[TheForge] Vision damage and welding shields pt 2

Mon Jan 13 10:27:59 2003

Hey Phlip,
Sorry about misspelling your name.
In your research you might want to check out the  CRC Handbook of Chemistry
and Physics.
My old copy describes the Flame test to detect Sodium compounds. The yellow
flare is characteristic of all Sodium compounds.  When subsequently viewed
thru a blue lens the flame then becomes colorless.
Chuck

----- Original Message -----
From: "Phlip" <[email protected]>
To: <[email protected]>
Sent: Sunday, January 12, 2003 11:25 PM
Subject: Re: [TheForge] Vision damage and welding shields pt 2

>
> Ene bichizh ogsen baina shuu...
>
> > Hey Bob,
> > I guess you and Philip must have mastered the fluxless forge weld.
> > Congratulations!
> >  The majority of us average Bladesmith / Blacksmiths tend to use large
> > amounts of borax flux.
> > You might want to look up the chemical formula for Borax.
>
> Well, since you gave such a pissy answer to my mild joke, AND misspelled
my
> name, I'm in the process of doing some research, to discover exactly what
> does happen when borax melts onto a weld. So far, I have discovered that
> sodium flare is considered a hazard in the glass industry because the
silica
> sand used for glass is usually sea sand, thus has free salt (NaCl) as an
> impurity in it, while borax, the mineral, is composed of  Na 2 B 4 O 5 (
OH
> 4), meaning that the sodium is already bonded to the oxygen, thus not
> forming a new chemical bond, as is the case with the  silicates containing
> sodium chloride.
>
> > I find didymium /gold coated face shields extremely helpful in spotting
> weld
> > imperfections in my damascus welds.
>
> That's a reason it itself to use them, if that's the case, but that does
not
> necessarily follow from the question of whether or not mineral borax emits
> light in the spectrum referred to as "sodium flare".
>
> Phlip
>
>  If it walks like a duck, and quacks like a duck, it is probably not a
> cat.
>
> Never a horse that cain't be rode,
> And never a rider who cain't be throwed....
>
>
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