Manhart How to quickly identify the cause of a malfunction in a handheld laser welding machine?

When a handheld laser welding machine malfunctions, quickly identifying the cause is crucial for improving production efficiency. The following is a clear step-by-step guide for quickly troubleshooting the cause of malfunctions in handheld laser welding machines:
1、 Understand the fault phenomenon
1. Observe the symptoms of faults, such as cracks, insufficient penetration, weakened flames, and black welds during welding.
2. Collect on-site data: Record the specific parameters, operating methods, environmental temperature, etc. at the time of the malfunction.
2、 Preliminary investigation
1. * * Protection gas issue * *:
-Check if the flow rate of the protective gas is too high, which can be solved by reducing the flow rate.
-Check if the airflow direction of the protective gas is correct and should be opposite to the movement direction of the workpiece.
2. Lens issues:
-Check whether the focusing lens, reflector, and QBH lens are damaged or contaminated. If there are any problems, replace or clean them in a timely manner.
3. * * Wire feeder issue * *:
-Check if the wire feeder is stuck, especially when welding aluminum materials.
4. * * Laser output issue * *:
-Check if the laser is outputted from the center of the copper nozzle under the focusing head. If not, adjust the 45 degree reflection film.
-Check if the resonant cavity diaphragm of the laser is damaged or contaminated, and replace or clean it if necessary.
3、 Conduct in-depth investigation
1. * * Cooling system issues * *:
-Check if the cooling water is contaminated or has not been replaced for a long time. If there is a problem, replace the cooling water and clean the relevant components.
2. * * Shutter and xenon lamp * *:
-Check if the shutter is fully opened, and if necessary, add lubricating oil to the shutter connector.
-Check if the service life of the xenon lamp has expired, and if necessary, clean or replace the xenon lamp with a new one.
3. * * Workpieces and environmental factors * *:
-Check if the workpiece has been cleaned thoroughly. If it has not been cleaned, clean it again.
-Check if the fit gap between the workpieces is too large or there are burrs, and if there are any problems, improve the machining accuracy of the workpiece.
-Check if the cooling speed of the workpiece is too fast, which can be solved by adjusting the cooling water temperature on the fixture.
4. * * Other mechanical and electronic components * *:
-Identify other mechanical and electronic components that may affect welding quality, such as motors, sensors, etc.
4、 Summarize and record
1. Summarize the troubleshooting process, record the fault symptoms, troubleshooting steps, and solutions.
If necessary, include the faults and solutions in the maintenance records of the equipment for future reference.
Through the above steps, the cause of the malfunction of the handheld laser welding machine can be systematically investigated and corresponding solutions can be taken. In practical operation, these steps should be flexibly applied according to specific situations to ensure quick and accurate identification and resolution of problems.