 #792
Alloy
Thank you for using UNITED'S alloys.
UNITED'S 792 ALLOY is designed for 18K yellow gold casting, which
produces a deep yellow color.
You should obtain excellent results by following a few simple
instructions.
MELTING
| Melt Temperature for 18K Alloyed Grain |
1000°C |
1832°F |
| Melt Temperature for Alloying |
1050°- 1070°C |
1922°- 1958°F |
We do recommend pre-graining all alloy and fine gold before
casting to assure a uniform mixture.
FLASK TEMPERATURE
We recommend a slightly higher flask temperature for 18K.
FLUXING
Boric Acid is the recommended flux. Use as little flux as possible.
Do not use carbon fluxes or any fluxes designed for refining; i.e.
soda ash, saltpeter, etc. Avoid flux in bottom pour automatic
casting units.
QUENCH TIME
15 - 20 minutes
INVESTMENT REMOVAL
Most standard investment removers will successfully remove the
investment powder. Fluoric-based investment removers are the best
for removing the silicon oxide invisible coating. UNITED'S Brite-Cast
Investment Remover also works very well.
REMELTING
We recommend 50% rejuvenation for remelting.
NOTES
Melt temperature may vary with type of unit. This alloy is designed
for casting only.
TECHNICAL ASSISTANCE
Always available…
Call 1-800-999-3463 / 1-800-999-FINE
E-mail / doc@unitedpmr.com
Web-Site / www.unitedpmr.com |