. Chlorinated compounds used to remove oils from metals may also react under the UV created during arc welding to produce phosgene.
Arc welding produces VERY intense UV radiation. (Intense enough to cause severe "sun" burn very quickly)
The answer is: DO NOT use chlorinated cleaners around ANY arc welding operations EVER!
Most all the "Brake" cleaners that are non-flammable are chlorinated. Some of them are made with naptha (gasoline) but then they have their own warnings..... (BOOM!!)
Cheers,
Rick
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1955 F-600 // D I S C L A I M E R: No animals were injured while test driving my F-600 except the ones I RAN OVER INTENTIONALLY!!! (RESISTANCE IS FUTILE) 73 de Rick
From Wikipedia: Arc welding produces VERY intense UV radiation. (Intense enough to cause severe "sun" burn very quickly)
The answer is: DO NOT use chlorinated cleaners around ANY arc welding operations EVER!
Most all the "Brake" cleaners that are non-flammable are chlorinated. Some of them are made with naptha (gasoline) but then they have their own warnings..... (BOOM!!)
Cheers,
Rick
Looks like all kinds of brake cleaner has some hazards however, so does skipping the cleaner and using shop air to clean brake drums etc. I also read it isn't wise to let the waste from cleaning brake parts (using spray) hit the shop floor as once it dries the asbestos (if using that type pad) can become airborne. Better to use an absorbent pad.
from wikipedia: Arc welding produces very intense uv radiation. (intense enough to cause severe "sun" burn very quickly)
the answer is: Do not use chlorinated cleaners around any arc welding operations ever!
Most all the "brake" cleaners that are non-flammable are chlorinated. Some of them are made with naptha (gasoline) but then they have their own warnings..... (boom!!)
cheers,
rick
I never said Phosgene gas comes from zinc...it is a resultant
from...applying a open flame to galvanized steel...
.... I built a new engine for my Falcon early last spring and used chlorinated brake parts cleaner to clean the block before final assembly. ...
Off on a tangent ... Solvents are no good for cleaning metal in an engine prior to use. They remove the oils but do not float out the particles stuck in pores. Soap and water (a surfactant) is needed. Dawn dish soap and hot water is super for this, but cleans so well you will start to see flash rust almost immediately, so have spray oil ready.
I never said Phosgene gas comes from zinc...it is a resultant
from...applying a open flame to galvanized steel...
Well,
That's my point too.....It's NOT a resultant from applying an open flame to galvanized steel.
That PDF doesn't say that either.
Quote:
It does say the following,
I am just trying to point out that Zinc is not related to Phosgene....NOR does it produce Phosgene.
Chlorinated Hydrocarbons COMMON to *some* over-the-counter automotive cleaners when exposed to the UV produced by electric arc welding, DO produce Phosgene.
That's what happened to the person that wrote that original article..............
.A gas welding or cutting flame or the melted metal puddle might also produce enough UV (I'm not going to test it though) But it's not due to the zinc on the metal.
This is probably a moot point because regardless, we need to ENSURE that we have good ventilation and the movement of air MUST be away from the person doing the welding....as instructed in that excellent article you posted.
__________________
1955 F-600 // D I S C L A I M E R: No animals were injured while test driving my F-600 except the ones I RAN OVER INTENTIONALLY!!! (RESISTANCE IS FUTILE) 73 de Rick
"This is probably a moot point because regardless, we need to ENSURE that we have good ventilation and the movement of air MUST be away from the person doing the welding....as instructed in that excellent article you posted."
That really is the point, and can we add that there are a lot of aerosol products we commonly use that are VERY dangerous in the presence of ANY source or ignition. Welder, garage space heater, water heater, doesn't matter.
Most of us have used spray paint in the presence of flames, and not ventilated quite good enough. If it's a cleaner or an adhesive, I learned the hard way the the potential is there. Are there other high risk products in my garage? Reading the label doesn't mean much. It's all flammable, but what products truly have the high potential of putting you on your knees crawling for the door is what we really need to know.
__________________
'fenders
53 F100
"All Ford" Volare Truck
Who would have even remotely thought that the UV radiation from an regular arc welder could produce mustard gas from what most of would consider a common automotive cleaner?
__________________
1955 F-600 // D I S C L A I M E R: No animals were injured while test driving my F-600 except the ones I RAN OVER INTENTIONALLY!!! (RESISTANCE IS FUTILE) 73 de Rick
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Wrong!...
...he said tinkle...
...at least we are all on the same page...seems we all started out
