What are the common faults of laser welding machines?
Why is the weld very black when the laser welding machine is welding?
The possible reason for the blackening of the weld seam is that the airflow direction of the shielding gas is incorrect. The airflow direction of the shielding gas should be opposite to the direction of the workpiece. Try to adjust the direction to observe the welding effect.
Why does the laser welding machine crack when welding?
1. The cooling speed of the workpiece is too fast. The rapid temperature difference will cause cracks in the metal. The water temperature should be increased.
2. The gap between the workpieces is too large or there are burrs. The processing accuracy and flatness of the workpiece should be improved.
3. The surface of the workpiece is not clean. In this case, the workpiece needs to be cleaned.
4. The flow rate of the shielding gas is too large, which can be solved by reducing the flow rate of the shielding gas.
why is the laser welding machine not penetrating enough?
1. Lack of laser energy can improve the pulse width and current size.
2. The focus lens is incorrect. The amount of focus should be adjusted to get closer to the focus.
Why does the laser intensity weaken when the laser welding machine is welding?
1. The shutter is not completely repelled, and check the lubrication of the shutter connector so that the connector can be smoothly mechanical.
2. The main optical path laser has deviation.
3. The cooling water is polluted or the cooling water is not replaced for a long time. Replacing the cooling water and cleaning the UV glass tube and xenon lamp can solve this problem.
4. The laser does not output from the center of the copper nozzle under the focusing head. Adjust the 45-degree reflection aperture so that the laser outputs from the center of the nozzle.
5. The focusing lens or laser resonator membrane is damaged or contaminated, and should be replaced or cleaned in time.