OT: I think I got myself sick welding galvanised, calling any real welders.... |
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OT: I think I got myself sick welding galvanised, calling any real welders.... |
Scott S |
Jul 30 2010, 03:18 PM
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#1
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Small Member Group: Members Posts: 1,697 Joined: 30-April 03 From: Colorado Member No.: 633 |
Built a muffler last night (really pleased with how it came out and sounds). Woke up with a sore throat. By lunch a had just a touch of the shakes. Called the FLAPS where I bought some of the piping and they guy said it was galvanised. When I bought the stuff, I specifically asked about this, as it was hard to tell if the parts were coated (not the usual sheen). The other guy said he thought they were just aluminized and would be fine to weld. Being a beginner - I believed him.
Any idea how this will last? I spent a continuous 2-3 hours last night breathing this crap. I litterally feel like I have a mild flu. (IMG:style_emoticons/default/headbang.gif) |
Andyrew |
Jul 30 2010, 03:33 PM
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#2
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Spooling.... Please wait Group: Members Posts: 13,376 Joined: 20-January 03 From: Riverbank, Ca Member No.: 172 Region Association: Northern California |
It is poison..
I used to weld the stuff all day, but we had 30" fans behind our backs pushing the fumes out the door. You need to get the stuff out of your system and take it easy for a while. Go on a welders forum and see what they have to say about it. Oh if you have to weld again, you can try grinding the galvanized out and it'll help, but in the end, turn up your argon, get a fan to suck the air away and weld through it. |
Bleyseng |
Jul 30 2010, 03:56 PM
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#3
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Aircooled Baby! Group: Members Posts: 13,035 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
yes, bad stuff!!!
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charliew |
Jul 30 2010, 04:27 PM
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#4
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Advanced Member Group: Members Posts: 2,363 Joined: 31-July 07 From: Crawford, TX. Member No.: 7,958 |
Don't play dumb when you do something you're not sure about. You will probably be ok but you better google it. I have welded gal metal but always have ground the galvanizing off to get a cleaner weld and to keep the nozzle from getting all caked up with the gal spatter. I'm sure it will kill you but you might be 100 before it happens. It's nearly impossible to weld with a mig with gas with a fan blowing the gas away, the weld will be porous with the gal contamination and then with the gas shielding gone it will really bubble and spit. The fan sucking might help though.
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pktzygt |
Jul 30 2010, 04:30 PM
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#5
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Member Group: Members Posts: 328 Joined: 20-March 07 From: Chesapeake, VA Member No.: 7,611 Region Association: MidAtlantic Region |
The proper respirator is not "THAT" expensive. I think it is worth it. read about it in the welders forum.
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Andyrew |
Jul 30 2010, 04:34 PM
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#6
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Spooling.... Please wait Group: Members Posts: 13,376 Joined: 20-January 03 From: Riverbank, Ca Member No.: 172 Region Association: Northern California |
Charlie,
Nearly impossible welding is my name! Thats why you have to crank up the argon.. When I used to do it in the shop we had a big fan blow all the air out, it was necessary, but we got good welds out of it with a couple tricks. One of the wierdest tricks that I figured out was that we wouldnt grind down the galvanize OR the primer over the galvanize (commercial door frames), then we would grind a small spot to start our weld and just weld right through the primer and galvanize. It actually allowed (for an unknown reason) for the galvanizing to not affect the weld. Otherwise if we tried to grind to bare metal and weld, we would just lay our bead and then POP and the weld would be gone, and we would have to reweld it MANY times... Not such a good thing for a production shop... |
charliew |
Jul 30 2010, 05:03 PM
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#7
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Advanced Member Group: Members Posts: 2,363 Joined: 31-July 07 From: Crawford, TX. Member No.: 7,958 |
I'm sorry but I never had a good experience trying to weld through galvanize with a mig. I have welded it pretty trouble free on angle that was gal though with a stick welder. I'm sure it was the flux on the rod.
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rick 918-S |
Jul 30 2010, 05:04 PM
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#8
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Hey nice rack! -Celette Group: Members Posts: 20,492 Joined: 30-December 02 From: Now in Superior WI Member No.: 43 Region Association: Northstar Region |
Scott,
Galv is accumulative. It never really leaves your system. The sickness will pass but you will more sensetive to the fumes next time. Take some real asprin for the headache at the back of your skull and eye sockets and drink milk. The milk will help with the throat and the nausia. Becareful out there kids. |
914werke |
Jul 30 2010, 05:52 PM
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#9
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"I got blisters on me fingers" Group: Members Posts: 10,140 Joined: 22-March 03 From: USofA Member No.: 453 Region Association: Pacific Northwest |
Hmmm I was just wondering about this, so is the same concern true with Zinc coated pieces?
