Shop Floor Talk  

Go Back   Shop Floor Talk > Welding and Metalworking Forums > Welding

SFT Search:   
Reply
 
Thread Tools Display Modes
  #1  
Old 01-11-2013, 11:19 PM
milomilo's Avatar
milomilo milomilo is offline
Auction Addict
 
Join Date: May 2010
Location: Wheatland, Wyoming
Posts: 15,309
Default Life of argon bottle

How many hours would a 92 CF argon bottle last at 15 CFH? Is it simply 92 divided by 15, or does the pressure factor in to the equation?
__________________
Chris

Liberty has never come from Government. Liberty has always come from the subjects of it. The history of liberty is a history of limitations of governmental power, not the increase of it.
Woodrow Wilson
Reply With Quote
  #2  
Old 01-11-2013, 11:21 PM
Shade Tree Welder's Avatar
Shade Tree Welder Shade Tree Welder is offline
Grumpy Bastard
 
Join Date: Jun 2004
Location: Kankakee County, IL
Posts: 19,658
Default

Quote:
Originally Posted by milomilo View Post
How many hours would a 92 CF argon bottle last at 15 CFH? Is it simply 92 divided by 15, or does the pressure factor in to the equation?
You got it 92/15 = 6 hours.

The 92CF is measured at STP, or Standard temperature and pressure which IIRC 20C and 1 Atm.
The internal volume of your bottle is only a few cubic feet at best. So the 92 is compressed
many times to fit in the very small space as it is compressed the pressure rises.

PV=nRT better know as the ideal gas law.
__________________
Shade

"Prepare to defend yourselves."
-- Sergeant Major Basil L. Plumley, Ia Drang Valley
Reply With Quote
  #3  
Old 01-11-2013, 11:25 PM
milomilo's Avatar
milomilo milomilo is offline
Auction Addict
 
Join Date: May 2010
Location: Wheatland, Wyoming
Posts: 15,309
Default

Afraid that was it. Think I may go for a 150CF bottle as it will last awhile that way.
__________________
Chris

Liberty has never come from Government. Liberty has always come from the subjects of it. The history of liberty is a history of limitations of governmental power, not the increase of it.
Woodrow Wilson
Reply With Quote
  #4  
Old 01-11-2013, 11:39 PM
Lu47Dan's Avatar
Lu47Dan Lu47Dan is offline
Connoisseur of Old Iron
 
Join Date: Mar 2006
Location: N/W Pa.
Posts: 5,973
Default

Chris, if you can find one get a 330Cu.Ft. bottle. I will be buying two of them in the spring, from a guy that inherited them from his father.
He sold a Miller welder, with Hi-Freq, two tig torches (one water cooled) and the cooler to a guy who did not know he needed the bottles to use them.
I went and looked at the bottles last week and offered him $250 for both. He accepted that offer and I paid a deposit on them. The balance in the spring when we can get down to the shop with a pickup truck. It is too muddy to try until then.
Remember six hours of Tig welding is a long time.
Dan.
__________________
Tools to Men are like Shoes to Women , you can never have too many !!
Used diesel engines are an adventure anyway you look at them !!
Miller XMT-304 Multiprocess
Miller 10-E Wire Feeder
Miller Spectrum 2050 Plasma Cutter
Hobart AC/DC stick welder
Hobart 175 Mig
Craftsman O/A set
Turbo torch and B-tank
Reply With Quote
  #5  
Old 01-11-2013, 11:46 PM
greywynd's Avatar
greywynd greywynd is offline
I can dig it
 
Join Date: Dec 2005
Location: Wainwright, Alberta
Posts: 4,803
Default

Yep. Biggest we can own here in an argon bottle is about 60cuft, I just have 3 of them around, and if I know I have a big job coming up I make sure they are all full. Honestly though, actual trigger time isn't that high, the cutting, fitting, cleaning, etc takes a big chunk of time. Even with 8-10 hour days I would say that a bottle would often last me 3-4 days. Of course that depends what I'm working on as to how much trigger versus setup time there is.
Reply With Quote
  #6  
Old 01-12-2013, 08:10 AM
allessence's Avatar
allessence allessence is offline
Gadget Girl
 
Join Date: Jul 2009
Location: MA, 01543
Posts: 6,472
Default

I have 4 330cuft Argon, 2 300 O2, 2 125 Acetiline, 2 300 Nitrogen. personally owned.

