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RE: Welding galvanized steel

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Thanks to all who replied to my question, especially Mr. Sprague.  I'll
bring this matter to the attention of my customer and suggest they consider
a specification change to address welding galvanized steel.

Al Greene, PE

> -----Original Message-----
> From:	Swingle, Mark [SMTP:Mark.Swingle(--nospam--at)dcp.state.ma.us]
> Sent:	Monday, September 18, 2000 6:25 AM
> To:	seaint (E-mail)
> Subject:	Re: Welding galvanized steel
> 
> Thanks, Harold Sprague, for your response. What would this list do without
> you!!??  I had wondered about this for some time and had never heard a
> confident answer (I assume you are correct.... ;-).  I am constantly
> fascinated with your contributions.
> 
> Mark
> 
> -----------------------
> 
> He wrote:....
> 
> >RE: Welding galvanized steel....
> 
> >It is done all the time...
> 
> >The zinc has a much lower melting temperature....melt and pool
> or....vaporize....toxic....will not mix into the weld....should be within
> acceptable limits...more intercrystalline cracking in fillet welds.
> 
> >....the welder should oscillate....with a whipping motion....
> 
> >....remove the zinc for structural welds....but for seal welds I would
> not
> worry about it.
> 
> >The zinc coating is self healing....The corrosion resistance is more of a
> cathodic protection as opposed to a
> barrier coating.
> 
> Regards,
> Harold Sprague
> 
> 
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