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Formula and preparation method of purple K gold

A purple and formula technology, applied in the field of formula and preparation of purple K gold, can solve problems such as difficult processing, achieve the effect of improving processing performance and increasing ductility

Active Publication Date: 2012-09-19
GUANGDONG CHJ IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Purple K gold is a metal alloy Au-Al formed of gold and aluminum. Its lavender is quite attractive, but it is difficult to process because it is brittle and brittle.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A formula of purple K gold for rings, including the following substances in weight percentage: 21.2% aluminum, 0.7% copper, 0.5% rare earth, the rare earth contains at least one of lanthanum and cerium, and the balance is gold.

[0020] The method for preparing the above-mentioned purple K gold ring comprises the following steps:

[0021] (1) Calculate the weight of each substance according to the above formula and the weight of the alloy to be prepared;

[0022] (2) Add gold nuggets into the crucible and heat it to 1100°C to 1150°C under the protection of an inert atmosphere to completely melt it;

[0023] (3) According to the formula, first add aluminum to the crucible, then add copper, and finally add rare earth, stir evenly, and keep warm at 1130°C for 1 hour under the protection of an inert atmosphere;

[0024] (4) Invert molding, pour the molten ingredients obtained in the previous step into a plaster mold to cast a ring casting, and anneal the casting at 1000°C ...

Embodiment 2

[0028] A formula of purple K gold for pendants, including the following substances in weight percentage: 21.6% aluminum, 0.3% copper, 0.03% rare earth, rare earth contains at least lanthanum, cerium, praseodymium, neodymium, gadolinium, terbium, dysprosium, One of holmium, erbium, thulium, lutetium, scandium, and yttrium, and the balance is gold.

[0029] The method for preparing the above-mentioned purple K gold pendant comprises the following steps:

[0030] (1) Calculate the weight of each substance according to the above formula and the weight of the alloy to be prepared;

[0031] (2) Add gold nuggets into the crucible and heat it to 1150°C to 1200°C under the protection of an inert atmosphere to completely melt it;

[0032] (3) According to the formula, first add aluminum to the crucible, then add copper, and finally add rare earth, stir evenly, and keep warm at 1100°C for 0.5 hours under the protection of an inert atmosphere;

[0033] (4) Invert molding, pour the molte...

Embodiment 3

[0037] 21.2% to 21.6% of aluminum, 0.3% to 0.7% of copper, 0.03% to 0.5% of rare earth, and the balance is gold.

[0038] A formula for purple K gold used for diamond rings, including the following substances in weight percentages: 21.3% aluminum, 0.3% copper, 0.5% rare earth, the rare earth contains at least one of lanthanum and cerium, and the balance is gold.

[0039] The method for preparing the above-mentioned purple K gold diamond ring comprises the following steps:

[0040] (1) Calculate the weight of each substance according to the above formula and the weight of the alloy to be prepared;

[0041] (2) Add gold nuggets into the crucible and heat it to 1150°C to 1200°C under the protection of an inert atmosphere to completely melt it;

[0042] (3) According to the formula, first add aluminum to the crucible, then add copper, and finally add rare earth, stir evenly, and keep warm at 1100°C for 45 minutes under the protection of an inert atmosphere;

[0043] (4) Invert m...

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PUM

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Abstract

The invention discloses a formula of purple K gold. The formula comprises the following substances in percentage by weight: 21.2-21.6 percent of aluminum, 0.3-0.7 percent of copper, 0.03-0.5 percent of rare earth and the balance of gold. The invention also discloses a preparation method of the purple K gold. The method comprises the following steps of: (1) selecting a group of proportions according to the formula range, and calculating the weight of each substance according to the weight of the alloy which is required to be prepared; (2) adding a gold block into a crucible and heating to 1,100-1,200 DEG C to fully melt the gold block; (3) firstly adding the aluminum into the crucible, then adding the copper and finally adding the rare earth according to the formula, stirring uniformly andpreserving heat at 1,100-1,130 DEG C for 0.5-1 hour; and (4) molding and annealing a molded rough blank at 900-1,100 DEG C for 25-50 hours to prepare the purple K gold. According to the formula and the preparation method, the machining performance of the purple gold is effectively improved while a lilac color of the K gold is guaranteed, and the ductility of the K gold is improved, so that the purple K gold can be machined and applied in more ornaments.

Description

technical field [0001] The invention relates to a gold alloy, in particular to a formula and a preparation method of purple K gold. Background technique [0002] One of the characteristics of gold is its softness, so when gems are inlaid, it is easy to fall off due to insufficient strength. Therefore, people add silver, copper, zinc and other metals to gold to increase the strength and toughness of gold. The gold ornaments made in this way are also called K gold. In jewelry inlays, almost all K golds of different K numbers are used to inlay gems. This not only achieves the nobility of gold, but also makes up for its shortcomings, and can be formulated into various colors according to needs. K gold is the most commonly used and most varied material in jewelry. The relationship between K number and gold content: Au wt%=K / 24×100%. K gold can be made into various colors according to needs. The internationally popular K gold jewelry is available in various colors, and the comm...

Claims

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Application Information

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IPC IPC(8): C22C5/02C22C1/02C22F1/14
Inventor 廖创宾
Owner GUANGDONG CHJ IND
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