Fine web cutting

[louiss4618]

Hi There,
I have been working with a Amada Pulsar Laser that has 4000 watts, normally we just run everything as fast as possible. We cut various thicknesses of Stainless steel from .030 to .125 on a normal day. My problem now is that our design department wants to get into cutting real smal holes on small parts, ex part size 1.5" x 3.5" with about 60 small holes in the part, almost looks like a cheese grator. I know it can be done but I am having trouble figuring out how to reduce the amount of splatter from the peirce, and the burning of the material that is inbetween each hole.
Was wondering if any one can point me in he right direction? I know I will have to use a cut condition with really low setting and still be able to cut thru .048 SS.
Thanks in advance,

Louis

 

[Foostrap]

For the piercing, make sure you gas pressure is not too high; otherwise you can get extra splatter (but not too low or you could spot up the lens). Use max power, max DC and max Freq for the piercing. Focal point is important to get a nice quick and clean pierce.
For the cutting, to get a consistent cut, you may indeed have to lower the speed (to minimize the impact of machine acceleration). Lower the power until the burr goes away (too much power will give you a burr). Don't be afraid to keep on lowering it. If you do lower it too much, you will lose the cut.