[Jewelry making - Article 00607] - Re: [Orchid] Striker verses lighter when lighting a torch.

[SERVE4GWM]

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    Hydrogen Heat Limit 

    Hydrogen Heat Limit: This is an interesting subject which our firm
    works with daily, world wide.  The answer is effected by many
    things.  The highest temperature a two part hydrogen one part oxygen
    flame produces is 3,300 degrees C or 5972 degrees F. 
    Hydrogen/oxygen generators then run this gas through different sorts
    of booster tanks or systems.  The booster fluid can be a number of
    different chemicals which alter the flame profile and change the
    actual temperature.  As an example, most platinum and gold work is
    done using Methanol as the booster fluid producing a temperature of
    2,700 degrees C or 4,892 degrees F and produces a precise blue flame
    with only axial heat (heat in front not on the sides). If you were
    doing large silver work, such as a tea service and wanted a cooler
    softer "bushier" you could use Acetone which would provide a much
    wider flame similar in configuration to natural gas, but cleaner and
    safer.  This flame would be considerably cooler at 1,500 degrees C
    or 2,732 degrees F.  There is an extensive number of booster fluid
    options which produce an excellent range of temperatures.  

    The other part of this equation is gas volume and control.  There
    are different types of "water welders," single cell and multicell. 
    A single cell unit is limited (by physics) in the amount of gas
    which it can produce, and control.  You could not do hollowware
    (small teapot) raising (anneal) a sheet, soldering the handle,
    spout, feet with a single cell generator.  With a multicell
    generator not only very small precise work can be done, but
    hollowware manufacturing is not too difficult, and we have a number
    of customers doing exactly this, for many years.  In those
    hollowware applications some of it "plated ware," such as decorative
    rims onto trays, then the feet to tray, the soldering is even
    automated.  (shameless plug coming) Our firm Spirig, manufacturers a
    (fully patented) multicell generator, the Spirflame=AE, with a good
    number of customers in the metalsmithing and jewelry industry, world
    wide.  Please feel free to contact me directly if we can offer any
    additional information in this area.  Sincerely, Gary Miller 

    Gary W. Miller Sr. Technical Advisor Spirig Advanced Technologies
    Technical Division 35 Bronson Road Stratford, CT 06614-3654 U. S. A.
    Telephone: 800 499 9933/203 378 5216  Fax: 203 386 1346 E-mail:
    gwmiller.sat AT spirig.net or serve4gwm AT aol.com  Web site:
    www.spirig.com 




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