converter dry ice to co2

[smithdoor]

I have seen any converter dry ice to co2
Dry Ice cost only cost from Wal-Mart and Kroger sells small retail amounts for $1.30 per pound.
Back early 1960's I a converter for CO2.

Does any use dry ice for welding?

Dave

[vwguy3]

Huh?
Your posts never make sense....do you type with your toes?

[smithdoor]

I forget to prof read and using a phone with small keyboard and big fingers.

Basically no one talk about using dry ice for welding.
They try using a very small bottle used for paint guns.

I do see anyone taking about using balloon gas for welding aluminum

Dave

Huh?
Your posts never make sense....do you type with your toes?

[duaneb55]

I could be wrong but I believe balloon gas (helium) is a lower grade (less pure) than that required for quality welding.

[shovelon]

I could be wrong but I believe balloon gas (helium) is a lower grade (less pure) than that required for quality welding.

Yes, 25% air. Not only for cost reduction but safety from asphyxiation.

[smithdoor]

Sounds like retailer industry

Dave

Yes, 25% air. Not only for cost reduction but safety from asphyxiation.

[Welder Dave]

Welding grade gas has to be the most pure. Balloons don't care.

[albrightree]

Just refilled my 20lb CO2 tank on saturday. Wondering if CO2 and or Dry Ice , or maybe Liquid Nitrogen might get scarce if needed for transporting vaccines . My cost for 20lb of CO2 was $25.00(Last month I only paid $20.00) and is easily transferred to other containers, only 2 local places have dry ice, and one of them is my welding gas supplier. I've seen several videos of people refilling soda stream, and keg carbonators with Dry Ice. Seems like an awful to of work, but I guess if you really need too.

I was trying out my CO2 for welding last week, and noticed on bigger jobs my flow would go down after about 20 minutes of welding. Regulator is marked for AR/CO2, it has a dial gauge not a flow meter. Maybe my setting is too high,don't know. Went back to AR/CO2 gauge flow seemed fine.
Ran out of .030" 70-s6 wire recently, and while getting CO2 I grabbed a 10lb roll of blue demon for $20.95. Seemed like a pretty good price

Never understood why the helium balloon thing became so popular, especially the Metallized Mylar bag. Its almost the same thing a (electrolytic) capacitor is made out of, then filled with inert(mostly) gas. What do you suppose happens when it lands/gets stuck on a high voltage line ?

[vwguy3]

Using dry ice as a welding shielding gas would be kind of tough. You would have to capture the CO2 as the dry ice sublimates and then figure out how to get it to the weld.
If anything is added to balloon helium it would be nitrogen simply to save on helium. Industrial grade and balloon helium will work for welding when the use is not stated and the customer is given balloon helium.

[smithdoor]

I think it waste to make helium balloons.
But if run out CO2 over a weekend and your work not spec dry ice may work.

I use E71T-11 for welding that does not use gas.

I seen on internet where some use a 2.11cf [60liter] of helium or other gases at very high cost for just few minutes of welding.

Dave

Just refilled my 20lb CO2 tank on saturday. Wondering if CO2 and or Dry Ice , or maybe Liquid Nitrogen might get scarce if needed for transporting vaccines . My cost for 20lb of CO2 was $25.00(Last month I only paid $20.00) and is easily transferred to other containers, only 2 local places have dry ice, and one of them is my welding gas supplier. I've seen several videos of people refilling soda stream, and keg carbonators with Dry Ice. Seems like an awful to of work, but I guess if you really need too.

I was trying out my CO2 for welding last week, and noticed on bigger jobs my flow would go down after about 20 minutes of welding. Regulator is marked for AR/CO2, it has a dial gauge not a flow meter. Maybe my setting is too high,don't know. Went back to AR/CO2 gauge flow seemed fine.
Ran out of .030" 70-s6 wire recently, and while getting CO2 I grabbed a 10lb roll of blue demon for $20.95. Seemed like a pretty good price

Never understood why the helium balloon thing became so popular, especially the Metallized Mylar bag. Its almost the same thing a (electrolytic) capacitor is made out of, then filled with inert(mostly) gas. What do you suppose happens when it lands/gets stuck on a high voltage line ?

[smithdoor]

See
http://www.maxxiline.com
https://www.thewelderswarehouse.com/...-cylinder.html

[danielplace]

Using dry ice as a welding shielding gas would be kind of tough. You would have to capture the CO2 as the dry ice sublimates and then figure out how to get it to the weld.
If anything is added to balloon helium it would be nitrogen simply to save on helium. Industrial grade and balloon helium will work for welding when the use is not stated and the customer is given balloon helium.

Helium, nitrogen and oxygen are common balloon mix but the Helium is still at least 92% of the mix.

Many places sell the same helium regardless of it's end use.

[Welder Dave]

Ran into big problems here when helium wasn't pure enough for welding. Generally if you're using helium for Tig welding you're working on something more critical. Argon has to very pure too.

[vwguy3]

DC TIG on aluminum?
Balloon helium worked fine.
Semiconductor industry? Not so much.

[Welder Dave]

Just refilled my 20lb CO2 tank on saturday. Wondering if CO2 and or Dry Ice , or maybe Liquid Nitrogen might get scarce if needed for transporting vaccines . My cost for 20lb of CO2 was $25.00(Last month I only paid $20.00) and is easily transferred to other containers, only 2 local places have dry ice, and one of them is my welding gas supplier. I've seen several videos of people refilling soda stream, and keg carbonators with Dry Ice. Seems like an awful to of work, but I guess if you really need too.

I was trying out my CO2 for welding last week, and noticed on bigger jobs my flow would go down after about 20 minutes of welding. Regulator is marked for AR/CO2, it has a dial gauge not a flow meter. Maybe my setting is too high,don't know. Went back to AR/CO2 gauge flow seemed fine.
Ran out of .030" 70-s6 wire recently, and while getting CO2 I grabbed a 10lb roll of blue demon for $20.95. Seemed like a pretty good price

Never understood why the helium balloon thing became so popular, especially the Metallized Mylar bag. Its almost the same thing a (electrolytic) capacitor is made out of, then filled with inert(mostly) gas. What do you suppose happens when it lands/gets stuck on a high voltage line ?

Regulator could have been starting to freeze. For Tig the shielding gas has to be extremely clean.

Helium took a huge jump in price several years ago because the restrictions on the main storage facility were lessened and it was depleted. It was in short supply with the priority on medical equipment. Liquid helium is used to cool MRI machines.