bmxdad
Well-known member
What is a pressurized air tank used for on a plasma table?
Show us your welding projects
- Thread starter neonnblack
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Grinder Bill
Well-known member
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- Jan 11, 2011
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- 217
Pugs; do some math... Calculate the total surface area of the tank in square inches and multiply by 5 pounds per square inch. This is the amount of energy stored in your pressurized tank...
Yes and there are rods welded from top to bottom to keep the tank square as well.
I finished my Rotisserie Today
I finished building my rotisserie today. I can now work on the bottom on my car without having to lie on my back. I'm installing a Heidts Pro-G front and rear suspension in my 1967 Mustang Fastback project. I was really dreading having to weld while lying on my back. Now I can either sit or stand.
I still need to balance it so I can rotate it without assistance.
This is by far the largest and most complicated fabrication project I've undertaken.
Britt
I finished building my rotisserie today. I can now work on the bottom on my car without having to lie on my back. I'm installing a Heidts Pro-G front and rear suspension in my 1967 Mustang Fastback project. I was really dreading having to weld while lying on my back. Now I can either sit or stand.
I still need to balance it so I can rotate it without assistance.
This is by far the largest and most complicated fabrication project I've undertaken.
Britt
RivennHewn
Well-known member
Nice job, nice car, nice shop.
You need to start some more threads.
You need to start some more threads.
Steelhorse27
Well-known member
Re: I finished my Rotisserie Today
Build pics/ thread of the rotisserie.... And the mustang please
I finished building my rotisserie today. I can now work on the bottom on my car without having to lie on my back. I'm installing a Heidts Pro-G front and rear suspension in my 1967 Mustang Fastback project. I was really dreading having to weld while lying on my back. Now I can either sit or stand.
I still need to balance it so I can rotate it without assistance.
This is by far the largest and most complicated fabrication project I've undertaken.
Britt
Build pics/ thread of the rotisserie.... And the mustang please
Duker
Well-known member
Re: I finished my Rotisserie Today
Ditto.... That shop is so clean and white it looks like a hospital.....!
Ditto.... That shop is so clean and white it looks like a hospital.....!
APEowner
Well-known member
And the shop please.
saceone
Well-known member
brittf just comes in here and drops a major bomb like it's nothing.
BUILD THREAD!!!!
BUILD THREAD!!!!
ishiboo
Well-known member
Yeah, there's even foliage. And offices!
Many pics needed.
Many pics needed.
steel 35
Well-known member
RivennHewn
Well-known member
I'm fine, tank is fine and doesn't leak. I don't get why almost every time I post stuff here someone is on the "omg you're gonna kill yourself and start ww3" soapbox. I know what I'm doing and take safety precautions and test things to safety factors.
Careful kid, you'll put your eye out!
E.rodz
Well-known member
her is a DIY. frame kit that i am designing for my 1970 chevelle project that i am working on now to make room for bigger tires and a hidden trailer hitch.
Grinder Bill
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- Joined
- Jan 11, 2011
- Messages
- 217
I'm a big fan of natural selection. Carry on.
bmxdad
Well-known member
So it's a reservoir? You pump out of it, to the top tank. And when done let it drain back into it?
longlivepunk
Well-known member
pugs, don't stop posting stuff. 5psi will leak. Not explode. Your project is awesome, can't wait to see more!
RivennHewn
Well-known member
^^This
wyo george
Well-known member
her is a DIY. frame kit that i am designing for my 1970 chevelle project that i am working on now to make room for bigger tires and a hidden trailer hitch.
Nice project.
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pepi
Well-known member
Darn those rails look a bit light for the job.
Grinder Bill
Well-known member
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- Jan 11, 2011
- Messages
- 217
yo, punk. Why is he pressure testing an open vessel in the first place? Makes you wonder about his thought process, or lack of...
As I mentioned in my first post to pugs: do the math. As math is obviously not his strong suit, or yours, let me provide some guidance. His pressure vessel has over 30 tons of stored energy when pressurized to 5psi. Can you say IED?
No; not likely to be an issue, but I never said it is, was or will be. Just do the math and be aware of the potential energy. But no. Both pugs and punk prefer to ignore Grade 10 physics and build bombs.
Do I care? Not one iota; build one yourself. Hell build one for your kids, too.
Darwinism at its finest.
