On Tue, 2 May 2017 19:03:31 +0100, "Ian Field"
wrote:



wrote in message
.. .
On Mon, 1 May 2017 21:25:07 +0100, "Ian Field"
wrote:



wrote in message
...
On Mon, 01 May 2017 15:08:31 +0700, John B Slocomb
wrote:

SNIPPED


The usually suggested preparation for welding or brazing galvanized
materials is to grind all the galvanizing off!

ACTUALLY, stripping the zinc with acid is much more effective.
Hydrochloric acid makes short work of zinc and produces zinc chloride,
which can be used as soldering flux - - -

Certainly better than the ****wit who suggested grinding it off and
breathing it as dust instead of fumes.

The steel would probably contaminate it, but it'd have some uses.

Zinc really isn't that toxic - its used in baby powder, hundreds of skin
lotions and winter defence vitamin supplements.

And no one is making all that much commotion about all the scrap zinc
batteries that ended up in landfill. The bogeyman most people think of is
mercury.

That rots out the central nervous system.
And elemental mercury isn't the serious problem it'd made out to be
either - it's the organic compounds (which CAN form in disposal - if
the mercury combines with carbonaceous materials)

I thought it was something like a salt or sulphurous compound - but its a
long time since I read up on it.

And you're being awfully pedantic about the distinction between elements
and their organic compounds for someone with no grasp of etymology.
I have a good grasp of etymology. However, I also have a very good
knowlege of technical terminology and processes - which you obviously
do not - and the etymological derivation of a term is not always the
comonly used or technically correct definition.

Word Origin and History for gal-va-nize Expand

v.

1802, from French galvaniser, from galvanisme (see galvanism ).
Figurative sense of "excite, stimulate (as if by electricity)" first
recorded 1853. Meaning "to coat with metal by means of galvanic
electricity" (especially to plate iron with tin, but now typically to
plate it with zinc) is from 1839.

Also, Galvanic sprouts from the experiments of an Italian by the name
of Luigi Galvani who discovered the electrochemical reacion between 2
dis-similar metals - copper and, you guessed it - ZINC - and Galvanic
as a term has been associated primarily with Zinc ever since..

History of galvanizing. “In 1836, Sorel in France took out the first
of numerous patents for a process of coating steel by dipping it in
molten zinc after first cleaning it. He provided the process with its
name 'galvanizing'."

From WikiPedia:
History and etymology - Galvanization (or galvanizing as it is most
commonly called in that industry) is the process of applying a
protective zinc coating to steel or iron, to prevent rusting. The most
common method is hot-dip galvanizing, in which parts are submerged in
a bath of molten zinc.

The earliest known example of galvanized iron was encountered by
Europeans on 17th-century Indian armor in the Royal Armouries Museum
collection.[1] It was named in English via French from the name of
Italian scientist Luigi Galvani. Originally in the 19th century, the
term "galvanizing" was used to describe the administration of electric
shocks; this was also called Faradism. This usage is the origin of the
metaphorical use of the verb "galvanize", such as to "galvanize into
action" meaning stimulating a complacent person or group to take
action.

In modern usage, the term "galvanizing" has largely come to be
associated with zinc coatings, to the exclusion of other metals.
Galvanic paint, a precursor to hot-dip galvanizing, was patented by
Stanislas Sorel, of Paris, in December 1837