtained.

3. Adjust the appropriate process parameters, and adjust the output power, duty cycle, positive and negative focal length and other parameters to optimize the cutting speed.

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