Tubular aluminum Pontoon boat frame TIG weld repair

[jtybt]

I don't know what product contained what ingredient that was harmful. I was just warned about some things I was using to clean metal. Alcohol was one that was recommended. I also have lacquer thinner and acetone for cleaning. I no longer use carb or brake cleaner as those were what I was warned about.

[SeanMurphy265]

Carb cleaner is fo-sho flamable!!! I wonder if it has something to do with welding near the can, or leaving the can on top of or near what is being welded, and the heat causes the can to explode?

[jtybt]

No, it wasn't about the flamability of the cleaner/solvents. They're pretty much all in that category. It had to do with heating the un-vaporized solvent during welding and creating a DEADLY gas. I looked/searched for a thread or any info in the forum but didn't come up with anything.

[jtybt]

Found this passage in a search about dangerous gases in welding...


SOLVENTS
• Welding through or near some (chlorinated) solvents can produce phosgene, a poisonous
gas. The gas can cause fluid in the lungs. You may not notice the problem until hours after
you quit welding. But fluid in your lungs can kill you

[Tritium]

Link to the brake cleaner thread: http://www.everlastgenerators.com/fo...r-Phosgene-Gas

Thurmond

[jtybt]

YUP!! That's the one!!!!

[ogorir]

interesting that the 'safety solvent' is methlyene chloride (aka the active ingredient in paint stripper). I always thought it was caustic, but I just looked up and there's ammonium hydroxide in pain stripper also which I suspect is what burns when you get it on you.

I wonder if that solvent you have will strip paint? what'd you pay for a can?

[jtybt]

That paint stripper is powerful stuff. I used it to clean the paint off the deck of my boat...and it ate the fiberglass resin right out of the deck. I had fiberglass filaments blowing in the breeze.

[jakeru]

interesting that the 'safety solvent' is methlyene chloride (aka the active ingredient in paint stripper). I always thought it was caustic, but I just looked up and there's ammonium hydroxide in pain stripper also which I suspect is what burns when you get it on you.

I wonder if that solvent you have will strip paint? what'd you pay for a can?

I've noticed it wrinkles the paint (maybe even powdercoat) right off of some painted/finished aluminum wheels if I get some of it that sits on a painted area, even just for a few seconds. And, I'm not talking about ameteur-applied finishes either, I am talking about OEM factory-applied (Mercedes, BMW, etc) wheel finishes, that you think would be really durable! So, at least with some kinds of paints/finishes, it seems to be a surprisingly effective paint remover.

Here is the source: $6.50 / 24 oz can.
https://weldingsupply.securesites.co...EF:OR:386-5140