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925 silver alloy with red appearance and resistance to hydrogen sulfide corrosion and process thereof

A technology that is resistant to hydrogen sulfide and silver alloys, applied in the field of alloys, can solve problems affecting product market sales and user experience, limit market share, etc., to achieve excellent color appearance and processing performance, excellent mechanical and processing performance, excellent resistance. The effect of color changing properties

Inactive Publication Date: 2018-11-20
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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A 925 silver alloy with red appearance and hydrogen sulfide corrosion resistance and its technology. In terms of weight percentage, the composition of the alloy is B:0.1wt.%, Li:0.6wt.%, Mo:0.2wt.%, Os:0.1wt.%, Fe:1.0wt.%, Ti:0.2wt.% , Ag: 92.0.0wt.%, the balance is copper. The above-mentioned 925 silver alloy with red appearance and resistance to hydrogen sulfide corrosion and its process comprises the following steps: adding the above proportioned raw materials into an induction furnace under an argon environment, and using a graphite crucible; keeping the temperature at 1200 degrees during smelting 10 minutes, rely on high-frequency induction furnace to stir evenly; after stirring evenly, keep warm at 1200 degrees for 1 minute and cast out of the furnace; alloy casting uses a steel mold with a diameter of 20-30mm, and uses water cooling to cool down. Roll the obtained ingot at room temperature, and the amount of rolling in each pass is 20-30%; after every two rollin...

Embodiment 2

[0021] A 925 silver alloy with red appearance and hydrogen sulfide corrosion resistance and its technology. In terms of weight percentage, the composition of the alloy is B:0.2wt.%, Li:0.8wt.%, Mo:0.3wt.%, Os:0.2wt.%, Fe:1.5wt.%, Ti:0.4wt.% , Ag: 93.0wt.%, the balance is copper. The above-mentioned 925 silver alloy with red appearance and resistance to hydrogen sulfide corrosion and its process comprises the following steps: adding the above proportioned raw materials into an induction furnace under an argon environment, and using a graphite crucible; keeping the temperature at 1200 degrees during smelting 10 minutes, rely on high-frequency induction furnace to stir evenly; after stirring evenly, keep warm at 1200 degrees for 1 minute and cast out of the furnace; alloy casting uses a steel mold with a diameter of 20-30mm, and uses water cooling to cool down. Roll the obtained ingot at room temperature, and the amount of rolling in each pass is 20-30%; after every two rollings...

Embodiment 3

[0024] A 925 silver alloy with red appearance and hydrogen sulfide corrosion resistance and its technology. In terms of weight percentage, the composition of the alloy is B:0.1wt.%, Li:0.7wt.%, Mo:0.2wt.%, Os:0.1wt.%, Fe:1.2wt.%, Ti:0.3wt.% , Ag: 92.0wt.%, the balance is copper. The above-mentioned 925 silver alloy with red appearance and resistance to hydrogen sulfide corrosion and its process comprises the following steps: adding the above proportioned raw materials into an induction furnace under an argon environment, and using a graphite crucible; keeping the temperature at 1200 degrees during smelting 10 minutes, rely on high-frequency induction furnace to stir evenly; after stirring evenly, keep warm at 1200 degrees for 1 minute and cast out of the furnace; alloy casting uses a steel mold with a diameter of 20-30mm, and uses water cooling to cool down. Roll the obtained ingot at room temperature, and the amount of rolling in each pass is 20-30%; after every two rollings...

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Abstract

The invention discloses a 925 silver alloy with a red appearance and resistance to hydrogen sulfide corrosion and a process thereof. The alloy comprises the compositions of, by weight, 0.1 to 0.2 wt.%of B, 0.6 to 0.8 wt.% of Li, 0.2 to 0.3 wt.% of Mo, 0.1 to 0.2 wt.% of Os, 1.0 to 1.5 wt.% of Fe, 0.2 to 0.4 wt.% of Ti, and 92.0 to 93.0 wt.% of Ag, and the balance copper. According to the 925 silver alloy with the red appearance and the resistance to hydrogen sulfide corrosion and the process thereof, a novel material with the red appearance is provided for the 925 silver alloy for jewelry ofChina, and the material has the excellent characteristic of resistance to blackening by hydrogen sulfide corrosion. The implementation and industrialization of the material can effectively meet the demands for product upgrading and industrial upgrading in the jewelry industry of China, and can achieve fruitful economic results and social benefits while solving industrial problems.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a silver alloy. Background technique [0002] Silver is a silver-white precious metal with a charming color, and it has been used to make jewelry since early. In addition, silver also has a very wide range of uses in industry, such as making use of its conductivity to make electronic components and instruments of various precision instruments. Because silver is too soft, it is often doped with other components to form silver alloys. The silver alloy commonly used to make jewelry is sterling silver, which has been used as standard silver in the UK for 800 years, and its composition is 92.5Ag-7.5Cu. This silver alloy is often referred to as 925 silver, which generally refers to a silver product with a silver content of about 92.5wt%. [0003] 925 silver quickly became popular all over the world because it can better inlay various gemstones and produce silver products with various...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C5/06C22C1/02C22F1/14A44C27/00
CPCC22C5/06A44C27/003C22C1/02C22F1/14
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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