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Is there any way to enhance the perforation technology of the laser cutting machine?

Views: 12     Author: Site Editor     Publish Time: 12-19-2021      Origin: Site

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Laser drilling is the earliest practical laser processing technology, and it is also one of the main application areas of laser processing. There are two types of perforation processes before cutting by the optical cutting machine: pulse perforation and blast perforation. The perforation process is very important. In thick plate cutting, poor perforation can easily lead to poor cutting and processing. Is there any way to enhance the perforation technology of the laser cutting machine? The Leapion laser analysis is as follows:

First, let’s look at the principles of pulse perforation and blast perforation:

1. Pulse perforation

The principle of pulse perforation is to use a pulsed laser with high peak power to melt or vaporize a small amount of material, and air or nitrogen is usually used as an auxiliary gas. Each pulse laser will produce a small particle jet, and gradually deepen until it penetrates the sheet, so the perforation time of the thick sheet is longer.

According to this cutting mode, the main way to change is the pulse width and frequency to achieve a common processing effect. As a cutting technology, laser cutting is formed through repeated perforation patterns, and then formed according to the alignment movement of the platform The cut crevices.

2. Blasting and perforation

The working principle of blasting perforation is that the material forms a pit in the center after continuous laser irradiation, and then the molten material is quickly removed by the airflow coaxial with the laser beam to form a hole. The size of the hole is related to the thickness of the plate, and the average diameter of the blasting hole is usually half of the thickness of the plate. For blasting and perforating thicker plates, the hole diameter will be larger and not round, so blasting and perforation usually need to be carried out on the waste area.

Comparing these two perforation methods, the perforation quality of pulse perforation is better than that of blast perforation, but due to the long perforation time, the cost of pulse perforation is higher.

The methods to enhance the perforation technology of the laser cutting machine are: enhancing the pulse output can optimize and improve the perforation quality and efficiency of the laser cutting machine.

1. In order to reduce the cost of pulse perforation and improve the efficiency of perforation, we can use continuous high-power fiber lasers with enhanced pulse technology: By optimizing the laser output, it provides pulse peak power far exceeding the rated average output power.

2. Compared with the conventional pulse output, after enhancing the pulse output, the punching efficiency is greatly improved

The average perforation efficiency of stainless steel plates with a thickness of 5mm or more increased by 55%, and the average efficiency of perforation for carbon steel plates with a thickness of 10mm or more increased by 80%.

It can be seen that for high-power fiber lasers, by increasing the peak power of the pulse, not only can the perforation time be shortened and the perforation efficiency can be improved, but the diameter of the upper and lower holes, the slag deposits and the heat-affected zone are all smaller.

For more information about the process and application of laser cutting machines, please contact Leapion Laser.


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