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I have read about the effects of phosgene gas when folks have welded on parts that have been sprayed with brake cleaner. I am a novice MIG welder that works on old cars. My question is, can you safely weld sheet metal that has been sprayed with brake cleaner? I don't mean immediately, but after the cleaner has dried?I have some floor pans that need to be welded. I inadvertently sprayed some brake cleaner on them while I was cleaning a nearby part. It has been a couple days now. With brake cleaner, is it NEVER safe to weld over, or is it only unsafe to weld over when it's still wet? I typically use Acetone a prep before welding. FYI, I use the "WearEver brake parts cleaner, non-chlorinated" if that helps. Thank you for the help, much appreciated.Last edited by hoodooman; 12-18-2018 at 10:24 AM.
Reply:If it's non chlorinated then it's safe at any time. Chlorine is what creates the gas.
Reply:
Originally Posted by henry42
If it's non chlorinated then it's safe at any time. Chlorine is what creates the gas.
Reply:Clean it again with some acetone or paint thinners and let that flash off if your concerned. Cant be too clean anyways. Typically the brake cleaner thats non flammable and smells good is chloriinated and bad news. It doesnt work nearly as well either
Reply:Thanks guys. I haven't been out in the garage in a couple days. I just went out and I was WRONG, what I have is not the non-chlorinated stuff. It says non-flammable, which i guess means it has those harmful chemicals. So am I safe to weld on this since it's been several days since I got some brake cleaner on those floor pans? I will be wire brushing and cleaning with Acetone before attempting to weld, unless it's just unsafe to continue since I was wrong about the brake cleaner I have.
Reply:No the non-chlorinated is safe and does not contain the chlorinated solvents that can create the phosgene.IMPEACH BIDEN!NRA LIFE MEMBERUNITWELD 175 AMP 3 IN1 DCMIDSTATES 300 AMP AC MACHINEGOD HELP AMERICA!Freedom is never more than one generation away from extinction.We didnt pass it to our children in the bloodstream".RONALD REAGAN
Reply:Still be careful and make sure the part is completely dry before welding. Use an air gun to blow out any holes, cracks, orifices, etc.12v battery, jumper cables, and a 6013.I only have a facebook page. https://www.facebook.com/pages/VPT/244788508917829
Reply:
Originally Posted by CAVEMANN
No the non-chlorinated is safe and does not contain the chlorinated solvents that can create the phosgene.
Reply:
Originally Posted by danielplace
It was not non-chlorinated he used. It WAS chlorinated. His last post.
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Originally Posted by VPT
I didn't see that, hopefully he isn't int he hospital or worse now.
Reply:
Originally Posted by hoodooman
I ask this question again to any who may be knowledgeable - if brake cleaner spray gets on metal, is it potentially NEVER safe to weld on, or, after it evaporates for several days is it safe?
Reply:
Originally Posted by MinnesotaDave
From the CDC:My interpretation of this reading is that once liquid and vapor have dissipated, the risk has ended as well.When parts cleaned by someone else show up, I re-clean with acetone or paint thinner and hit them with the blow gun to dry.I don't even buy brake cleaner actually, I use paint thinner in a spray bottle for brake rotor cleaning.
Reply:I haven't seen "chlorinated" brake cleaner in ages. Had no idea it was still being soldT man.15 + years working for myself, and by golly, I still don't know what I want to do when I grow up.
Reply:
Originally Posted by MinnesotaDave
+1 ^^^ what he said.
Reply:The toxic avenger must not be to toxic anymore, still readily available here, just remember reading don't use clorinated on aluminum brake parts, so I just used to buy unleaded, and about 30 years ago I remember getting a snootful of brake clean welding on some tubing and it was a lasting impression that was never repeated, just acetone after that, usually I'm a slow learner (stubborn) but that made me a believer
Reply:
Originally Posted by T man
I haven't seen "chlorinated" brake cleaner in ages. Had no idea it was still being sold
Reply:
Originally Posted by Willie B
I buy chlorinated by the case. Use it for final assembly of machinery parts that ought to be utterly free of grit. Our supplier ships chlorinated unless I specify non chlorinated.
Reply:
Originally Posted by MinnesotaDave
From the CDC:My interpretation of this reading is that once liquid and vapor have dissipated, the risk has ended as well.When parts cleaned by someone else show up, I re-clean with acetone or paint thinner and hit them with the blow gun to dry.I don't even buy brake cleaner actually, I use paint thinner in a spray bottle for brake rotor cleaning. |
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发表于 2021-9-1 23:18:11