Plasma Cutter Air Setup EASY
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- Опубликовано: 10 сен 2024
- Plasma Cutter Air Setup .cut 50 plasma air requirements or cut 40 plasma air requirements what plasma cutter air supply do you need for your plasma cutter. I get asked this question almost everyday but it depends on what sort of plasma cutting machine you have? Also how deep do you need to cut in my video i cut up to 1/2 inch steel with 3 different air pressure settings 30 psi , 60 psi , 90 psi find the best air pressure needed for plasma cutting machine in your home workshop.
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The required air supply actually counts for a larger part of the cutting process than the amperes. Most important is continuously having the correct volume of air for every cut you're going to make. Most hobbyists only have a small compressor in their workshop in the backyard shed. Plasma cutting consumes a huge volume of air. Even though a small compressor can deliver app.6 bar(90psi) of pressure, the tank on most of them is too small to supply enough air for the entire cut; i.e. the pressure and thereby the volume of air drops down before the cut has been completed. This will damage your consumables! The solution could be adding a "buffer" tank between a small compressor and the plasma cutter. Pete has made a video covering this subject. However, it may not be a noteworthy problem for the vast majority of hobby users, as cutting thin plate doesn't require so much air; no one cuts railroad tracks in the backyard, lol. You see, all plasma cutters are furnished with buttons for adjustment of amperage and air pressure. Unfortunately, most beginners turn their machine up to full amperage and cautiously set a low air pressure. That's the worst you can do! It spoils your consumables immediately, with certainty. When cutting thin sheet, turn down your amperage. You aim for a cut around 1mm(0.04") in width. Too high amperage creates so much heat that the metal around the cut itself starts melting, thus the air stream from the nozzle can't blow the glowing droplets away fast enough. Result: A damaged nozzle tip, and perhaps even a cracked ceramic insulator on your torch. In the other hand, too high pressure blows the plasma arc so fast away from the metal that it almost prevents the flame from cutting into the metal. Result: A cut only partly through the metal. There is a rule of thumb (US-origin) for amperage / pressure settings: Material from 0.40mm(1/64") to 4.8(3/16) = 20amp/2bar(30psi), 5.0(13/64) to 7.5(19/64) = 30amp/2.75bar(40psi), 8.0(5/16) to 9.5(3/8) = 40amp/3.0bar(45psi), 10.0(25/64) to 12.3(31/64) = 50amp/3.5bar(50psi), 12.7(1/2) to 15.9(5/8) = 50amp/3.75(55psi), 16.3(41/64) to 19.0(3/4) = 60amp/4bar(60psi), 19.5(49/64) to 22.0(7/8) = 60amp/4.5bar(65psi). Be aware it is general recommendations! The various brands/models of plasma cutters might require different settings. It's my experience that both my 3 phase (400volt) 80 ampere industrial machine and my 240 volt (lightweight) 50 ampere portable machine perform best with slightly higher air pressure. Several other factors does have influence on the required settings. You must adjust the settings for each workpass in accordance with: The degree of wear on your consumables, the material to be cut, and the size of the hole in the nozzle you're using. Pete absolutely loves the PT31 torch and rightfully claim the consumables are dirt cheap, but you'll be stuck with only one size nozzle. My 80 ampere machine came with consumables made of pure copper. After a couple of hours cutting thick steel all were gone. Discovering that they were of proprietary size and carried a hefty price, I changed the torch to the only quality chinese generic torch: The P80. (I also ordered my 50 amp machine with factory fitted P80 torch). Yes Pete, P80 consumables are a bit more expensive at US$0.35/pc free delivered, but they last virtually ten times longer. Nozzles and electrodes are heavy nickel plated, and nozzles are available in 6 different hole sizes. This is interesting for hobbyists who's only gonna cut thin plate. A 1.8mm P80 nozzle requires much less air pressure; a small compressor can handle that. On the contrary, I've used the 1.1mm P80 nozzle (Pete's favorite) on my 80 amp machine to cut 40mm steel. It only worked at a pressure of 10bar(145psi)! Not recommended; it puts a lot of stress on hoses. Most manufacturers state a max pressure of 6bar(90psi). Notice: The smaller the hole in the nozzle, the higher air pressure is required. Even more important: The higher the amperage, the higher air pressure is definitely needed! For cutting thin plate a large hole nozzle can be used with less air pressure. Measure your nozzles with a digital caliper on a routine basis and sort them out. Use the slightly worn ones with larger holes (if the holes are still round!) for thin plate only; it may save you money on consumables. One thing to consider about air: All around the world the air contains more or less humidity. The water separator that you mount on the rear of the machine is almost a joke. It can separate out water drops, but does not remove humidity from the air going to your torch. Even the slightest trace of humidity will contribute to the destruction of your consumables, and also slowly but steady disrupt the function of the magnetic air vent in your machine. Good luck finding spare parts for your generic chinese machine when the magnetic vent is stuck due to rust; the only alternative is a costly repair in your home country. Even more serious is the fact that compressors induce microscopic droplets of oil in the air stream, as well as sucking in dust particles from the room, which also ends up in the air stream. Any tiny amount of carbonaceous content in the air will eat your consumables from the inside and out. I have a chinese manufactured air filter system installed on the hose from the compressor; originally purchased for 100% clean air when filling my PCP airguns. It's rated for a max pressure of 300bar. It consists of one cylinder with an ultra fine filter and active carbon for dust collection, and a second cylinder with moisture absorbing silica gel. In case you're using your plasma cutter on a regular basis, you'll save lots of money if you buy such a device (or make one yourself). Although the filter is perfect for providing 100% clean air, unfortunately, it cannot cope with a large volume of air flowing through. A huge homemade "buffer" tank has been welded together from a 4m long stainless steel tube to store air at a pressure of 12bar. A reduction vent on the outlet reduces the air pressure to 10bar in the hose going to the plasma cutter. Bye bye angle grinder, welcome plasma cutter. Happy cutting to you all.
