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  #11  
Old 03-06-2019, 11:57 AM
crystallographic crystallographic is offline
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Default Heavy metal poisoning

Quote:
Originally Posted by norson View Post
My grandfather was in the plating trade. He started working for Ford in Detroit in 1925 and worked until the early '30s in the plating shops. Traveled to Portland (Grapes of Wrath style) and worked in then bought a plating shop. I was seventeen when I was driving him to the hospital for radiation treatments for his throat cancer. Nasty stuff those chemical fumes.

Norm, Two different topix going here now:

"Plating shops" must also bring up those heavy metals involved in that process:
Cyanide copper (and acid copper)
Nickel
Chromium - and Cr(VI), hexavalent chromium (Erin Brockovitch -- right??)
https://www.osha.gov/Publications/OS...troplating.pdf

(Zinc chromate plating is a completely different type of plating.)

For our discussion here, working with galvanneal /Gal-X-C exposes the worker to a different metal - zinc - than does copper/nickel/chromium electro-plating. The airborne concentrations of zinc is nil from galvanized sheet, unless the metal is heated above 900F. When airborne concentrations go up enough, zinc is no longer a dietary supplement, and that form of zinc oxide is not a sunscreen.

(Volatizing metals with heat happens quietly in cities and towns everywhere: https://www.cnn.com/2019/02/26/healt...ematory-study/
(I've often joked about specifying that my own used-up shell be sent out for refining ... )


I don't think associating these two separate processes really helps the worker doing galvanized, unless it is to suggest wearing gloves when handling galvanized, wearing breathing filters when sanding/grinding it, or wearing more serious breathing protection when heating it above 650F.
(yes, I have also worked in plating shops - and yes I lost three friends who ran their shops with great craftsmanship and huge experience, and they all got throat cancer. BIG loss to those of us doing the high-end work.)
I have also known many professional welders who welded galvanized during their LONG careers. They did get sick and learned from their first bout - and wore appropriate safety apparatus for the following long decades.

Bottom line: Be Safe.
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Last edited by crystallographic; 03-06-2019 at 12:38 PM.
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  #12  
Old 03-06-2019, 01:43 PM
norson norson is offline
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Thanks for the clarification Kent. I'm just sensitive to the workplace/ environmental issue. I worked for a clutch rebuilder in the early '60s and was around asbestos and degreasing chemicals. At that time we didn't know about this stuff. I had a guy paint my car with Imron paint in the '70s and later found out he had problems. The more information we have out there the better. The hobbyist doesn't have the access to the information that the professional has.
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  #13  
Old 03-06-2019, 02:21 PM
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Z5Roadster Z5Roadster is offline
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In the UK we have a zinc coated sht. Zintec I used it to make a Toe Board 1.2mm. Admin gave me SOTM July 2014, thanks admin.
http://allmetalshaping.com/showthread.php?t=7900&page=3 post #27

IMG_5900.JPG

Spec Sheet :- http://amerexsteel.com/wp-content/up...SED-ZINTEC.pdf
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  #14  
Old 03-06-2019, 06:42 PM
Mr fixit Mr fixit is offline
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Hi Gang,

I appreciate the update and the SAFETY concerns. They are not something to mess around with, I try to adhere to them whenever possible, which is all the time if I want to be alive to enjoy the Grandkids.

Kent and Norm, I have to say with this conversation I'm going to go the safer route and just use the regular sheet steel and a real good (as much as I can myself) paint job from start to finish.

TX
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Chris
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