How to debug the parameters of fiber laser cutting machine?

The parameters that affect the cutting quality of fiber laser cutting machine are: cutting height, cutting nozzle type, focus position, cutting power, cutting frequency, cutting duty cycle, cutting air pressure and cutting speed. Hardware conditions include: protective lens, gas purity, plate quality, focusing lens and collimating lens.

When the cutting quality of fiber laser cutting is poor, it is recommended to conduct a general inspection first. The main content and sequence of general inspections are:

1. Cutting height (it is recommended that the actual cutting height is between 0.8~1.2mm). If the actual cutting height is not accurate, calibration is required.

2. Check whether the type and size of the cutting opening is used incorrectly. If correct, check whether the cut is damaged and whether the roundness is normal.

3. It is recommended to use a cutting opening with a diameter of 1.0 for optical center detection. The focus of the optical center detection should be between -1 and 1. This makes the light spot small and easy to observe.

4. Protective lenses: Check whether the protective lenses are clean, water-free, oil-free, and slag-free. Sometimes the protective glasses fog up due to reasons such as the weather or the air being too cold during paving.

5. Focus Check whether the focus setting is correct. If the cutting head focuses automatically, be sure to use the mobile APP to check whether the focus is correct.

6. Modify the cutting parameters.

After the above five checks are correct, modify the parameters according to the cutting phenomenon of the fiber laser cutting machine.

How to adjust parameters according to this phenomenon, here is a brief introduction to the conditions and solutions encountered when cutting stainless steel and carbon steel.

For example, there are many types of stainless steel slag. If there is only slag hanging on the corners, the roundness of the corners can be considered, and the parameters can reduce the focus, increase the air pressure, etc.

If there is slag all over, it is necessary to lower the focus, increase the air pressure, and increase the cutting opening. However, if the focus is too low or the air pressure is too low, it will cause cross-section delamination and surface roughness. If there is granular soft slag hanging all over, the cutting speed can be increased appropriately or the cutting power can be reduced.

Fiber laser cutting machines may also encounter when cutting stainless steel: When cutting slag hanging on the proximal side, you can check whether the air supply is insufficient and the gas flow cannot keep up.

Fiber laser cutting machines generally encounter problems when cutting carbon steel: the cross-section of thin plates is not bright enough, and the cross-section of thick plates is rough.

Generally speaking, the brightness of carbon steel cut by 1000W laser does not exceed 4mm, 2000W is 6mm, and 3000W is 8mm.

The part you want to cut brightly must first have a good plate surface with no rust, oxidized paint, and no skin, followed by high oxygen purity of at least 99.5%. Things to note when cutting are: Use a small cutting nozzle Double layer 1.0 or 1.2, the cutting speed needs to be faster than 2m/min, and the cutting air pressure should not be too high.

If you want the fiber laser cutting machine to cut thick plates with good quality, first ensure the purity of the plate and gas, followed by the selection of the cutting port. The larger the aperture, the better the section quality, but at the same time, the section taper will be larger.