O/A welding setup?
Thread Starter
|
Hotshot
Joined: Oct 2002
Posts: 18,488
Likes: 22
From: The Big, Oregon
O/A welding setup?
Ok, since my TIG setup is still awaiting parts and I have work to do, I am going to play around with my torch. I need to weld two small holes in a piece of steel tube that's really not in the greatest shape.
Basically, what pressures should I run, and what shade of lens would be best? I have a feeling my #11 I use with TIG might be a bit much, and the pressures I use for cutting are probably a bit too high as well. I do have a welding tip for my torch, I'm not going to try this with a cutting tip-
Basically, what pressures should I run, and what shade of lens would be best? I have a feeling my #11 I use with TIG might be a bit much, and the pressures I use for cutting are probably a bit too high as well. I do have a welding tip for my torch, I'm not going to try this with a cutting tip-
Elder User
Joined: Dec 2003
Posts: 531
Likes: 1
From: New Mexico
A number 5 is the standard for O/A welding. As far as pressures, no more than 7psi on acetylene because it gets unstable at high pressures. And, 7-10 psi (max) on oxy. Cutting is about oxidizing so the pressures on oxygen can go up to about 35psi, but not for welding. High pressures of the gases, especially on thin metals, blows through the weld and it makes a messy and high warpage weld. Its too much heat necessary and wasteful of the gas. This is for 00 and 0 and 1 or 2 sized tips. Larger tips may require more oxygen.
The best metalmen I see work with 7 and 7 or even lower on their pressures. These are the guys that hammerweld and do the best work with a clunky old torch when the rest of us are trying to outdo them with spiffy hi-tech TIG. Go figure.
The best metalmen I see work with 7 and 7 or even lower on their pressures. These are the guys that hammerweld and do the best work with a clunky old torch when the rest of us are trying to outdo them with spiffy hi-tech TIG. Go figure.
Posting Guru
Joined: Jun 2001
Posts: 1,236
Likes: 2
From: Vancouver Island
Thread Starter
|
Hotshot
Joined: Oct 2002
Posts: 18,488
Likes: 22
From: The Big, Oregon
Thanks, that answered all my questions.
I do know the basics, but since I tend to use electrically operated processes, I didn't know some of the "common sense" stuff.
I did have to do a two-week course at Electric Boat before they would even let me handle a torch. It didn't matter that I had been cutting for a while. Really impressed the instructor when I went and dug a channel 3/8" deep in a 1/2" plate with a flushing tip. Or when I cut a lap-welded plate off another without touching the base plate.
I do know the basics, but since I tend to use electrically operated processes, I didn't know some of the "common sense" stuff.
I did have to do a two-week course at Electric Boat before they would even let me handle a torch. It didn't matter that I had been cutting for a while. Really impressed the instructor when I went and dug a channel 3/8" deep in a 1/2" plate with a flushing tip. Or when I cut a lap-welded plate off another without touching the base plate.
Thread
Thread Starter
Forum
Replies
Last Post
tractormanbill
1948 - 1956 F1, F100 & Larger F-Series Trucks
5
Nov 20, 2011 12:18 AM
