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Nickel-free low-silver-content Tibetan silver alloy with excellent die-casting performance and process thereof

A silver content and silver alloy technology, applied in the field of alloys, can solve problems such as affecting product market sales and user experience, unsolved industry problems, limiting product market share, etc. The effect of increasing production cost and excellent filling performance

Inactive Publication Date: 2020-07-10
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 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 nickel-free low-silver-content Tibetan silver alloy with excellent die-casting performance and its process. In terms of weight percentage, the composition of the alloy is: B:0.4wt.%, Ca:1.0wt.%, Al:2.0wt.%, Si:1.0wt.%, Os:0.2wt.%, Ge:1.0wt. %, Fe: 6.0wt.%, Ag: 29.0wt.%, and the balance is copper. The above-mentioned nickel-free low-silver-content Tibetan silver alloy with excellent die-casting performance and its process comprises the following steps: adding the above-mentioned raw materials into an argon-protected induction furnace, and using a graphite crucible; The flow of argon is protected to avoid severe burning of the alloy elements due to the large air flow; when smelting, it is kept at 1200 degrees for 10 minutes, and it is evenly stirred by a high-frequency induction furnace; after stirring, it is kept at 1200 degrees for 1 minute and cast out of the furnace; alloy casting A steel mold with a diameter of 40-60mm is used, and the temperature is cooled by wat...

Embodiment 2

[0021]A nickel-free low-silver-content Tibetan silver alloy with excellent die-casting performance and its process. In terms of weight percentage, the composition of the alloy is: B: 0.5wt.%, Ca: 1.2wt.%, Al: 3.5wt.%, Si: 1.8wt.%, Os: 0.3wt.%, Ge: 1.4wt. %, Fe: 9.0wt.%, Ag: 31.0wt.%, and the balance is copper. The above-mentioned nickel-free low-silver-content Tibetan silver alloy with excellent die-casting performance and its process comprises the following steps: adding the above-mentioned raw materials into an argon-protected induction furnace, and using a graphite crucible; The flow of argon gas is protected to avoid severe burning of alloy elements due to large air flow; heat preservation at 1200 degrees for 10 minutes during smelting, and electromagnetic stirring in a high-frequency induction furnace; after stirring evenly, heat preservation at 1200 degrees for 1 minute and casting out of the furnace; alloy casting A steel mold with a diameter of 40-60mm is used, and th...

Embodiment 3

[0024] A nickel-free low-silver-content Tibetan silver alloy with excellent die-casting performance and its process. In terms of weight percentage, the composition of the alloy is: B: 0.4wt.%, Ca: 1.1wt.%, Al: 2.4wt.%, Si: 1.5wt.%, Os: 0.2wt.%, Ge: 1.2wt. %, Fe: 8.0wt.%, Ag: 29.0wt.%, and the balance is copper. The above-mentioned nickel-free low-silver-content Tibetan silver alloy with excellent die-casting performance and its process comprises the following steps: adding the above-mentioned raw materials into an argon-protected induction furnace, and using a graphite crucible; The flow of argon gas is protected to avoid severe burning of alloy elements due to large air flow; heat preservation at 1200 degrees for 10 minutes during smelting, and electromagnetic stirring in a high-frequency induction furnace; after stirring evenly, heat preservation at 1200 degrees for 1 minute and casting out of the furnace; alloy casting A steel mold with a diameter of 40-60mm is used, and t...

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Abstract

The invention discloses a nickel-free low-silver-content Tibetan silver alloy with excellent die-casting performance and a process thereof. The alloy is prepared from the following components of, in percentage by weight, 0.4w%-0.5w% of B, 1.0w%-1.2w% of Ca, 2.0w%-3.5w% of Al, 1.0w%-1.8w% of Si, 0.2w%-0.3w% of Os, 1.0w%-1.4w% of Ge, 6.0w%-9.0w% of Fe, 29.0w%-31.0w% of Ag and the balance copper. Thenickel-free low-silver-content Tibetan silver alloy is a novel nickel-free Tibetan silver alloy which does not exist in the market, and has excellent die-casting performance; and through industrialization of the alloy, the problem of the current Tibetan silver alloy can be solved, and the variety of the low-silver-content alloy for jewelry in the market can be greatly enriched.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a silver alloy. Background technique [0002] With its unique bright white color and physical and chemical properties, silver has been widely used as an ornament material since ancient times and is deeply loved by people. This year, with the arrival of the white storm, silver jewelry is even more popular, and the demand has increased significantly. In the past ten years, silver jewelry has become the rapid growth point of jewelry in my country. Pure silver has excellent ductility, but low strength and is prone to scratches and deformation. When various alloying elements are added to pure silver and their content is controlled, various silver alloys are produced. [0003] When adding a very small amount of alloying elements, 999 silver, 990 silver, 925 silver, etc. are produced. 925 sterling silver is a silver-copper alloy containing 92.5wt% silver. In order to strengthen the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/02C22F1/08C22F1/02
CPCC22C1/02C22C9/00C22F1/02C22F1/08
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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