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WIRE and PLATE TECHNICAL INFORMATION
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To
anneal or soften any of our wires or plates simply follow
the below procedures. In a pre-heated oven place the metal.
Heat karat gold to 1200°F-1400°F depending on
color and karat. Let the metal heat for approximately
15 minutes. The material should become a dullish red prior
to removal. Air cool for one minute, and then quench in
a pickle solution. To prevent oxidation you should coat
the material in a boric acid-alcohol solution flux prior
to heat treatment. Check our charts section for our recommended
annealing temperatures for all karat, silver and platinum.
For your convenience,
you may already purchase any of our wires & plates
in the tempers listed. Most are available in soft, hard
and extra hard spring (Pin-Ton). When purchasing our hard
metal products, softening can still be accomplished by
following the above procedures.
You may also anneal our materials on your bench with a
torch. Simply Flux, torch gently until a dull red, then
quench in a pickle solution. |
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If
you require hard, spring hard or heat-treatable materials,
be aware
that we stock them regularly. These materials can be
annealed just like our other products.
To age harden gold or silver follow the below instructions.
Set your oven for 600°F. When the temperature has
reached the above, place materials in and leave to heat
for approximately 45 minutes. Do not pickle quench until
the materials have been allowed to completely air cool.
With experience you will be able to adjust the hardening
procedure. The amount of heating time, temperature used
and air cooling time will ultimately determine how hard
your materials will become.
To
harden materials to their very maximum; A) prior to the
above suggestions you can first anneal your metal, bringing
it to a dead soft condition B) then age harden as instructed. |
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A) Do not heat above 50% of
materials liquidus temperature when age hardening.
Over heating and subsequent quenching will create warping
and cracking known
as "Thermal Shock".
B) Try to always coat your materials with a good boric
acid-alcohol (flux) solutions prior
to any heat treatment. By not properly doing so oxidation
and tarnishing will occur.
C) In the event that oxidation occurs anyway, ( and that
possibility exists even if you coat)
depending on the metal, you can either attempt to buff
or dip into a solution of potasium
cyanide (400gr cyanide to one gallon of water.)
D) After heat treatment, to remove the flux residue, you
can emerse the materials in a diluted
sulfuric acid solution of one pint of acid to one gallon
of water. |
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| Ross Metals believes that
the above data is accurate and reliable. However, they
are only recommendations given to you free of charge,
and should be employed by you with discretion and risk.
Ross Metals assumes no responsibility for difficulties
or damages incurred by adhering to this information. |
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