Bodor 3Kw Fiber Laser cutting 3/16" Aluminium

[TrickLazer]

I am fairly new to laser cutting and feel I have done fairly well adapting to a new machine. Previously ran 2.5 and 5 axis cnc mills.

However, I have a potential customer that is adament about dross-free aluminium.

3/16" Aluminium
1mm Single tip
1 in/s cut speed
300-350 psi N2
-0.188" focus

I get very consistant, minimal, dross but would like to try and get it down to nothing.

Any feedback would be appreciated.

 

[drossfree]

only way i cut alluminum dross free is if it has plastic film on the bottom side. i know it seems strange anything with plastic on bottom has a large burr but not alluminum

 

[TrickLazer]

Thats what I've found too. Been cutting some 0.04" and 0.05" sheets that have plastic and they turn out pretty good. Just the occasional section where there was a tooth under the cut or if the edge flexes away from the gas preassure.

 

[TrickLazer]

Hey drossfree. do you have any experience settingu piercing on aluminium? my parameters work but arent very nice and my laser "stalls" sometimes on the mound at the pierce.

 

[drossfree]

if your having trouble piercing aluminum try using shop air or oxygen to pierce low pressure of course

 

[Jan Nedela]

Hello guys, we've been experimenting today and found out that big role has the pressure of N2. Best results with 20 Bars.