oxy acetylene psi? cutting and welding

[NJBLZ]

I read rustyparts post.

looking for advice, what psi do you set your regulators at for cutting, I was told apporox 30 psi on the oxygen and 8 psi on the acetylene.


also what psi for welding? I think I was told 4 psi on both.


thanks

 

[sponsoredbydad]

I can only tell you what I was taught. cutting oxy-20-30 depending on thickness acetyelene 3 -5
welding same on the acetyelene and 10 to 20 depending on the tip size and thickness of metal.
some one on this site will be able to give you a professional answer.

 

[sled_dog]

I go more around 25 on oxy and 5-8 on acetylene.

Flame setting is the most important thing in cutting. Of course psis come into play.

 

[tx_sub]

I have a quick reference book for oxy-fuel cutting/welding/heating. It gives general guidelines for PSI for different thickness metals and tip sizes. The aforementioned pressures sound about right. If you ask nicely, I can dig through the garage and pull out the book and give you those numbers. It is worth getting this book. Its yellow and from Victor. Shouldn't be more than a few dollars.

 

[thezentree]

I usually run the oxygen about 40psi and the acetylene about 5-6psi.

 

[sled_dog]

I usually run the oxygen about 40psi and the acetylene about 5-6psi.

something wrong with your torch? I never have to run anything near that much oxy unless there is something wrong.


On another note, how do you guys setup a torch(flame that is)? I used to just guess, now I know what to look for and I cut SO much better now. See if I can come up with an example to show it.

 

[thezentree]

That's just the way I was taught to set it up. It's worked for me, so I never thought to do it differently.

Setup:

Acetylene on, ignite, open acetylene until there's just barely a hint of smoke, open oxygen until there's a blue flame about 3 inches long, hold down cutting lever and tune oxygen until you get the six tiny flames at the tip of the torch and a jet of oxygen (I forget what it's called) about 4-6" long.

 

[NJBLZ]

tx sub, thats ok i'll look for that book, i think welding shop where i got the setup sels victor stuff.

as for flame setup, for cutting i'm ok, sombody shoed me what it should look like.

i need to figure out the welding flame/tip now.

 

[OrangeCrushK10]

if you're welding only use 12-15 oxy psi and cutting at 25-30psi.

acetlyne always at 5-8 psi welding or cutting.


The welding flame - open acytl, light, open acytl until there's little smoke. Slowly open oxy until you have a blue flame with a bright blue center cone and no light blue/white cone.

 

[readymix]

NEVER set your ACY regulator above 15PSI


NEVER, NEVER, NEVER, NEVER, NEVER, NEVER, NEVER, NEVER, NEVER, NEVER

 

[OrangeCrushK10]

NEVER set your ACY regulator above 15PSI


NEVER, NEVER, NEVER, NEVER, NEVER, NEVER, NEVER, NEVER, NEVER, NEVER

ditto. It'll go boom.

Also, never oil your regulators.

It'll go boom.

 

[bowtiepower00]

Yeah it's good to avoid a "boom". I was taught 40/7, but for thinner automotive jobs, etc., less is OK. You'll get the feel of it. Most of my torch work is with 3/8" and thicker stuff, thinner stuff gets the plasma, unless I'm in the field.