Comment remplacer la lentille de protection d'une machine de soudage laser portative ?

Juin 13, 2025

The protective lens of a handheld machine à souder au laser is prone to contamination or damage from splatter, fumes, or high temperatures during extended use. Replacing it in a timely manner helps protect the focusing lens, improve welding quality, and extend the lifespan of the equipment. The following are general steps applicable to most handheld laser welders:

Steps to Replace the Protective Lens:

1. Turn Off and Power Down the Machine

Switch off the main power of the laser welding machine;

Wait a few minutes to ensure there is no residual laser energy or heat.

2. Prepare Tools and Materials

A new protective lens (same model as the original);

Clean lint-free cloth or lens paper;

Lens cleaning solution (e.g., anhydrous alcohol);

Disposable lint-free gloves;

Screwdriver (if needed to remove the lens holder);

3. Disassemble the Lens Protector

Locate the protective lens housing at the front of the laser head;

Carefully unscrew the lens retaining ring or threaded cap;

Remove the old protective lens, avoiding dust entering the laser head.

4. Inspect and Clean the Lens Holder

Use lens paper with a small amount of alcohol to wipe the lens seat;

Check for debris or metal particles and clean thoroughly before proceeding.

5. Install the New Protective Lens

Wear lint-free gloves to avoid fingerprint contamination;

Ensure the new lens is clean and scratch-free, then place it into the lens seat;

Screw on the retaining ring (do not overtighten to avoid damaging the lens);

6. Check the Installation

Ensure the lens is seated flat and secure;

Restart the machine and test with low-power laser to check for proper beam alignment.

Notes:

Avoid excessive cleaning of the lens; replace it if scratched or heavily contaminated;

Always wear protective goggles and clean gloves when handling optical components;

Use original manufacturer parts to avoid beam distortion or leakage;

Regularly inspect the protective lens (e.g., weekly).

Let me know your machine’s brand and model if you need more specific instructions or part number recommendations.