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Ca- and Sn-containing gold alloy for corrosion-resistant and deformation-resistant 18K rose-bengal gold

A deformation-resistant, rose-red technology, applied in the field of gold alloys, to achieve great corrosion resistance, improve corrosion resistance and processability, and improve the effect of discoloration resistance

Inactive Publication Date: 2018-10-26
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, there is no complete solution to prevent rose gold from fading during the 10-year service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A corrosion and deformation resistant 18K rose red gold alloy containing Ca and Sn. In terms of weight percentage, the composition of the alloy is Ca: 0.2wt.%, Hf: 0.4wt.%, Sn: 1.5wt.%, Se: 0.2wt.%, Ag: 6.0wt.%, Au: 74.0wt.% , The balance is copper. The method for preparing the above-mentioned corrosion-resistant and deformable 18K rose red gold containing Ca and Sn gold alloy includes the following steps: adding the raw materials in the above proportion into an induction furnace protected by argon gas, and using a graphite crucible; The flow of argon is protected to avoid serious burning of alloy elements due to large airflow; heat preservation at 1150 degrees for 10 minutes during smelting, and stir evenly by high-frequency induction furnace; after stirring evenly, hold at 1250 degrees for 1 minute and cast out; gold alloy The casting adopts a steel mold with a diameter of 100-200mm, and the temperature is cooled by water cooling. The obtained ingot is rolled at room...

Embodiment 2

[0019] A corrosion and deformation resistant 18K rose red gold alloy containing Ca and Sn. In terms of weight percentage, the composition of the alloy is Ca: 0.4wt.%, Hf: 0.6wt.%, Sn: 3.0wt.%, Se: 0.4wt.%, Ag: 8.0wt.%, Au: 76.0wt.% , The balance is copper. The method for preparing the above-mentioned corrosion-resistant and deformable 18K rose red gold containing Ca and Sn gold alloy includes the following steps: adding the raw materials in the above proportion into an induction furnace protected by argon gas, and using a graphite crucible; The flow of argon is protected to avoid serious burning of alloy elements due to large airflow; heat preservation at 1150 degrees for 10 minutes during smelting, and stir evenly by high-frequency induction furnace; after stirring evenly, hold at 1250 degrees for 1 minute and cast out; gold alloy The casting adopts a steel mold with a diameter of 100-200mm, and the temperature is cooled by water cooling. The obtained ingot is rolled at room...

Embodiment 3

[0022] A corrosion and deformation resistant 18K rose red gold alloy containing Ca and Sn. In terms of weight percentage, the composition of the alloy is Ca: 0.3wt.%, Hf: 0.5wt.%, Sn: 1.8wt.%, Se: 0.3wt.%, Ag: 6.5wt.%, Au: 75.0wt.% , The balance is copper. The method for preparing the above-mentioned corrosion-resistant and deformable 18K rose red gold containing Ca and Sn gold alloy includes the following steps: adding the raw materials in the above proportion into an induction furnace protected by argon gas, and using a graphite crucible; The flow of argon is protected to avoid serious burning of alloy elements due to large airflow; heat preservation at 1150 degrees for 10 minutes during smelting, and stir evenly by high-frequency induction furnace; after stirring evenly, hold at 1250 degrees for 1 minute and cast out; gold alloy The casting adopts a steel mold with a diameter of 100-200mm, and the temperature is cooled by water cooling. The obtained ingot is rolled at room...

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PUM

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Abstract

The invention discloses a Ca- and Sn-containing gold alloy for corrosion-resistant and deformation-resistant 18K rose-bengal gold. The Ca- and Sn-containing gold alloy comprises the components of, byweight percentage, 0.2-0.4wt.% of Ca, 0.4-0.6wt.% of Hf, 1.5-3.0wt.% of Sn, 0.2-0.4wt.% of Se, 6.0-8.0wt.% of Ag, 74.0-76.0wt.% of Au, and the balance copper. The patent solves the problem that existing 18K rose gold is discolored during use. Through innovation and optimization of alloy components, a development bottleneck of 18K rose gold materials for jewelries is broken through. It can be estimated that implementation and industrialization of the Ca- and Sn-containing gold alloy will bring plentiful and substantial economic gains 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 has a very wide application field, and it has a wide range of applications in the electronics, communications, aerospace, chemical, medical and other sectors and people's daily lives. Jewelry gold is an important application field of gold. In addition to the reasons for the preservation of gold, clear and favorite colors are also an important factor. For gold alloys, except for white gold, everything else is called color gold. The most common one in life is 18K color gold. K is a symbol used internationally to express the purity of gold. 18K gold refers to gold with a gold content of 75%, and the remaining 25% is composed of other metals in a certain proportion. The reason for the color is because the metal ratio is different. Many gold alloys have these functions, such as gold-nickel alloys, gold-indium alloys, gold-copper alloys, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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