Plus and assortment of smaller 80cuft and a few 125cufts.


The place I get my gas at now is great about just exchanging the cylinders for full one.. for the longest time I would have to do all my own VIP checks and hydros.. I didn't mind so much even with the extra cost since it solved the rental problems I experienced in the past.

In Eastern Mass they are fanatics about not owning your own and make you jump thru hoops to get them filled.. Here in Central Mass not so much.

Now I just go exchange what ever I need and I am good to go.. Nice thing is I can swap out an Argon and get helium if I need to.. I just pay the difference in gas cost..
__________________
_________________
Jennifer

If I defend myself I am attacked.

My meaningless thoughts are showing me a meaningless world.

My attack thoughts are attacking my invulnerability.

I'd like to think of something smart, but I don't want to hurt myself.

My google+ page

DoALL 36"
Another Johnson model J Project
Lathe? Maybe..... 1958 SBL 13"
Yeti Esseti Aka running welder on 3phase.
Reply With Quote
  #7  
Old 01-12-2013, 09:04 AM
H80N's Avatar
H80N H80N is offline
That Man Behind The Curtain
 
Join Date: Dec 2009
Location: NE Pa
Posts: 5,180
Default

About the only thing that I would add into this mix is that with the
greater capacity and longer duration of the larger bottles comes
increased difficulty in handling... The big heavy ones can be a real pain to deal with...

it is a trade off between ease of handling/transport vs capacity/duration..

here is a comparison chart to give you some idea...

http://www.airgas.com/content/detail...=7000000000234
__________________
.
.

Pay no attention to that man behind the curtain..


The more you Know, The Better you Know, How little you Know (old Estonian saying)
Reply With Quote
  #8  
Old 01-12-2013, 05:31 PM
TriHonu's Avatar
TriHonu TriHonu is offline
Senior Member
 
Join Date: May 2007
Location: St Paul, Minnesota, USA
Posts: 434
Default

Another issue is refill cost.

Through my supplier, I only pay a little more to get 250 cf bottles filled compared with the 125 cf bottles. The larger the bottle, the less you pay per cubic foot of gas.

My 250 cf Argon refill cost $62.00.

It appears that the handling charges must make up a significant portion of the cost.
__________________
There is nothing quite as permanent as a good temporary repair.
People are not the solution, because Most People are the problem...
Reply With Quote
  #9  
Old 01-12-2013, 09:38 PM
greywynd's Avatar
greywynd greywynd is offline
I can dig it
 
Join Date: Dec 2005
Location: Wainwright, Alberta
Posts: 4,803
Default

I agree with everything said here. Basically, for personal use, buy the biggest you can afford and handle. I wish I could buy bigger here, but the rules of all the suppliers is that 100cu ft is the maximum they will sell.

Technically it's more like a lifetime rental, it's a swap and go deal, so I've never had to deal with hydro testing or any of that. I can also generally swap out tanks for something else in a similar size, for example I scored a bunch of B tanks of acetylene a few years ago, kept two, and traded the others against Argon and other gases instead.
Reply With Quote
  #10  
Old 01-12-2013, 09:54 PM
milomilo's Avatar
milomilo milomilo is offline
Auction Addict
 
Join Date: May 2010
Location: Wheatland, Wyoming
Posts: 15,309
Default

Quote:
Originally Posted by Lu47Dan View Post
Chris, if you can find one get a 330Cu.Ft. bottle. I will be buying two of them in the spring, from a guy that inherited them from his father.
He sold a Miller welder, with Hi-Freq, two tig torches (one water cooled) and the cooler to a guy who did not know he needed the bottles to use them.
I went and looked at the bottles last week and offered him $250 for both. He accepted that offer and I paid a deposit on them. The balance in the spring when we can get down to the shop with a pickup truck. It is too muddy to try until then.
Remember six hours of Tig welding is a long time.
Dan.
You can always drop one of at my place and I will test out how many months it will last me???
__________________
Chris

Liberty has never come from Government. Liberty has always come from the subjects of it. The history of liberty is a history of limitations of governmental power, not the increase of it.
Woodrow Wilson
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Web Search:

All times are GMT -5. The time now is 06:35 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.