About Protective Lenses For Laser Cutting Machines

I believe everyone is familiar with laser cutting machines. With the gradual increase in the thickness of processed metal sheets, 10,000-watt laser cutting machines are more and more widely used. Users often ask why the protective lens of the laser cutting head burns out during the operation of the laser cutting machine. . So, what is the reason for the burnout of the protective lens of the laser cutting head? How to effectively prevent the protective lens from burning out?

The role of the protective lens of the laser cutting head

The protective lens is a very important precision component in the optical path system of the laser cutting machine. The laser cutting head will gather a lot of energy during processing. In order to block dust and slag splashing and protect the internal optical path and core components of the laser cutting head, the laser cutting head needs to be installed and protected. Lens, effectively protect the laser cutting head from damage.

The reasons for the burnout of the protective lens

The protective lens of the laser cutting machine is easy to burn out. Most of the cases are due to improper equipment maintenance. For example, the lens has dust pollution and the light is not stopped in time, the temperature of the protective lens is high and there is moisture; the auxiliary gas blown out is not pure, the pressure does not meet the standard, and the laser is emitted. The optical path deviation, the large aperture of the cutting nozzle, the use of inferior protective lenses, the collision of the protective lenses with other objects, etc., will all have an impact on the protective lenses. It is easy to cause the lens to burn or crack.

The protective lens of the laser cutting machine is a consumable wearing part and generally needs to be replaced in time. When the power is increased to more than 10,000 watts, once dust pollution occurs on the lens, and the light is not stopped in time, the burning point deteriorates, and the energy absorbed instantly increases, and it is easy to burst. When the protective lens is at a high temperature, if there is moisture on the protective lens, it may burst.

How to protect lenses from damage

There are many reasons for affecting the service life of the protective lens. When we use the cutting machine, we can use the following methods to protect the lens from damage.

Reasonably set the number of perforations

The higher the output frequency of the laser cutting machine, the easier it is to cause perforation and sputtering damage to the lens. Therefore, when using the laser cutting machine, we should set the perforation parameters as reasonably as possible to protect the lens.

Do a good job of cleaning and dust removal

Regularly check the protective lens and remove the stains and liquids on the lens in time. Do not pay too much attention when cleaning to prevent damage to the lens. Before using a new protective lens, the lens should be cleaned and dusted before use.

Check the operating status of the air compressor

In addition to checking the laser cutting head and protective lenses, it is also necessary to regularly check whether the operation of the air compressor and dryer is normal.

The explosion of the protective lens can easily cause the failure and damage of the laser cutting head, so in the process of using the equipment, we must pay attention to the maintenance of the equipment. Protective lenses can be reused for a long time, prolonging the service life and saving costs.