Common problems and solutions for 10+kw high power laser cutter cutting thick plates

03, 2021

by oreelaser

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Laser MAX 15kw

Common problems and solutions for carbon steel cutting and debugging

 

Thickness & cutting effect

Problem

Solution

25mm Bright surface cutting

30mm Bright surface cutting

40mm Frosted surface cutting

The nozzle is hot when cutting

①Increase nozzle size;

②The lens is dirty, clean the lens;

③Reduce the positive focus of cutting.

Rough cutting surface

①Raise the positive focus of cutting;

②Reduce nozzle size;

③Reduce cutting air pressure;

④Increase cutting speed.

Hang slag

①Inappropriate cutting speed;

②Increase cutting air pressure;

③Inappropriate cutting focus.

Inconsistent cutting surface

①The nozzle outlet is not round;

②The laser is not in the center of the nozzle.

 

 

Laser MAX 15kw

Common problems and solutions for stainless steel cutting and debugging

 

Thickness & cutting effect

Problem

Solution

6mmNo hang slag

20mmPoint of slag

Cut surface stratification

①Reduce the cutting speed;

②Increase the cutting air pressure;

③Increase the nozzle size;

④The cutting focus is inappropriate.

Hang slag

①Inappropriate cutting speed;

②Increase the cutting air pressure;

③Reduce the cutting negative focus.

Cutting efficiency is slow

①The lens is dirty;

②Increase the cutting air pressure.

40mm

A small amount of hang slag

 

 

Cut surface stratification

①Reduce frequency

②Raise the positive focus;

③Increase the cutting air pressure.

Yellow cut surface

①Reduce the duty cycle;

②Raise the positive focus;

③Increase the cutting air pressure.

 

 

Cutting stability test method

In order to ensure the stability of equipment during batch processing and the stability of processed product quality, stability tests are required before formal batch processing.

 


Test material:

6-10mm stainless steel

Test curve:

helical curve

Testing time:

5-10min

Auxiliary gas:

Nitrogen

Testing method:

①Adjust the stainless steel cutting parameters to ensure that the cutting surface is free of slag and no delamination;

②Continuously cut for 5-10 minutes at full power to check whether the cutting surface is consistent;

③If there are problems such as gradual increase of dross, blue light after cutting for a period of time, and the sheet cannot be cut, it means that the cutting focus is shifted. It is necessary to check the cutting head lens (the lens is dirty/poor lens quality has thermal lens problem) and the focus position.





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