Manhart How to deal with common faults when using a handheld laser welding machine?

When using a handheld laser welding machine, the methods for handling common faults need to be targeted according to the specific type and cause of the fault. Here is a summary of some common faults and their handling methods:
1. Excessive wear and tear on the protective lens of the welding gun head:
-Reason: The protective lens may be damaged during welding due to sparks falling into the gun head.
-Handling method:
-During flat welding, maintain a 45 ° angle between the gun head and the material, and weld from front to back.
-When replacing protective lenses, pay attention to the surrounding environment and use textured paper to protect the outside of the gun head to prevent dust from entering.
2. * * Focusing mirror, reflector, and QBH lens damaged * *:
-Reason: These lenses are the main lenses inside the welding gun, and when damaged, they appear as insufficient power, laser dispersion, and welding nozzle burning red.
-Handling method:
-Immediately stop welding and inspect the lenses.
-Disassemble the welding gun and replace the damaged lenses in a dust-free environment.
3. * * Wire feeder jamming * *:
-Reason: It is usually related to poor rotation of the gun nozzle, wire feeding tube, or wire disc, especially when welding aluminum materials.
-Handling method:
-Check the nozzle, wire feed tube, and thread tray to ensure they rotate smoothly.
-For aluminum material welding, special attention should be paid to cleaning and inspecting these components.
4. * * Splash of slag * *:
-Reason: It may be due to excessive power, uncleaned material surface, or strong gas.
-Handling method:
-Adjust the power appropriately.
-Clean the surface of the material.
-Reduce gas pressure.
5. * * Weld seam too high * *:
-Reason: The wire feeding speed is too fast or the welding speed is too slow.
-Handling method:
-Reduce the wire feeding speed.
-Improve welding speed.
6. * * Welding offset * *:
-Reason: Improper positioning during welding or inconsistent position between wire feeding and laser irradiation.
-Handling method:
-Adjust the laser offset and swing angle.
-Check if there is any deviation in the connection between the wire feeder and the laser head.
7. * * Weld color too dark or weld depression * *:
-Reason: Improper laser power, welding speed too fast or too slow.
-Handling method:
-Adjust the laser power.
-Adjust the welding speed.
8. * * Equipment alarm or no light output * *:
-Reason: It may involve laser, water cooler, pressure alarm, screen issue, or safety lock issue.
-Handling method:
-Perform corresponding checks and adjustments based on the alarm information, such as changing the alarm level, checking wiring, adjusting temperature, etc.
-Check if the safety lock and related preparation signals are normal.
9. * * Red light deviation or laser center deviation * *:
-Reason: Incorrect adjustment of laser center or equipment malfunction.
-Handling method:
-Manually adjust the red light or laser center to ensure accurate alignment.
-Check for any malfunctions in the equipment and repair them.
10. * * Insufficient welding penetration or cracks * *:
-Reason: Insufficient laser energy, incorrect focusing, workpiece cooling too fast, large fit gap or burrs, etc.
-Handling method:
-Improve pulse width and current.
-Adjust the amount of focus.
-Adjust the cooling water temperature or clean the workbench.
When dealing with these common faults, safety should be ensured first, and then targeted troubleshooting and handling should be carried out according to the specific situation. If you encounter problems that cannot be solved on your own, you should promptly contact professional technical support or maintenance personnel.