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Gold alloy with excellent elastic performance for 22 K gold

A technology of elastic properties and alloys, which is applied in the field of gold alloys, can solve problems such as no progress, and achieve the effects of solving hot cracking tendency, refining the as-cast structure, and increasing the liquidus temperature range

Inactive Publication Date: 2018-11-13
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Regrettably, however, no substantial progress has been made so far

Method used

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Embodiment 1

[0018] A gold alloy for 22K yellow gold with excellent elastic properties. In terms of weight percentage, the composition of the alloy is: Sr: 0.5wt.%, Nb: 1.2wt.%, Ir: 0.3wt.%, Yb: 0.1wt.%, Na: 0.3wt.%, B: 0.1wt. %, Ag: 2.0wt.%, Au: 90.0wt.%, and the balance is platinum. The preparation method of the above-mentioned 22K gold alloy with excellent elastic properties comprises the following steps: adding the above proportioned raw materials into an argon-protected induction furnace, and using a graphite crucible; Gas protection to avoid severe burning of alloy elements due to large airflows; heat preservation at 1150 degrees for 10 minutes during smelting, and electromagnetic stirring in a high-frequency induction furnace; after stirring evenly, heat preservation at 1250 degrees for 1 minute and cast out of the furnace; gold alloy casting adopts diameter 100-200mm steel mold, and use water cooling to cool down. The obtained ingot is rolled at room temperature, and the amount o...

Embodiment 2

[0021] A gold alloy for 22K yellow gold with excellent elastic properties. In terms of weight percentage, the composition of the alloy is: Sr: 0.6wt.%, Nb: 1.5wt.%, Ir: 0.5wt.%, Yb: 0.3wt.%, Na: 0.5wt.%, B: 0.3wt. %, Ag: 4.0wt.%, Au: 92.0wt.%, and the balance is platinum. The preparation method of the above-mentioned 22K gold alloy with excellent elastic properties comprises the following steps: adding the above proportioned raw materials into an argon-protected induction furnace, and using a graphite crucible; Gas protection to avoid severe burning of alloy elements due to large airflows; heat preservation at 1150 degrees for 10 minutes during smelting, and electromagnetic stirring in a high-frequency induction furnace; after stirring evenly, heat preservation at 1250 degrees for 1 minute and cast out of the furnace; gold alloy casting adopts diameter 100-200mm steel mold, and use water cooling to cool down. The obtained ingot is rolled at room temperature, and the amount o...

Embodiment 3

[0024] A gold alloy for 22K yellow gold with excellent elastic properties. In terms of weight percentage, the composition of the alloy is: Sr: 0.5wt.%, Nb: 1.4wt.%, Ir: 0.4wt.%, Yb: 0.2wt.%, Na: 0.4wt.%, B: 0.2wt. %, Ag: 3.0wt.%, Au: 91.0wt.%, and the balance is platinum. The preparation method of the above-mentioned 22K gold alloy with excellent elastic properties comprises the following steps: adding the above proportioned raw materials into an argon-protected induction furnace, and using a graphite crucible; Gas protection to avoid severe burning of alloy elements due to large airflows; heat preservation at 1150 degrees for 10 minutes during smelting, and electromagnetic stirring in a high-frequency induction furnace; after stirring evenly, heat preservation at 1250 degrees for 1 minute and cast out of the furnace; gold alloy casting adopts diameter 100-200mm steel mold, and use water cooling to cool down. The obtained ingot is rolled at room temperature, and the amount o...

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Abstract

The invention discloses a gold alloy with excellent elastic performance for 22 K gold. The gold alloy comprises the following components of, by weight, 0.5-0.6wt.% of Sr, 1.2-1.5wt.% of Nb, 0.3-0.5wt.% of Ir, 0.1-0.3wt.% of Yb, 0.3-0.5wt.% of Na, 0.1-0.3wt.% of B, 2.0-4.0wt.% of Ag, 90.0-92.0wt.% of Au and the balance of platinum. According to the gold alloy, the current problems that an existing22 K gold material is insufficient in elasticity and is laggard in technology are solved; the advanced material design is achieved, so that the elastic performance of the 22 K gold is greatly improved, and meanwhile, the phenomenon that the 22 K gold alloy is brittle after being used at a low temperature is also avoided; and the effects that the implementation and industrialization of the alloy material can obtain good economic and social benefits can be predicted.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a gold alloy. Background technique [0002] Gold is a precious metal and one of the earliest metals discovered and developed by human beings. It is an important raw material for making jewelry and coins, and it is also an important reserve material of the country. It is known as the king of metals. It is not only regarded as a symbol of beauty and wealth, but also benefits human life with its unique value. An important application field of gold is decorative materials, including jewelry and so on. Gold can also be used in daily necessities, such as gold-plated clocks, belt buckles, lighters, pens, etc. Watch Kingdom Switzerland is not a big country, but its jewelry industry consumes about 40 tons of gold every year, 95% of which are used in watchmaking. Only one watch factory in Japan consumes 1 ton of gold salt a year, equivalent to 680 kilograms of gold. The use of gold is ...

Claims

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Application Information

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IPC IPC(8): C22C5/02C22C1/02C22F1/14
CPCC22C5/02C22C1/02C22F1/14
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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