The optical lens of the fiber laser cutting machine is a consumable product. In order to extend the service life and reduce the use cost as much as possible, the maintenance and cleaning of the lens must be strictly regulated. After a new lens is installed, it should be cleaned regularly. Of course, cleaning lenses can’t be the same as cleaning glasses, you must pay more attention. If the cutting effect is affected, the lens needs to be replaced in time. During the replacement process, the placement, inspection, and installation of optical lenses must be done to prevent damage and contamination of the lenses.
Lens replacement
If there is no professional cleaning, and you are worried about secondary pollution or damage to the lens during the cleaning process, you can ignore the cleaning step and it is recommended to replace the lens directly; if the lens has been burned out by metal splashes and dirt, it is necessary to restore good Performance, the only way is to replace the lens.
Lens cleaning points
In the laser cutting process, when contaminants fall on the surface of the lens, energy will be absorbed from the laser beam, resulting in a thermal lens effect. If the lens has not yet formed thermal stress, the operator can disassemble it and clean it.
First: the contact points of the lens
During the installation and cleaning of the lens, any sticky matter, even nail marks or oil drops, will increase the absorption rate of the lens and reduce the service life.
In general, the following precautions are used:
1. Never install the lens with bare fingers. Wear finger cots or rubber gloves.
2. Do not use sharp instruments to avoid scratches on the surface of the lens.
3. Do not touch the film when taking the lens, 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 workbench should have several layers of cleaning paper towels and several sheets of lens cleaning tissue on the surface.
5. The user should avoid talking above the lens, and keep food, beverages and other potential contaminants away from the work environment.
Second: How to clean the lens
In the process of cleaning the lens, a method with relatively low risk should be adopted. In order to minimize the risk, sort out the following steps:
1. First, use an air ball to blow off the floating matter on the surface of the component, especially the lens with tiny particles and floccules on the surface. This step is necessary, but do not use compressed air on the production line, because the air will contain Oil and water droplets will deepen the pollution of the lens.
2. In the second step, apply acetone to lightly clean the lens. This grade of acetone is almost anhydrous, which reduces the possibility of lens contamination. The cotton ball must be dipped in acetone and the lens must be cleaned under light and moved in a circular motion. Once the cotton swab is dirty, it must be replaced. The cleaning should be done at one time to avoid the formation of crevices. (If the lens has two coated surfaces, such as a lens, each surface needs to be cleaned in this way. The first surface needs to be placed on a layer of clean lens paper for protection.)
3. If acetone cannot remove all the dirt, use acid vinegar to clean it next. Acid vinegar cleaning uses the dissolution of dirt to clean the dirt, but it will not cause damage to the optical lens. This acetic acid can be experimental grade (diluted to 50% strength), or white vinegar with 6% acetic acid for household use. The cleaning procedure is the same as that of acetone, and then acetone is used to remove the acid vinegar and dry the lens. At this time, the cotton ball should be changed frequently to absorb the acid and hydrate. Until it is cleaned.
4. When pollutants and lens damage cannot be removed by cleaning, especially the film burned due to metal splash and dirt, the only way to restore good performance is to replace the lens. Try to wear gloves or finger cots when changing lenses to prevent contamination of the lenses.
Note: During the installation process, if the method is incorrect, the lens will be contaminated. Therefore, the operating procedures mentioned above must also be followed. When the lens is properly cleaned and operated, its service life and performance will undoubtedly be affected. Significant improvement is also one of the important ways for the life and stability of the laser cutting machine. Taking some preventive and maintenance measures will ensure that the laser cutting machine works longer and has higher stability.
Guohong Laser, professional manufacturer of optical fiber laser cutting machine!
For more information about fiber laser cutting machine, please kindly send an inquiry, our sales manager will send you technical solutions right away.
Post time: Sep-24-2021