I'm probably going to get a 14lb bottle, but if it only lasts 20 mins then I might get something bigger. Glyn Member. Takes me a year to empty one! Easy lasts over 15 kg of wire! If you can get through one in 20 min, i'd be checking your flow rate! Co2 lasts ages mate. Last edited: Jul 15, I've never used MIg before so had no idea at all. When I used them, I was on first name terms with the delivery bloke.
CO2 is liquid, about x times as dense as a gas at 1 bar. Have gone through 3 bottles of argon 1 80cf, 2 cf. The CO2 tank still feels just as full. Some o fthe argon was used for TIG though. CO2 is hard to read capacity left.
It will read the same pressure until it is near empty. Again, all too clever for me Shenion. If gas comes out of my torch, it's full. When it stops, it's empty! Caveman calculations always work for me. NTwoO More skill with grinder than welder.
Does this work if you have mates coming over on a saturday afternoon to work on a big project? Pull the trigger, gas flows. I suppose this is true for anything that changes state when compressed. Furry Freak Member. From my so far very limited experience I too was worried about how long a bottle would last and how I would know it was empty, before it ran out.
If you get me. You see these tanks used in portable oxy-acetylene gas welding kits. While larger cylinders over cf are available, very few are customer-owned, instead, most are leased or rented from the gas supplier. Of course, the larger the tank, the more economical the refills.
I thought all the cylinders for sale online were empty. Later, I learned that I could have a full 80cf cylinder delivered to my door at a great price. These bottles meet DOT standards and are hydro-tested.
The company guarantees the tank will have a minimum of eight years left on the hydro-test. I recommend looking for a small, helpful gas supplier like the one in this video. He shows what cylinder sizes are popular with hobbyists, along with what to look for when buying gas cylinders. For greater penetration and lower-operating costs, some prefer to use pure carbon dioxide instead of a MIG mixture.
The setting is usually between 10 and 40 cubic feet per hour cfh depending on the work environment. Of course, these are calculated times and your real-life results will vary.
As the gas level decreases, the cylinder pressure drops, causing the flow rate to change on single-stage regulators. After a few hours, I figured out why my neighbor was having a problem.
How long should a tank of argon last for TIG welding? The average industrial supply tank of argon gas, at around cubic feet, will last about 10 hours at a 20 — 25 cubic feet per hour flow rate. Most household tanks are between 60 and 80 cf, and at a 20 cfh flow rate will last around 3 to 4 hours. However, the lifespan of your argon tank during TIG welding may vary as it depends mainly on your bottle size, the flow rate, as well as pre and post-flow losses.
Read on to find out what you can do to extend the duration of use on your argon tank. In welding terms, flow refers to the amount of gas being released at any given moment. Flow also indicates the consistency of the stream of gas released. To calculate your flow rate or how long your argon tank should last, you need to consider the size of your tank or bottle and how much gas is being released during the welding process.
Argon tank sizes are measured in cubic feet cf , and the flow of gas is measured in cf per hour cfh. So a simple formula is formed showing how long a particular size tank will last.
Most industrial-sized tanks are around cf in size as they are relatively easy to handle, and given the large size, they are more effective. Large TIG welding power supplies have adjustable features so you can control the flow rate and other features to maximize your argon use. If you are looking for something less heavy-duty, a 60 cf tank is your best bet for the home, but it is not going to last proportionally as long as a larger industrial tank. However, neither the formula nor the table above is entirely accurate in terms of how long your argon tank will last.
Now before you consider the average flow rate during your TIG weld , which is measured in cubic feet per minute or hour cfm or cfh , you should keep in mind that there is a period of gas flow before and after you start to weld. These intervals are referred to as pre and post-flow, and they often account for a noticeable amount of argon gas release.
Most TIG welding power supplies include these features. This is something you need to take into account when calculating how long your argon tank should last. During pre-flow, the feature gives you the ability to shield the weld area before you start welding.
Once stopped, the post-flow feature keeps the gas flowing for some time until the welded area can properly cool down. If you are using a smaller tank, around 60 cubic feet, these features are going to eat up your expensive argon gas very quickly. Remember when we were talking about the consistency of the stream of gas? Well, the stream is essentially the build-up of pressure inside the argon tank, which allows for the gas to be released and flow.
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