[SchalerMfg]

Hi guys,

Looking for someone to help me out on some cutting issues on or Durma Fiber Laser. Having lots of issues with nitrogen cutting for a start. I am using 15 bar for 14 gauge material with a 2 mm nozzle and still some burrs on the oposite side. I have been talking with diffrent laser opperators and they told me I shoudn't need over 10 bar pressure for that material. Feedrate 300ipm. Focus -0.07". Precitec Laser Head with 7.5 inch focal length also tried the 5 focal length in machine. IPG resonator 2kw. Nozzle gap at 0.012.

[AsKane]

Hi,
If you are using nitrogen or air for cutting carbon steel this pressure is not high and it is barely sufficient for a 2kw machine. To decrease the burrs you need to adjust the cutting spead and focus and do trial and error but generally lower spead and foccus help. Regarding the nozzle, maybe try a 1.2 mm double layer composite instead.