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Blue 18K gold for hydrogen sulfide corrosion-resisting jewelry and process thereof

A technology that is resistant to hydrogen sulfide and jewelry, applied in the field of gold alloys, can solve problems that have not yet made progress, affect product market sales and user experience, limit market share, etc., achieve strong resistance to intergranular corrosion, good welding performance, Aesthetically pleasing effect

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

The long-term unsolved problems in the industry not only affect the market sales and user experience of related products, but also seriously limit the market share of such products in the international field
The development and industrialization of blue K gold with advanced performance is already an inevitable problem in the field of jewelry. For a long time, many domestic research institutions and enterprises have made multi-faceted attempts, but unfortunately, so far, no substantial progress has been made. sexual progress

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A blue 18K gold for hydrogen sulfide corrosion-resistant jewelry and its technology. In terms of weight percentage, the composition of the alloy is Be: 0.1wt.%, Mo: 1.2wt.%, V: 0.4wt.%, In: 1.5wt.%, Sc: 0.4wt.%, Sm: 0.1wt.% , Au: 74.0wt.%, the balance is aluminum. The above-mentioned blue 18K gold for jewelry resistant to hydrogen sulfide corrosion and its process include the following steps: adding the above proportioned raw materials into an argon-protected induction furnace, and using a graphite crucible; Protected by argon gas to avoid serious burning of alloy elements due to large air flow; heat preservation at 1200 degrees for 10 minutes during smelting, and electromagnetic stirring by high-frequency induction furnace; after stirring evenly, heat preservation at 1200 degrees for 1 minute and cast out of the furnace; gold alloy casting adopts The steel mold with a diameter of 50-100mm is cooled by water cooling. The obtained ingot is rolled at room temperature, a...

Embodiment 2

[0021]A blue 18K gold for hydrogen sulfide corrosion-resistant jewelry and its technology. In terms of weight percentage, the composition of the alloy is Be:0.2wt.%, Mo:1.5wt.%, V:0.6wt.%, In:1.8wt.%, Sc:0.5wt.%, Sm:0.2wt.%. , Au: 76.0wt.%, the balance is aluminum. The above-mentioned blue 18K gold for jewelry resistant to hydrogen sulfide corrosion and its process include the following steps: adding the above proportioned raw materials into an argon-protected induction furnace, and using a graphite crucible; Protected by argon gas to avoid serious burning of alloy elements due to large air flow; heat preservation at 1200 degrees for 10 minutes during smelting, and electromagnetic stirring by high-frequency induction furnace; after stirring evenly, heat preservation at 1200 degrees for 1 minute and cast out of the furnace; gold alloy casting adopts The steel mold with a diameter of 50-100mm is cooled by water cooling. The obtained ingot is rolled at room temperature, and the...

Embodiment 3

[0024] A blue 18K gold for hydrogen sulfide corrosion-resistant jewelry and its technology. In terms of weight percentage, the composition of the alloy is Be: 0.1wt.%, Mo: 1.4wt.%, V: 0.5wt.%, In: 1.6wt.%, Sc: 0.4wt.%, Sm: 0.1wt.%. , Au: 75.0wt.%, the balance is aluminum. The above-mentioned blue 18K gold for jewelry resistant to hydrogen sulfide corrosion and its process include the following steps: adding the above proportioned raw materials into an argon-protected induction furnace, and using a graphite crucible; Protected by argon gas to avoid serious burning of alloy elements due to large air flow; heat preservation at 1200 degrees for 10 minutes during smelting, and electromagnetic stirring by high-frequency induction furnace; after stirring evenly, heat preservation at 1200 degrees for 1 minute and cast out of the furnace; gold alloy casting adopts The steel mold with a diameter of 50-100mm is cooled by water cooling. The obtained ingot is rolled at room temperature, ...

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PUM

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Abstract

The invention discloses blue 18K gold for hydrogen sulfide corrosion-resisting jewelry and a process thereof. The blue 18K gold is prepared from the following alloy components in percentage by weight:0.1-0.2wt.% of Be, 1.2-1.5wt.% of Mo, 0.4-0.6wt.% of V, 1.5-1.8wt.% of In, 0.4-0.5wt.% of Sc, 0.1-0.2wt.% of Sm, 74.0-76.0wt.% of Au and the balance aluminum. The blue 18K gold overcomes the currentsituation that existing blue K gold is insufficient in performance, and breaks through the development bottleneck in the field of jewelry effectively. It can be expected that plenteous economical fruits and social benefits can be obtained by implementation and industrialization of the material.

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. Soft gold deforms easily and wears out easily. Therefore, people began to try to add a small amount of other alloying elements to pure gold to increase the hardness of gold. Among them, silver, copper, zinc, etc. are all metals that are commonly added to gold to increase its strength and toughness. [0003] Gold with alloying elements added, that is, gold alloy. The system for determining the gold content in gold alloys is called Karat in English, and it can also be abbrevia...

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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