The protective lens is a consumable item in the optical path system of the handheld laser welder. In order to reduce the use cost as much as possible, the lens should be cleaned in strict accordance with this specification. During the cleaning and replacement process, care should be taken to avoid contamination or damage to the lens when placing, testing, and installing the protective lens. After the new lens is installed, the protective lens should be checked regularly and cleaned in time.

Take the following measures on a daily basis:

1. Before removing the protective lens, make sure that the window of the protective lens of the welding head of the laser welding machine is clean, and no fan blows in the direction of the cutting head. pollute;

2. Do not install lenses with bare fingers, wear powder-free finger cots or rubber/latex gloves;

3 When taking the lens, do not touch the film layer and mirror surface, you should pinch the edge of the lens and place the lens on the lens wipe;

4. Talking over the lens should be avoided, and all contaminants should be kept away from the working environment as much as possible

Use the following cleaning steps on a daily basis:

step 1

Gentle cleaning for lightly soiled lenses (dust, fibrous particles)

Use a blower bladder or cleaning air to blow off contaminants scattered on the lens surface. If this step did not remove the contamination, proceed to step 2.

NOTE: Avoid using air ducts in workshops as they often contain a lot of oil and water. These contaminants can form a harmful absorbing layer on the lens surface.

Step 2

Gentle cleaning for lightly soiled lenses (stains, fingerprints)

Immerse an unused special cotton swab with a cleaning agent such as acetone or absolute ethanol, gently wipe the surface of the lens (do not rub hard), and slowly drag the wet cotton on the surface of the lens, so that the liquid left behind the wet cotton is just enough. Evaporates immediately. This way no traces will be left. If this step does not remove contamination, proceed to step 3.

Step 3

Moderate cleaning for moderately soiled lenses (saliva, oil)

Moisten an unused cotton swab with 6% distilled white vinegar and wipe the lens surface with light pressure. Use a clean dry cotton swab to wipe off excess distilled vinegar on the lens surface. Immediately soak a cotton swab with acetone and gently wipe the lens surface to remove all acetic acid. If this step does not remove contamination, proceed to step 4.

Step 4

Powerful cleaning of heavily soiled (splash) lenses

(Note: Step 4 should never be used on new or unused laser lenses. Use only if the lens has been heavily soiled in use and has not been cleaned to an acceptable level after steps 2 or 3 This step, and there is no guarantee that the lens can be used normally after step 4).

Severely soiled or dirty lenses may require an optical polishing solution to remove contamination from the lens surface.

a. Shake the polishing liquid container fully before use. Pour out four to five drops of polishing solution and place it on a cotton ball. On the lens surface to be cleaned, use the cotton ball's own weight to gently move the cotton ball in a circular motion (never press the cotton ball!), keep rotating the lens to avoid overpolishing in one direction. Cleaning the lenses should take no more than half a minute. If you notice a change in the color of the lens surface during this step, the exterior of the lens coating has been corroded and you should stop cleaning immediately.

b. After using the polishing solution, soak an unused cotton swab with distilled water, then gently wipe the lens surface with it to thoroughly wet the lens surface to remove as much polishing solution residue as possible. Never allow the lens surface to dry out. This can increase the difficulty of removing slurry residues.

c. Quickly moisten a cotton wool swab with absolute ethanol, then use it to gently clean the lens surface thoroughly. Cover the entire surface with the head of the cotton swab to remove as much polish residue as possible.

d. Moisten a cotton wool swab with acetone and use it to clean the surface of the lens to remove any absolute ethanol and polishing liquid residues that remained during the cleaning process. When using acetone for final cleaning, gently drag a cotton swab across the lens surface to remove any traces left until the entire surface is wiped clean. Make a final wipe with the swab, moving slowly to ensure that the surface behind the swab dries immediately, which eliminates streaks on the surface. Certain types of contamination or damage (such as metal spatter, potholes, etc.) cannot be removed. If the surface of the lens has the above-mentioned pollution or damage and cannot be cleaned and restored, the cleaning should be abandoned and replaced with a new lens to ensure the welding quality of the fiber laser welding machine.