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Gold alloy with excellent elastic performance and for 18K gold

An elastic performance, 18K technology, applied in the field of gold alloys, can solve problems such as lack of progress, and achieve the effect of solving the problem of large hot cracking tendency, hindering dendrite growth and low production cost

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

AI Technical Summary

Problems solved by technology

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

Method used

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Examples

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Embodiment 1

[0018] A gold alloy for 18K gold with excellent elastic properties. By weight percentage, the composition of the alloy is: Sr: 0.8wt.%, Ge: 1.0wt.%, Ho: 0.2wt.%, Pr: 0.2wt.%, V: 0.3wt.%, S: 0.1wt.%. %, Ag: 8.0wt.%, Au: 74.0wt.%, and the balance is platinum.

[0019] The above-mentioned preparation method of 18K gold alloy with excellent elastic properties comprises the following steps: adding the raw materials proportioned as above into an argon-protected induction furnace, and using a graphite crucible; after the metal is melted, a low-flow argon is used. Gas protection to avoid serious burning of alloy elements due to large air flow; heat preservation at 1150 degrees for 10 minutes during smelting, and uniform electromagnetic stirring by high-frequency induction furnace; 100-200mm steel mold, and use water cooling to cool down. The obtained ingot is rolled at room temperature, and the rolling reduction per pass is 30-40%; the intermediate annealing temperature is 680 degre...

Embodiment 2

[0022] A gold alloy for 18K gold with excellent elastic properties. By weight percentage, the composition of the alloy is: Sr: 1.0wt.%, Ge: 1.2wt.%, Ho: 0.3wt.%, Pr: 0.4wt.%, V: 0.5wt.%, S: 0.3wt.%. %, Ag: 10.0wt.%, Au: 76.0wt.%, and the balance is platinum. The above-mentioned preparation method of 18K gold alloy with excellent elastic properties comprises the following steps: adding the raw materials proportioned as above into an argon-protected induction furnace, and using a graphite crucible; after the metal is melted, a low-flow argon is used. Gas protection to avoid serious burning of alloy elements due to large air flow; heat preservation at 1150 degrees for 10 minutes during smelting, and uniform electromagnetic stirring by high-frequency induction furnace; 100-200mm steel mold, and use water cooling to cool down. The obtained ingot is rolled at room temperature, and the rolling reduction per pass is 30-40%; the intermediate annealing temperature is 680 degrees after...

Embodiment 3

[0025] A gold alloy for 18K gold with excellent elastic properties. According to the weight percentage, the composition of the alloy is: Sr: 0.9wt.%, Ge: 1.1wt.%, Ho: 0.2wt.%, Pr: 0.3wt.%, V: 0.4wt.%, S: 0.2wt. %, Ag: 9.0wt.%, Au: 75.0wt.%, and the balance is platinum. The above-mentioned preparation method of 18K gold alloy with excellent elastic properties comprises the following steps: adding the raw materials proportioned as above into an argon-protected induction furnace, and using a graphite crucible; after the metal is melted, a low-flow argon is used. Gas protection to avoid serious burning of alloy elements due to large air flow; heat preservation at 1150 degrees for 10 minutes during smelting, and uniform electromagnetic stirring by high-frequency induction furnace; 100-200mm steel mold, and use water cooling to cool down. The obtained ingot is rolled at room temperature, and the rolling reduction per pass is 30-40%; the intermediate annealing temperature is 680 de...

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Abstract

The invention discloses a gold alloy with excellent elastic performance and for 18K gold. The alloy comprises the following components in percentage by weight: 0.8wt.%-1.0wt.% of Sr, 1.0wt.%-1.2wt.% of Ge, 0.2wt.%-0.3wt.% of Ho, 0.2wt.%-0.4wt.% of Pr, 0.3wt.%-0.5wt.% of V, 0.1wt.%-0.3wt.% of S, 8.0wt.%-10.0wt.% of Ag, 74.0wt.%-76.0wt.% of Au and the balance platinum. According to the alloy, the current situations of low elasticity and lagged technology of a present 18K gold material are improved. Through an advanced material design, the phenomenon of brittle failure of the alloy after being used at a low temperature is solved while the elastic performance of 18K gold is greatly improved. Implementation and industrialization for the material are predicted to achieve rich economic gain and social benefits.

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 exploited by human beings. It is an important raw material for making jewelry and coins, and an important reserve material for 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 area of ​​application for gold is decorative materials, including jewelry. Gold can also be used for daily necessities, such as gold-plated clocks, belt buckles, lighters, pens, etc. The watch kingdom of Switzerland is not a big country, but its jewelry industry uses about 40 tons of gold every year, of which 95% is used in the watchmaking industry. A single watch factory in Japan consumes 1 ton of gold salt a year, which is equivalent to 680 kilograms of gold. Gold is u...

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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