Safe to weld steel after Ospho? |
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Safe to weld steel after Ospho? |
jasons |
Sep 13 2010, 02:29 PM
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#1
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Jackstand Extraordinaire Group: Members Posts: 2,002 Joined: 19-August 04 From: Scottsdale, AZ Member No.: 2,573 Region Association: None |
Thinking of safety and noxious fumes.... Is it safe to weld steel that was Ospho treated? I'm rebuilding my hell hole/battery tray/engine console and I want to give it a thorough Ospho treatment prior to welding.
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SirAndy |
Sep 13 2010, 03:08 PM
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#2
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Resident German Group: Admin Posts: 41,640 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
Thinking of safety and noxious fumes.... Is it safe to weld steel that was Ospho treated? I'm rebuilding my hell hole/battery tray/engine console and I want to give it a thorough Ospho treatment prior to welding. That's a good question ... (IMG:style_emoticons/default/idea.gif) Andy |
rick 918-S |
Sep 13 2010, 03:16 PM
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#3
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Hey nice rack! -Celette Group: Members Posts: 20,458 Joined: 30-December 02 From: Now in Superior WI Member No.: 43 Region Association: Northstar Region |
I'm sure it's too hot there to work with the door open but use a small fan to move the air away from youand you should be in less danger. Even breathing welding fuses is bad for you. I'm sure the OSPHO will add some additional danger.
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jasons |
Sep 13 2010, 03:23 PM
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#4
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Jackstand Extraordinaire Group: Members Posts: 2,002 Joined: 19-August 04 From: Scottsdale, AZ Member No.: 2,573 Region Association: None |
I'm sure it's too hot there to work with the door open but use a small fan to move the air away from youand you should be in less danger. Even breathing welding fuses is bad for you. I'm sure the OSPHO will add some additional danger. Actually its more comfortable to work in the garage with the door open and a fan on. I get better circulation. But I would be concerned about keeping gas on my welder tip if I had a fan right on me. Maybe I will put a grinder on the steel where I want to drop some beads after the Ospho. I'm pretty sure welding the Ospho is relatively safe. But I hear those stories about people getting sick or worse so I don't want to assume too much. |
Andyrew |
Sep 13 2010, 03:38 PM
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#5
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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 |
They get sick from galvanize after welding it. That stuff is BAD.
Just crank up your gas and put a fan behind your face. We used to do it all the time in the shop welding galvanize. |
Richard Casto |
Sep 13 2010, 03:45 PM
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#6
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Blue Sky Motorsports, LLC Group: Members Posts: 1,465 Joined: 2-August 05 From: Durham, NC Member No.: 4,523 Region Association: South East States |
I'm sure it's too hot there to work with the door open but use a small fan to move the air away from youand you should be in less danger. Even breathing welding fuses is bad for you. I'm sure the OSPHO will add some additional danger. (IMG:style_emoticons/default/agree.gif) My gut is telling me that regular welding fumes is worse than the amount of zinc you might get from welding OSPHO treated metal. Try to have some type of ventilation anytime you weld. |
jasons |
Sep 13 2010, 03:59 PM
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#7
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Jackstand Extraordinaire Group: Members Posts: 2,002 Joined: 19-August 04 From: Scottsdale, AZ Member No.: 2,573 Region Association: None |
I know zinc/galvanized is bad. Since Ospho is just Phosphoric Acid, I doubt Zinc is much of a concern.
I remember someone posting a link to a custom bicycle frame builder that became temporarily paralyzed from some kind of solvent fumes when welding. Anyone else recall that? |
Elliot Cannon |
Sep 13 2010, 06:02 PM
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#8
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914 Guru Group: Retired Members Posts: 8,487 Joined: 29-December 06 From: Paso Robles Ca. (Central coast) Member No.: 7,407 Region Association: None |
Try to rig up something that will blow fresh air into your welding helmet. You breathe fresh air and your weld doesn't.
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al weidman |
Sep 13 2010, 06:40 PM
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#9
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Al Weidman Group: Members Posts: 156 Joined: 22-February 08 From: Oroville, Ca. Member No.: 8,736 Region Association: Northern California |
I saw that also, I recall he was welding after cleaning some metal with brake cleaner. Very bad stuff. (IMG:style_emoticons/default/welder.gif) (IMG:style_emoticons/default/icon8.gif)
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sean_v8_914 |
Sep 13 2010, 07:14 PM
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#10
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Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
I have a cut down snorkel attached to a plastic hose. then I tape a respirator cartrige to the end Apollo13 style. it fits under my helmet.
now about the welding: grind the metal clean in the weld area then treat with 3m or Wurth weld thru primer (zinc rich) any overlapping metal |
Richard Casto |
Sep 13 2010, 07:31 PM
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#11
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Blue Sky Motorsports, LLC Group: Members Posts: 1,465 Joined: 2-August 05 From: Durham, NC Member No.: 4,523 Region Association: South East States |
I know zinc/galvanized is bad. Since Ospho is just Phosphoric Acid, I doubt Zinc is much of a concern. I remember someone posting a link to a custom bicycle frame builder that became temporarily paralyzed from some kind of solvent fumes when welding. Anyone else recall that? People tend to use the trade name "Ospho" as a generic name. But formulations are different. If you look at the MSDS for "Ospho" (brand) you will see that it is just Phosphoric Acid, so it converts the iron oxide into iron phosphate. Another product is the brand name "Metal Ready" (by POR15). In addition to Phosphoric Acid, it also has Zinc Phosphate. Which I believe is what the original poster is asking about. I use the Metal Ready brand and I just make sure I have some type of ventilation when welding. Regarding the solvents and welding... That is when you weld around chlorinated solvents (such as used in brake cleaner). The UV light from the arc converts the chlorinated solvent into phosgene gas (used in WWI as a poison gas in trench warfare) This is why I used non-chlorinated brake cleaner. |
charliew |
Sep 13 2010, 09:22 PM
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#12
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Advanced Member Group: Members Posts: 2,363 Joined: 31-July 07 From: Crawford, TX. Member No.: 7,958 |
Not that I would want to breathe any unnecessary fumes but the only reason I would want to treat it first is too keep flash rust from forming on bare metal if it's going to be awhile before it gets welded and sealed. I've never had any luck making a non porous weld with a fan blowing the gas away. Rusty metal is bad enough as it is.
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