Common problems and solutions of fiber laser welding cleaning cutting machine

Common problems and solutions of fiber laser welding cleaning cutting machine

Fiber laser welding cleaning cutting machine can realize spot welding, butt welding, stitch welding, sealing welding, etc., high aspect ratio, small weld width, small heat affected zone, small deformation, fast welding speed, smooth and beautiful weld, no need after welding Processing or simple processing, high welding seam quality, no pores, precise control, small focusing spot, high positioning accuracy, and easy automation.

So what problems do we often encounter when using it? Without further ado, let’s take a look!

Fault 1. The weld seam is very black when the fiber laser welding cleaning cutting machine welds

1. The nitrogen is not turned on, as long as the nitrogen is turned on, it can be solved.
2. The airflow direction of the shielding gas is wrong, and the airflow direction of the shielding gas should be opposite to the movement direction of the workpiece.

Fault 2. Cracks appear when the fiber laser welding cleaning cutting machine is welded

1. If the cooling speed of the workpiece is too fast, the temperature of the cooling water on the fixture should be adjusted to increase the water temperature.
2. If the matching clearance between the workpieces is too large or there are burrs, the machining accuracy of the workpieces should be improved.
3. The workpiece is not cleaned. In this case, the workpiece needs to be cleaned again.
4. The flow of protective gas is too large, which can be solved by reducing the flow of protective gas.

Fault 3. The penetration depth of the fiber laser welding cleaning cutting machine is not enough

1. The fiber laser energy is not enough, which can be solved by increasing the pulse width and increasing the current.
2. The defocus amount of the focusing lens is wrong, and the defocus amount should be adjusted to the position close to the focus.

Fault 4. The flame of the fiber laser welding cleaning cutting machine is weakened during welding

1. The shutter is not fully opened, check and add lubricating oil to the shutter connection to make the connection mechanically smooth.
2. The main optical path fiber laser shifts, adjusts the main optical path full-reflection and semi-reflection diaphragms, and uses image paper to check and adjust the spot.
3. If the cooling water is polluted or the cooling water has not been replaced for a long time, it can be solved by replacing the cooling water and cleaning the UV filter glass tube and the xenon lamp.
4. The fiber laser is not output from the center of the copper gas nozzle under the focusing head. Adjust the 45-degree reflective diaphragm to make the fiber laser output from the center of the gas nozzle.
5. If the focusing lens or the resonator diaphragm of the fiber laser is damaged or polluted, it should be replaced or cleaned in time.

Common problems in the use of hand-held fiber laser welding cleaning cutting machines and their solutions

In the current welding field, the use of hand-held fiber laser welding cleaning cutting machines has been extremely common. It is very popular with users because of its convenient operation, portability, fast welding speed and high product yield. However, when using a hand-held fiber laser welding cleaning cutting machine, there may be some problems. The following is a summary of the common faults of the fiber laser welding cleaning cutting machine and how to deal with them.

The solubility of fiber laser welding cleaning cutting machine is not enough

It can be solved by increasing the pulse width and increasing the current, or adjusting the defocus amount close to the point position.

Cracks appear when welding with fiber laser welding cleaning cutting machine

It can be solved by reducing the air flow through the flow rate of the protector, or reducing the temperature of the cooling water and increasing the water temperature. If the workbench is not cleaned, you can re-clean the workbench.

If the weld seam is deep when the fiber laser welding cleaning cutting machine welds

Then it is necessary to use nitrogen or other inert gas in time, or adjust the airflow direction of the protector, which is opposite to the movement direction of the workpiece.

If the fiber laser beam is weakened when the fiber laser welding cleaning cutting machine is welding

It can be solved by changing the cooling water. If the main optical path fiber laser is deviated, it is necessary to adjust the main optical path total return or semi-reflection film.

If there is an open flame that does not fully bounce

Then you need to check whether there is any remaining oil on the shutter connection.

The above are the common faults and processing methods of fiber laser welding cleaning cutting machines, I hope to help you.