Laser protection lens original high power imported quartz
Laser protection lenses are wearing parts, which are used to protect the environment in the laser head cavity from external dust pollution, and are mostly used in laser cutting, welding, marking, cleaning, 3D printing, photovoltaic cells, lithium-ion new energy and other fields. The protective sheets on the market range from a few yuan to several thousand yuan. How to choose fiber laser protective lenses is the basic common sense that many novice buyers need to make up for.
Laser Protection Lenses
When choosing a laser protection sheet, you need to confirm the following indicators:
①Diameter and thickness: The outer diameter and thickness of the protective sheet. This indicator is the external dimension and the most basic confirmation value. Whether it can be properly installed should be accurate to 0.1mm.
②Applied power: not the power of the laser, but the actual applied power, which should be confirmed with the customer generally (the laser power is 6kw, and the actual operating power is 4kw, which is the applied power).
③ Band range: generally refers to the band range of the laser, and also consider whether it is multi-band.
④Material requirements: K9 and quartz are generally used for optical fiber, ultraviolet and green light. The co2 laser generally uses ZnSe zinc selenide.
⑤ Finish, transmittance, damage threshold, etc.
During the installation and cleaning of the lens, any sticky matter, or even oil droplets printed on the nails, will increase the absorption rate of the lens and reduce the service life. The following precautions must be taken:
1. Never install the lens with bare fingers. Finger cots or rubber gloves should be worn.
2. Do not use sharp instruments to avoid scratching the surface of the lens.
3. When taking the lens, do not touch the film layer, but hold the edge of the lens.
4. The lens should be placed in a dry and tidy place for testing and cleaning. A good bench surface should have several layers of cleaning paper towels and several sheets of cleaning lens tissue.
5. Users should avoid talking over the lens and keep food, beverages and other potential contaminants away from the work environment.
Laser cutting head protects the 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 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.
What are 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 that affect 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.
