APPLY: Nickel-platinum, 14k, 18k (750) -
Ingredients of 1000grams 18k Platinum alloy:
750 grams granular pure gold
1.Please prepare a new ceramic crucible, and
a new ceramic or stone gold stirring rod,
use new products in order to avoid
contamination of residues of the last
2.All metal must be completely dry before
fed into the crucible melting
3.Melting formula: Calculate the target per
4.Melt 750grams of pure gold in 1100℃
5.Piece 250 grams of W02 slowly when the
pure gold melted to liquid. Do not add all
W02 on once, because if it is done so, the
temperature of the liquid metal will be
immediately decreased, and then cured. Once
cured, it is difficult to melt. Make sure
all W02 operation are absorbed completely.
6.Fully stirred. Stirring rod must be first
heating before contact with the liquefied
7.Mold。The temperature should be within 1050
and 1120, which is relevant with mold
equipment and material.
8.Quench for 20-45 minutes after casting.
Detect every cold quenching cycle, wrong
timing will make it too soft or too hard.
9.Extended into sheet or filamentous. Use
the box-shaped extended furnace if you can.
Keep metal set for 20 minutes at 720 degrees
heating zone. Make sure the metal red
disappears before take the metal away from
heating zone and cold quenching in water. Do
not quench in water directly.