[Jewelry making - Article 00305] - [Orchid] Chemical Uses

[Nileshhk]

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Hello everybody,

    I am a hobbyist, dabbling in (precious) metallurgy.  I am trying to
    figure out somethings and would appreciate any assistance. I have 
    come accross a lot of chemicals which are and can be used as fluxes
    for melting  and assaying metals. I would really appreciate if some
    learned soul could guide  me as to the properties, uses and
    characteristics (metallurgy-wise) of these  individual chemicals. 

    A few of these which come to my mind are Boric  acid, Borax, Sodium
    carbonate, ammonium chloride, Sodium chloride, Potassium  carbonate,
    Silica, Mercuric chloride, Copper sulphate, Barium nitrate etc. 

    In fact what I am trying to achieve is to formulate  a flux
    composition for melting and making brass & Nickel silver 
    compositions, which would provide a good melt cover (to prevent zinc
    loss),  with de-oxidising properties. 

    My good wishes for the oncoming  season. 
 
    Regards,
    Nilesh Gupta

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