[Jewelry making - Article 01304] - Re: [Orchid] Galvanized kitchen countertops

[Bruce Holmgrain]

========[ Invite a Friend - http://www.ganoksin.com/invite.htm  ]========

    See http://www.nationmaster.com/encyclopedia/Galvanization 

    In particular, note "Nowadays it typically means hot-dip galvanizing"

    http://www.nationmaster.com/encyclopedia/Hot_dip-galvanizing

    a chemical process that is used to coat steel 

    http://www.nationmaster.com/encyclopedia/Steel or iron
    http://www.nationmaster.com/encyclopedia/Iron with zinc
    http://www.nationmaster.com/encyclopedia/Zinc 

    As far as zinc being "poisonous", it might be noted that all of us
    using commercially prepared gold alloys inhale a certain amount of
    vaporized zinc already. I make my own 14K yellow alloys with 6.6%
    zinc. When old golds are repeatedly melted, it is the zinc that
    becomes depleted and forces the metal to begin to turn pink. Besides
    improving the color, the zinc  helps to reduce oxidation of the
    copper in these alloys.  My concerns are much more centered around
    the use of cadmium in solders. Cadmium is a carcenogen. 

    From http://www.nationmaster.com/encyclopedia/Zinc 

    Zinc is an essential element in human beings, necessary for
    sustaining life. Deficiencies of zinc have marked effects on weight
    gain in animals. Zinc is found in insulin
    http://www.nationmaster.com/encyclopedia/Insulin , zinc finger
    http://www.nationmaster.com/encyclopedia/Zinc-finger  proteins, and
    such enzymes as superoxide dismutase
    http://www.nationmaster.com/encyclopedia/Superoxide-dismutase . 

    An over supply of zinc has been noted to result in "zinc shakes",
    but removal of the subject from the source will result in recovery. 

    Hard soldering or welding of galvanized iron will result in the
    vaporization of the zinc. This means that the zinc plating can no
    longer do the job of protecting the iron. 

Bruce D. Holmgrain
Goldwerx
http://www.goldwerx.com
guy AT goldwerx.com
JA Certified Master Benchjeweler, CAD/CAM Services

____________________________________________________________________
T h e   O r c h i d   L i s t
Open Electronic Forum for Jewelry Manufacturing Methods and Procedures
____________________________________________________________________
Orchid FAQ:
~ http://www.ganoksin.com/orchid/faq.htm
Orchid Archives:
~ http://www.ganoksin.com/orchid/archive
Orchid Galleries:
~ http://www.ganoksin.com/orchid/gallery.htm
Invite a Friend:
~ http://www.ganoksin.com/invite.htm
____________________________________________________________________
Tips From The Jeweler's Bench - Article Archive
~ http://www.ganoksin.com/borisat/tip_sear.htm
The Jeweler's Selected Bibliography List
~ http://www.ganoksin.com/jewelry-books
Buy Orchid Jewelry:
~ http://www.ganoksin.com/shop
____________________________________________________________________
-Unsubscribe:
-Email: orchid-request AT ganoksin.com Body=unsubscribe subject=blank
____________________________________________________________________