ProCutter Tips: Safe Use for Kevollaser Machines

ProCutter is a key component of Kevollaser’s laser machines. Proper use of ProCutter ensures long machine life and stable cutting performance. This guide shares critical usage tips to avoid common issues like contamination, wear, and part damage.

1. Avoid Fiber End Contamination

Always handle fiber plug in a clean space. Keep both the fiber end and the fiber interface interior clean. Most contaminants on the cutting head’s internal lenses come from the fiber. A dirty environment during fiber handling will raise contamination risks for the cutting head.

2. Prevent Fiber Interface Metal Wear

Check the electrode wear inside the fiber interface visually when plugging or unplugging the fiber. Two main causes lead to metal wear:

• The fiber does not insert into the correct position of the interface, such as missing the red marker area.
• You start rotating the fiber before it reaches the right position, making the interface lock the fiber early.

Metal wear in this area creates metal shavings. These shavings fall on the collimator protective lens surface due to gravity. This will eventually burn the protective lens.

3. Protect PIN Needle from Wear

The PIN needle inside the cutting head’s QBH fiber interface can wear if you handle fiber plug incorrectly. External force on the PIN needle produces metal shavings. When these shavings fall, they contaminate the collimator protective lens surface and cause burns. Use only your thumb and index finger to twist the interface knob. Too much force will damage the PIN needle.

4. Stop Condensation from Temperature Differences

Set the water cooling temperature using the chart from Precitec China’s technical support WeChat account. Monitor the production site’s temperature and adjust the cooling temperature promptly. If the cooling water temperature is lower than the dew point, condensation will form. This moisture can enter the cutting head when you plug or unplug the fiber.

5. Keep ProCutter Exterior Clean

Wear on raised parts and the shape of recessed parts can trap contaminants. If you open the collimator protective lens in this case, the optical lenses will face direct pollution risks. This pollution can spread to the collimator and focusing lens, causing greater losses. Always keep the ProCutter’s exterior clean.

6. Seal the Cutting Head Timely

You need to remove the protective lens drawer when checking or replacing the protective lens on-site. Seal the cutting head immediately to stop contaminants from entering and polluting the optical path. Note: Only check the collimator protective lens cleanliness after fiber plug. Do not open it for checks in other situations.

7. Replace Damaged Protective Lenses

Never use a protective lens with burn marks. Replace it right away if you see any. Damaged coatings will deflect the laser, such as scattering it to the cutting head’s inner wall. This causes temperature rise and harms other lens surfaces, leading to bigger losses.

8. Do Not Flip the Lower Protective Lens

If you find contamination or damage on the lower surface of the lower protective lens, do not flip it for use. Flipping the lens will damage the focusing lens protective lens.

9. Check and Replace Sealing Rings

Check the sealing ring’s wear condition when inspecting the protective lens. If the cutting head works well, check the sealing ring every three days. Clean it with anhydrous ethanol if it is dirty. Replace it with a new part if you find cracks. A broken sealing ring reduces sealing performance and increases internal contamination risks for the cutting head.

Use coolant to cool the sealing ring before installing it into the protective lens drawer. Installing it without cooling will damage and deform the ring. This directly weakens its sealing function.

10. Ensure Cutting Gas Cleanliness

Test the gas and gas pipeline cleanliness before using the cutting gas. Look for contaminants like residues, moisture, and oil. Impure gas will make the protective lens get dirty more often, increasing replacement frequency. In severe cases, it clogs the gas path and reduces cutting quality.

11. Avoid Sealing Agents for Gas Paths

Never use sealant or Teflon tape when connecting the cutting head’s gas path interface. Residues from these materials can enter the gas path and block it completely. This will stop the cutting head from working normally.

12. Key Steps for Fiber Plugging/Unplugging

Follow these steps to handle fiber plug correctly and protect the ProCutter:

1. Only replace the fiber and laser head if it is really necessary.
2. Do not open the optical channel.
3. Clean the fiber plug, cover ring, and fiber port with a damp cloth.
4. Adjust the laser head to keep the fiber port in a horizontal position.
5. Turn the sealed cover ring.
6. Keep the fiber and laser head’s protective covers in a clean space.
7. Remove the fiber plug carefully.
8. Cover the fiber port with a protective film and the fiber plug with a cap.
9. Prepare clean materials or tools and place them near the laser head in a clean area.
10. Do not leave the laser head or fiber exposed for a long time without protection.
11. Check or replace the fiber or laser head.
12. Ensure the extra dust-proof ring stays on the fiber at all times.
13. Reconnect the fiber.
14. Use optical tape for protection (it dash-proof and removes dust when peeled off). Wrap the tape 3 to 4 times tightly around the joint of the fiber plug and port.

Label the parts as follows for clarity: 1. Fiber plug; 2. Dust-proof tape (flexible, silicone); 3. Fiber port; 4. Collimator module.

Reminder: Following these ProCutter tips will extend your Kevollaser laser machine’s service life. Contact Kevollaser support for more technical help if you face issues.