SS cutwith Oxigen
SS cutwith Oxigen
(OP)
is it possible to make a clean cut on 24 gage SS using oxygen?
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RE: SS cutwith Oxigen
RE: SS cutwith Oxigen
RE: SS cutwith Oxigen
RE: SS cutwith Oxigen
Dan - Owner

http://www.Hi-TecDesigns.com
RE: SS cutwith Oxigen
RE: SS cutwith Oxigen
RE: SS cutwith Oxigen
Chad
RE: SS cutwith Oxigen
RE: SS cutwith Oxigen
RE: SS cutwith Oxigen
RE: SS cutwith Oxigen
RE: SS cutwith Oxigen
With paper up, try to lower your gas pressure as much as possible and use the smallest nozzle possible. This will limit the plastic coming off if you don't have the pre-burn option.
RE: SS cutwith Oxigen
No way to cut paper/plastic up gas stream goes under the plastic lifts it and clogs the nozzle.
RE: SS cutwith Oxigen
RE: SS cutwith Oxigen
If you're having problems with vinyl bubbling up try reducing the gas pressure or lowering the power. Lower gas pressure makes it so that the gas only removes the plastic that is vaporized and bubbles can't form simply because there isn't enough pressure. Reducing power burns less vinyl and gives less area for gas to flow in between the material and the plastic.
For example on the trumpf 1030 i cut laser guard using 150 watts, 10,000hz, 750 in/m and only 1 bar of shop air with a 1.7mm nozzle. i haven't had a problem with the plastic bubbling and clogging the nozzle or that horrible shrieking noise since.
24 gage stainless is very thin, if you cut it with nitrogen try using more gas pressure say 10-11 kg/cm and a smaller nozzle, a 1.2 or 1.4. With oxygen i'd use A LOT less gas and a small nozzle, 0.4-0.6 kg/cm and a 1.0 mm. I cut 0.25 in hot rolled steel with 0.8 bar and a 1.0 mm nozzle.
I think your plastic burning issues are from the oxygen assist though.
Hope this helps
RE: SS cutwith Oxigen
You will not get as clean an edge, and may get some oxide adhesion to the back edge of the cut.
But, the plastic or paper on the front may stay better.
Jay Maechtlen
http://www.laserpubs.com/techcomm
RE: SS cutwith Oxigen
I tried low pressure O2 ~1 kg/cm still no good.
And now I have a bigger problem constant -Z over travel alarm at random times. I'm using HS98 head with metal sensing. I know it suppose to work from 20GA and up but I'm getting alarm when cutting 18 GA. Ran HS98 calibration, no effect. Raise nozzle gap no effect. Raise focus no effect. What can I do?