Ten common problems and solutions in laser cutting carbon steel plates

11, 2019

by Oree Laser

Laser-cut carbon steel plates are hot-cut. Under normal cutting conditions, the carbon steel cutting effect should be burr-free and the traction lines are consistent, as shown in the following figure.


正常情况.png


However, due to some improper operation debugging, problems may occur and adjustments should be made according to the reasons.


Bottom traction line has a large offset, and bottom incision is wider


1.png


Possible Causes

Solutions 

Feedrate is too high 

Reduce the feed rate

Laser power is too low

Increase laser power

Air pressure is too low 

Increase air pressure

The focus is too high

Reduce the focus


The burr on the bottom surface is similar to slag, which is dripping and easy to remove


2.png


Possible CausesSolutions 

Feed rate is too high

Reduce the feed rate 

Air pressure is too low

Increase air pressure

The focus is too high

Reduce the focus


The metal burrs that are connected together can be removed as a single piece


3.png


Possible CausesSolutions 

The focus is too high

Reduce the focus


Metal burrs on the bottom surface are difficult to remove


4.png


Possible CausesSolutions 

Feed rate is too high

Reduce the feed rate

Air pressure is too low

Increase air pressure

Gas is not pure

Use a purer gas

The focus is too high

Reduce the focus


There are only burrs on one side of the plate cut


5.png


Possible CausesSolutions 

Incorrect nozzle alignment

Centering nozzle

The nozzle mouth is defective

Change nozzle


Material is discharged from above


6.png


Possible CausesSolutions 

The power is too low

Press the pause button immediately to prevent slag from splashing onto the focusing mirror. The increase the power and reduce the feed rate.

Feed rate is too high


The workpiece is not cut through


7.png


Possible CausesSolutions 

Processing gas error (N2)

Press the pause button immediately to prevent slag from splashing onto the focusing mirror. 

Feed rate is too high

Using oxygen as a process gas

The power is too low

Reduce the feed rate and increase the power


Cutting surface is not precise


8.png


Possible CausesSolutions 

Air pressure is too high

Reduce air pressure

The nozzle is damaged

Replace nozzle

Nozzle diameter is too large

Install a suitable nozzl

Bad material

Use a material with a smooth surface


No burrs, the traction line is inclined, and the slit becomes narrower at the bottom


9.png


Possible CausesSolutions 

Feed rate is too high

Reduce the feed rate


The cutting surface is very rough


10.png


Possible CausesSolutions 

The focus is too high

Reduce focus

Air pressure is too high

Reduce air pressure 

Feed rate is too low

Increase feed rat

The material is too hot

Cooling material



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