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Silver alloy with hydrogen sulfide corrosion resistance and excellent die casting performance for jewelry

A hydrogen sulfide-resistant and silver alloy technology, applied in the field of alloys, can solve the problems that affect the product market sales and user experience, have not yet been obtained, limit the market share, etc., and achieve practicality, excellent filling performance, and fine grains 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 silver alloys with the ability to prevent surface discoloration is an inevitable problem in the field of jewelry materials. For a long time, many domestic research institutions and enterprises have made multi-faceted attempts, but unfortunately, no substantial progress has been made so far. Progress

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A silver alloy resistant to hydrogen sulfide corrosion and excellent die-casting properties for jewelry. In terms of weight percentage, the composition of the alloy is B: 0.1wt.%, Ca: 1.2wt.%, Al: 2.0wt.%, Ni: 1.6wt.%, In: 3.0wt.%, Ge: 1.0wt.%. , Sn: 1.5wt.%, the balance is silver. The above-mentioned a kind of silver alloy that is corrosion-resistant to hydrogen sulfide and has excellent die-casting performance for jewelry comprises the following steps: adding the above proportioned raw materials into an induction furnace under an argon environment, and adopting a graphite crucible; 10 minutes, rely on high-frequency induction furnace to stir evenly; after stirring evenly, keep warm at 1100 degrees for 1 minute and cast out of the furnace; alloy casting uses a steel mold with a diameter of 50-100mm, and uses water cooling to cool down. The ingot can be used as a casting raw material for casting in the subsequent process to prepare castings of complex shapes; the final...

Embodiment 2

[0023]A silver alloy resistant to hydrogen sulfide corrosion and excellent die-casting properties for jewelry. In terms of weight percentage, the composition of the alloy is B: 0.2wt.%, Ca: 1.5wt.%, Al: 3.0wt.%, Ni: 1.8wt.%, In: 5.0wt.%, Ge: 1.2wt.%. , Sn: 1.8wt.%, the balance is silver. The above-mentioned a kind of silver alloy that is corrosion-resistant to hydrogen sulfide and has excellent die-casting performance for jewelry comprises the following steps: adding the above proportioned raw materials into an induction furnace under an argon environment, and adopting a graphite crucible; 10 minutes, rely on high-frequency induction furnace to stir evenly; after stirring evenly, keep warm at 1100 degrees for 1 minute and cast out of the furnace; alloy casting uses a steel mold with a diameter of 50-100mm, and uses water cooling to cool down. The ingot can be used as a casting raw material for casting in the subsequent process to prepare castings of complex shapes; the final ...

Embodiment 3

[0026] A silver alloy resistant to hydrogen sulfide corrosion and excellent die-casting properties for jewelry. In terms of weight percentage, the composition of the alloy is B: 0.1wt.%, Ca: 1.4wt.%, Al: 2.5wt.%, Ni: 1.7wt.%, In: 3.2wt.%, Ge: 1.1wt.%. %, Sn: 1.6wt.%, the balance is silver. The above-mentioned a kind of silver alloy that is corrosion-resistant to hydrogen sulfide and has excellent die-casting performance for jewelry comprises the following steps: adding the above proportioned raw materials into an induction furnace under an argon environment, and adopting a graphite crucible; 10 minutes, rely on high-frequency induction furnace to stir evenly; after stirring evenly, keep warm at 1100 degrees for 1 minute and cast out of the furnace; alloy casting uses a steel mold with a diameter of 50-100mm, and uses water cooling to cool down. The ingot can be used as a casting raw material for casting in the subsequent process to prepare castings of complex shapes; the fina...

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Abstract

The invention discloses a silver alloy with hydrogen sulfide corrosion resistance and excellent die casting performance for jewelry. The alloy comprises, by weight, 0.1%-0.2% of B, 1.2%-1.5% of Ca, 2.0%-3.0% of Al, 1.6%-1.8% of Ni, 3.0%-5.0% of In, 1.0%-1.2% of Ge, 1.5%-1.8% of Sn and the balance silver. According to the silver alloy, a material solution is provided for sulphide discoloration of the silver alloy on the current market. Not only is the production cost reduced, but also the relevant production technology and equipment requirements are simplified greatly. It can be estimated thatrich economic results and social benefits can be achieved through implementation and industrialization of the silver alloy.

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 metal with a very strong white luster. In English, silver is called Silver, which means white brilliance. Sterling silver has a soft texture and good ductility. It can be made into various ornaments through drawing, hammering and other processing techniques. It was an indispensable jewelry material in ancient times. The history of human use of silver can be traced back to about 3000 BC, and silver utensils were found in the Mesopotamia civilization in Southwest Asia. In nature, it seldom exists in the form of simple substance, and generally exists in the form of compound in deep veins, which is difficult to extract, so the discovery and utilization of silver is later than that of gold. [0003] Because of its beauty and rarity, silver has become a symbol of wealth and status. Silver coins are an important currency in cir...

Claims

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Application Information

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