Thanks for you comment Like you say AIR is most important and most people don't relies how much of an affect it has on your cutting power. I still love my pt-31 torch .
Thanks for watching pete
Show your support for my channel by treating me to a coffee! www.buymeacoffee.com/petestools
Pete I love your Videos ,I'm learning more about Plasma cutter from you in a couple hours then if I took a course ,thanks Pete .
Cool, thanks
I love it when you use the torch as a hammer..😄 thanks great help.
Nobody's perfect
Oh man so glad I found your channel
Welcome aboard!
where I work and in my own little shop, i go with max air. the plaz heats the metal and the air blows the molten metal away. i also go as fast as I can. gooday mate
Hi Bob cheers for that
Love your videos Pete! Brilliantly explained!
Oh thanks mate
Thank you for making these videos
My pleasure!
Great video...was wondering why I was getting a lot of slag and incomplete cuts.. I might have been trying half that pressure...time to bump it up a little
Glad I could help!
@@petestools My 50AMPS inbuilt TIG/MMA plasma isn't starting when I go above 30PSI. Or is it me who's unable to start it? SG55 is the worst torch ever!
9.),
hi me again you need an air dryer When water condenses and passes over the trillium an exothermic reaction takes place that will destroy your consumables
cant afford one
Air flow, CFM is as important as pressure. If you have plenty of flow, it won’t be too bad at low pressure, but higher is better. But thicker metal requires a lot of both.
great thanks
Thanks 👍😊
Thank you too
I have a machine 40A, but when try to cut more than 35psi not work. Do you know why?
check the HF (high frequency) spark gap
@@petestools Thank you!
Hi Pete,,So roughly 40amps = 80psi.
30amps 60 psi.
So, Nearly doubling psi to Amps.??.
just play with your air settings until it cuts how you want it to.
Hi pete. may I ask you is it possible to run my PLasma cut 50p from a petrol generator and if it is what would be the best size or spec generator to use without breaking the bank. Cheers peter
Hi mate never tried it but i know a lot of welders don't like it.
hi me again you need 0.4 mpa up to 0.5 mpa
.
Pete can I change electrode every cut???
Why do you need to do that ?
90 psi was the best.
sure was
thanks pete
can i keep it on 90psi even for thin sheet like 40 thou or even 1/6 ?
Never used one before but I was wondering if these plasma air cutter needs to be connected to gas or can it just be air compression? thanks in advance
just use normal air from your compressor
@@petestools thanks heaps mate
Nice job Pete. How many amps did you use?
40 amp plasma cutter
pete's tools
Did you set the 40 amp plasma cutter to max amps as you varied the air pressure?
Can you switch the elec .over once one end has been use
cheers pete
Mine spits and farts then finally fires up for a brief period is that caused by water in the air
yea have you got an air dryer ?
@@petestools only the little one that came with it, sits on the back
And leaks
Top stuff mam
thanks for watching
Hello
please i have a 50A plasma cutter but i don't know the compressor which can go with
Hi this video might help you out .ruclips.net/video/E63Z66N1i9Y/видео.html
cheers pete
So you don't need gas to run a plasma cutter just a compressor ? Well shit I don't have a damn compressor
@@captainzombie13 ROFL!
My BTC500DP unit ( forget the brand) calls for a max of 65 psi I believe. Is that a hard maximum or are they just being cautious about their air connections inside the machine.? I know you have this unit as well as the 7th generation. Have you ever exceeded the factory recommendations?
Yea all the time i tend to cut thick stuff so have really high air pressure
What amperage were you using?
40 amp plasma cutter /15 amp compressor
hi
hi
what happen to u mustache pete lol
LOL set myself on fire