Views: 1 Author: Site Editor Publish Time: 2022-03-30 Origin: Site
How to do a good job of cleaning and maintenance of laser protective lenses
In the laser cutting machine optical path system in the protection lens is a consumable, in order to minimize the cost of use, the lens should be cleaned in strict accordance with this specification. In the process of cleaning and replacing the protective lenses, the placement, testing and installation of the protective lenses should be careful to avoid making the lenses contaminated or damaged as much as possible. After the installation of new lenses, the protective lenses should be checked regularly and cleaned in time.
The following measures are used on a daily basis.
1. before removing the protective lenses, it should be ensured that the cutting head is clean around the window of the protective lenses and that there is no fan blowing in the direction of the cutting head so that the airflow does not bring dust inside the cutting head when removing the protective lenses, leading to internal contamination.
2. do not install the lenses with bare fingers, but must wear powder-free finger covers or rubber/latex gloves.
3. not to touch the film layer and the mirror surface when taking the lenses, but to hold the edges of the lenses and place them on the wipe paper.
4. shall avoid talking over the lenses and keep all contaminants away from the work environment as much as possible
The following cleaning steps are used on a daily basis.
Flexible cleaning for lightly contaminated lenses (dust, fiber particles)
Blow off any contaminants scattered on the surface of the lenses with a blowing airbag or cleaning air. If this step does not remove the contamination, continue with step 2.
Note: Avoid using shop air ducts as they usually contain high levels of oil and water. These contaminants can form a harmful absorbent layer on the lens surface.
Flexible cleaning for lightly contaminated (stains, fingerprints) lenses
Moisten a special unused cotton swab with a cleaner such as acetone or anhydrous ethanol and gently wipe the surface of the lens (do not rub hard), dragging the wet swab slowly over the surface of the lens so that the liquid left behind the swab evaporates just immediately. This will leave no traces. If this step does not remove the contaminant, continue with step 3.
For moderately contaminated (saliva, oil) lenses, clean moderately
Moisten an unused swab with 6% distilled white vinegar and wipe the lens surface with light pressure, wipe off excess distilled vinegar from the lens surface with a clean dry swab, followed by gently wiping the lens surface with a swab moistened with acetone to remove all acetic acid. If this step does not remove the contaminant, continue with step 4.
Aggressive cleaning of heavily contaminated (splash) lenses
(Note: Step 4 should never be used on new or unused laser lenses. This step should only be used if the lens has been heavily contaminated in use and acceptable cleaning results have not been achieved after performing Step 2 or Step 3, and there is no guarantee that the lens will function properly after performing Step 4).
Severely contaminated or dirty lenses may require the use of an optical polishing solution to remove contaminants from the lens surface.
-Shake the polishing solution container well before use. Pour out four to five drops of polishing solution and place them on a cotton ball. On the surface of the lens to be cleaned, gently move the cotton ball in a circular motion using its own weight (do not press on it!) Do not over polish in one direction, but keep rotating the lens. The time taken to clean the lenses should not exceed half a minute. If, during this step, you notice a change in the color of the lens surface, the outer layer of the lens film is corroded and you should stop cleaning immediately.
-After applying the polishing solution, moisten an unused cotton swab with distilled water and gently wipe the surface of the lens with it, thoroughly wetting the surface of the lens and removing as much of the polishing solution residue as possible. Do not allow the lens surface to become dry. This will make it more difficult to remove the polish residue.
Quickly moisten a lint-tipped swab with anhydrous ethanol and then gently clean the lens surface thoroughly with it. Cover the entire surface with the head of the swab to remove as much polish residue as possible.
-Wet the lint-tipped swab with acetone and use it to clean the lens surface to remove any anhydrous ethanol and polish residue left behind during the cleaning process. When doing the final cleaning with acetone, gently drag the swab over the surface of the lens, wiping away any traces left behind until the entire surface is wiped clean. Make a final wiping motion with the swab, moving it slowly to ensure that the surface behind the swab dries immediately, which will eliminate surface streaks. Certain types of contamination or damage (e.g., metal spatters, pits, etc.) cannot be removed. If the lens surface is contaminated or damaged as described above and cannot be cleaned and restored, the cleaning should be abandoned and replaced with a new lens to ensure the quality of the cut.
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