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925 silver alloy with yellow appearance and high hardness and process thereof

A high hardness, silver alloy technology, applied in the field of alloys, can solve the problems of restricting market share, affecting product market sales and user experience, etc., to achieve excellent color appearance and processing performance, excellent high hardness and friction resistance performance, smelting and excellent processing performance

Inactive Publication Date: 2018-09-28
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 yellow appearance and high hardness and its technology. In terms of weight percentage, the composition of the alloy is P:0.2wt.%, Li:0.5wt.%, Zn:1.4wt.%, Re:0.2wt.%, Co:1.0wt.%, W:0.5wt.% , Ag: 92.0.0wt.%, the balance is copper. The above-mentioned one has a yellow appearance and has high hardness 925 silver alloy and its technology, comprising the following steps: adding the raw materials in the above ratio into an induction furnace under an argon environment, and using a graphite crucible; Minutes, stir evenly by high-frequency induction furnace electromagnetically; 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, the intermediate annealing temperature is 600 degrees, and the temperature ...

Embodiment 2

[0021] A 925 silver alloy with yellow appearance and high hardness and its technology. In terms of weight percentage, the composition of the alloy is P:0.3wt.%, Li:0.6wt.%, Zn:1.8wt.%, Re:0.4wt.%, Co:1.5wt.%, W:0.5wt.% , Ag: 93.0wt.%, the balance is copper. The above-mentioned one has a yellow appearance and has high hardness 925 silver alloy and its technology, comprising the following steps: adding the raw materials in the above ratio into an induction furnace under an argon environment, and using a graphite crucible; Minutes, stir evenly by high-frequency induction furnace electromagnetically; 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, the intermediate annealing temperature is 600 degrees, and the temperature is...

Embodiment 3

[0024] A 925 silver alloy with yellow appearance and high hardness and its technology. In terms of weight percentage, the composition of the alloy is P:0.2wt.%, Li:0.5wt.%, Zn:1.5wt.%, Re:0.3wt.%, Co:1.2wt.%, W:0.4wt.% , Ag: 92.0.0wt.%, the balance is copper. The above-mentioned one has a yellow appearance and has high hardness 925 silver alloy and its technology, comprising the following steps: adding the raw materials in the above ratio into an induction furnace under an argon environment, and using a graphite crucible; Minutes, stir evenly by high-frequency induction furnace electromagnetically; 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, the intermediate annealing temperature is 600 degrees, and the temperature ...

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Abstract

The invention discloses 925 silver alloy with a yellow appearance and high hardness and a process thereof. The 925 silver alloy is prepared from the following components in percentage by weight of 0.2-0.3 wt% of P, 0.5-0.6 wt% of Li, 1.4-1.8 wt% of Zn, 0.2-0.4 wt% of Re, 1.0-1.5 wt% of Co, 0.3-0.5 wt% of W, 92.0-93.0 wt% of Ag and the rest of copper. The 925 silver alloy for jewelries in China hasthe yellow appearance and excellent characteristics of high hardness and wear resistance. The implementation and industrialization of the 925 silver alloy can effectively promote the update of jewelry industry products in China and meet the need of industry upgrade, and the industry problem can be solved and meanwhile fruitful economic results and social benefits can be achieved.

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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IPC IPC(8): C22C5/08C22C1/02C22F1/14C22F1/02C25D11/34
CPCC22C5/08C22C1/02C22F1/02C22F1/14C25D11/026C25D11/34
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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