With the gradual increase in the thickness of metal sheets processing, high-power fiber laser cutting machines are more and more widely used. Some guests will find that the protective lenses of the laser cutting head burn out during the operation. So, why does the protective lens burn out? What we can do to prevent it? Let’s check together.
Function of the protective lens
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 to protect the internal optical path and core components of the laser cutting head, protective Lenses are needed to be installed.
Why does protective lens burn out?
If the protective lens is easy to burn out, it’s due to improper maintenance. For example, when the lens has dust pollution, the light is not stopped in time, the temperature of the protective lens is high and there is water above it; the auxiliary gas is not pure, laser light path offset, the nozzle aperture is too large, protective lenses are not good quality, protective lenses collides with other objects, etc., these will all have an impact on the protective lenses and easy to cause the lens to burn or crack.
The protective lens of the laser cutting machine is a consumable 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, and the energy absorbed instantly increases, then lens is easy to burst. When the protective lens is at a high temperature, if there is water on the protective lens, it may burst.
How to protect lenses from damage
1. Reasonably set the number of perforations
The higher the output frequency of the laser cutting machine, the easier it is to cause 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.
2. Clean and remove dust well
Regularly check the protective lens and remove the stains and liquids on the lens in time. Don’t push it too hard when cleaning to prevent damage to the lens. Before using a new protective lens, the lens should be cleaned before use.
3. 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 damage of the protective lens can easily cause damage of the laser cutting head, so in the process of using the equipment, we must pay attention to the maintenance of the equipment, so that protective lenses can be reused for a long time to prolonging the service life and saving costs.
Newlaz provide all kinds of consumables for different laser cutting head brand, especially protective lenses with different size, which have been sold to different country and get good feedback from customers. If you have some demands, don’t hesitate to contact us.
