Replywhat size material are you cutting?Originally Posted by txrpls
How are your consumables?
usually I've found excessive dross is from moving too slow.
WeldingWeb Journeyman
I get a lot of dross when I cut. I have my air adjusted correctly. any suggestions
Master Welder
what size material are you cutting?
How are your consumables?
usually I've found excessive dross is from moving too slow.
Miller 211
Hypertherm PM 45
1961 Lincoln Idealarc 250
HTP 221
True Wisdom only comes from Pain.
Master Welder
Yes lots of dross usually moving to slow.
Lincoln, ESAB, Thermal Dynamics, Victor, Miller, Dewalt, Makita, Kalamzoo. Hand tools, power tools, welding and cutting tools.
WeldingWeb Journeyman
I just changed them out and will see if that makes a difference. I'm cutting 1/4" thick pipe 1.5' in diameter.
WeldingWeb Journeyman
Ok, so I changed out the consumables and that made a difference. I want to cut slow as this is a weird irregular cut. How do you cut slow with this machine?
WeldingWeb Journeyman
Well, I figured it out, just cut slow and knocked of the dross with a chipping hammer.
WeldingWeb Artisan
It’s a combination of cut amps and travel speed. Get the combination correct and you get relatively clean cuts.
Jason
Lincoln Idealarc 250 stick/tig
Thermal Dynamics Cutmaster 52
Miller Bobcat 250
Torchmate CNC table
Thermal Arc Hefty 2
Ironworkers Local 720
Master Welder
One setting. WFO and pull accordingly. See the spray angle ? Too slow is straight down
Last edited by Bonzoo; 12-16-2019 at 09:51 AM.
WeldingWeb Artisan
Dross is caused by: 1. Cutting too slow, 2. Cutting with torch too high off material. If the part is detailed and you need to move slow.....turn the amperage knob down unil you are comfortable (that is what the Amp setting is there for). With experience, just like with welding processes, you will find a sweet spot that works for you. You will find that low speed dross is very easy to knock of with chisel (buy a concrete chisel at the local hardware). Finding the ideal speed by machine cutting is easy, by hand it is hard to find the sweet spot between low speed dross and high speed dross. If the height is right (correct height with shielded hand cutting parts on a Hypertherm is dragging) and the speed is right, and the retaining cap is perpendicular to the material....you will see the sparks (that exit the bottom) actually lead the torch by about 10-15 degrees when using an air plasma on steel (on stainless and aluminum the sparks should trail by 15 to 30 degrees). The manual has some good info on cutting technique.....check it out! Jim Colt
WeldingWeb Journeyman
Thanks, Jim. I finally got it figured out.
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