Also would brazing get things hot enough to "burn" such coatings? |
davesprinkle |
Jul 30 2010, 07:13 PM
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#10
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Senior Member Group: Members Posts: 720 Joined: 13-October 04 From: Berkeley, CA Member No.: 2,943 Region Association: None |
Hmmm I was just wondering about this, so is the same concern true with Zinc coated pieces? Also would brazing get things hot enough to "burn" such coatings? It's zinc-oxide fumes that cause the symptoms. From what I've read, it's unpleasant but not fatal or long-lasting. Galvanizing is essentially zinc-plating. Slightly different process, but the same metal. Yes, brazing would cause the same issues. |
jea69 |
Jul 31 2010, 03:20 AM
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#11
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doing unspeakable things to iron Group: Members Posts: 51 Joined: 13-March 08 From: norway Member No.: 8,811 Region Association: Scandinavia |
sometimes when i have to weld galvanized parts, and grinding it off is no option, i let it soak in vinegar (strongest you can get) overnight, it will eat off the galv compleatly.
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Gint |
Jul 31 2010, 07:33 AM
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#12
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Mike Ginter Group: Admin Posts: 16,083 Joined: 26-December 02 From: Denver CO. Member No.: 20 Region Association: Rocky Mountains |
Jeez Scott...
I never believe what FLAPS guys tell me. They've been wrong too many times. |
brant |
Jul 31 2010, 07:53 AM
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#13
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914 Wizard Group: Members Posts: 11,639 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
Jeez Scott... I never believe what FLAPS guys tell me. They've been wrong too many times. Sorry about that Scott get well soon. I agree with Mike on this one. those FLAPS guys are mostly just trying to get through their day some are good, but some are terrible. Never trust them unless you know them and have lots of repeat experience with the same guy. Monday my bike broke down on the way to work. Battery was dead. I'm assuming the alternator is out, but I take the battery into checker and its reading 10.8volts. I ask the guy if he can charge it. He puts his tester on and on his machine its 11.2V He says the battery is fine. I tell him that I know its ok under load but needs a charge so I can get home. He insists its just fine as is, and I have another problem I need to fix. Again, I agree I have a charging problem but I also want him to charge the battery and I point out this is a 12volt system so the battery is low. He insists the battery is fine as is. I catch a ride home, charge it for 20 minutes, get another ride back to the bike, and ride home with the battery at 100%loss. Flaps guys can be terrible. |
charliew |
Jul 31 2010, 12:56 PM
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#14
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Advanced Member Group: Members Posts: 2,363 Joined: 31-July 07 From: Crawford, TX. Member No.: 7,958 |
I'm to old to put up with dumb ass people. I would have asked for the manager and said I would pay for the charge if they were to tight to do it for free that the battery needed to be at 12v when I leave or it is no good. 11.2 could be a weak cell or low on acid on that cell.
A lot of galvanized metals are hot dipped and the coating is pretty thick. Most zinc is put on with electrolysis and is not very thick so it is easier to work with. |
sww914 |
Jul 31 2010, 03:59 PM
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#15
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Advanced Member Group: Members Posts: 2,439 Joined: 4-June 06 Member No.: 6,146 Region Association: None |
If I weld 1 spot of galvanized I immediately have an upset stomach, need to go poop, and get a headache, all within seconds. It's poison. Wear a respirator, they're 8 bucks at Walmart.
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tomeric914 |
Jul 31 2010, 08:22 PM
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#16
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One Lap of America in a 914! Group: Members Posts: 1,259 Joined: 25-May 08 From: Syracuse, NY Member No.: 9,101 Region Association: North East States |
... and drink milk. (IMG:style_emoticons/default/agree.gif) You have what is referred to as Metal Fume Fever which has flu like symptoms. Old timers say to drink a pint of milk before and after welding galvanized. Better to have proper ventilation and a respirator. |
jimtab |
Jul 31 2010, 09:22 PM
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#17
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Advanced Member Group: Members Posts: 3,477 Joined: 5-January 03 From: Pacifica, California Member No.: 91 Region Association: Northern California |
If I weld 1 spot of galvanized I immediately have an upset stomach, need to go poop, and get a headache, all within seconds. It's poison. Wear a respirator, they're 8 bucks at Walmart. I don't shop at Wallyworld but 8 bucks sounds VERY cheap for a real respirator with the proper cartridge for welding Zinc.....check it for sure, not all respirators/cartridges are "created equal"....just my .02 |
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