As I mentioned in my first post to pugs: do the math. As math is obviously not his strong suit, or yours, let me provide some guidance. His pressure vessel has over 30 tons of stored energy when pressurized to 5psi. Can you say IED?
No; not likely to be an issue, but I never said it is, was or will be. Just do the math and be aware of the potential energy. But no. Both pugs and punk prefer to ignore Grade 10 physics and build bombs.
Do I care? Not one iota; build one yourself. Hell build one for your kids, too.
Darwinism at its finest.
Ummm, maybe you should do the math....
65" x 57" =3705 sq in x 5psi = 9.26 tons, not over 30 tons. Then take into account the 1/2" rods welded to the bottom of the tank and through the top and welded = tank hardly bulges at all at 5 psi, 11 ga material if it makes a diff.
The 80 gal tank on a typical air compressor has more like 20tons pushing the ends off, even more blowing the sides out (but its a circle so very strong) and you don't even give that a second thought do you. Probably use PVC for airlines to don't you.
And yes technically it is an open vessel, but it is filled with air pressure to push the water up and out, head pressure = 1.2 psi plus add in the resistance of flow of the water when the air is introduced and the tank could see 2-3 psi (with a regulated supply of 5psi max) so to test it to 5 psi to 1. check for leaks and fix them, and 2. ensure no welds crack open at the max pressure allowed.
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Damn dude, ive hooked up plastic soda bottles to air lines to watch and hear them blow.... I do know that 90 psi wont blow a plastic soda bottle up!
Nice attitude, dude. If he was pressure testing at 100psi I would agree with you, but this is a guy who clearly knows a thing or two about fabrication, is doing this in his own house, taking his own risks, and it's 5psi.
"Grinder" Bill,
Practice, practice, practice! And there's not a darn thing wrong with taking lessons at the local high school!
Daveo that's a great idea for storage, I like it.
steel 35
Well-known member
(tank is fine and doesn't leak.) Nice
Hope I didn't offend you I have made Pontoons for boats (Lots) heat exchangers and every one I have pressure tested (always) boings. I am really interested in your project and here is how mine looks. There is a weld somewhere just not the first version bladder. I am using a proven used system and not brave enough to adventure as you. Keep at it and keep posting .
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rancherbill
Well-known member
Grinder Bill is correct.
He is talking about Compressed Air ENERGY Storage not simple force from pressure.
Air is compressible. As a result it has more energy than the force that it exerts on the vessel walls.
To safely test a pressure vessel you use a non-compressible media like water. He is 100% correct about building a bomb. He's done the numbers as to the size of the bomb.
He is talking about Compressed Air ENERGY Storage not simple force from pressure.
Air is compressible. As a result it has more energy than the force that it exerts on the vessel walls.
To safely test a pressure vessel you use a non-compressible media like water. He is 100% correct about building a bomb. He's done the numbers as to the size of the bomb.
I disagree. Force and energy are different entities (basic physics). To know the energy stored in a tank of fixed volume for this problem would be the volume times the change in pressure = VdP
Nothing like this has been calculated here.
Just guessing from the picture of the tank size, it probably has about the same energy as an under-inflated car tire.
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nonhog
Well-known member
Pressure vessels while interesting and a good discussion to have. Maybe it should be on its own. Start a new thread for that subject?
Mod is it possible to start a thread with that subject to clean this one up?
If I'm off base, I apologize.
Mod is it possible to start a thread with that subject to clean this one up?
If I'm off base, I apologize.
zmotorsports
ALLIANCE MEMBER
her is a DIY. frame kit that i am designing for my 1970 chevelle project that i am working on now to make room for bigger tires and a hidden trailer hitch.
Nice. Are you going to TIG this together? I would love to see some final pictures with close ups of the welds if you don't mind.
Mike.
First go at tig welding aluminium today, how did I do?
Merb
Not bad, these are your best ones. I'd suggest dabbing faster so you fill in those craters. Heat looks slightly hot but more fill would have helped aswell.
I like to run a foot pedal, turn the amps higher on the machine than I need and slowly keep adding heat and dipping filler until you form a puddle. Then rock and roll from there.
I missed that it was the same, sorry merbie. Less heat and more fill.
Just my 2cents.
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56rpm
Well-known member
In addition to good lighting, get the corrective lenses for your helmet from your welding supply shop. It is much easier to see the weld with the correction in the helmet than glasses on your head.
MagnumForce
Well-known member
A good helmet makes a huge difference in seeing.