Miao silver alloy used for nickel-free high-elasticity-modulus jewelry resistant to hydrogen sulfide corrosion and process of Miao silver alloy

A hydrogen sulfide-resistant and high-elasticity technology, applied in the field of alloys, can solve the problem of lack of rich series of silver alloys, and achieve the effects of excellent mechanical properties, high elastic modulus, and excellent cold stamping performance.

Inactive Publication Date: 2018-10-19
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] But it is a pity that Miao silver alloy has not formed a rich series like K gold at present.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Nickel-free high elastic modulus hydrogen sulfide corrosion-resistant silver seedling alloy and its technology. In terms of weight percentage, the composition of the alloy is B: 0.3wt.%, Mg: 2.0wt.%, Ge: 0.8wt.%, In: 1.5wt.%, Y: 1.25wt.%, Fe: 4.0wt.% , Ag: 40.0wt.%, the balance is copper. The above-mentioned nickel-free high elastic modulus hydrogen sulfide corrosion-resistant silver seedling alloy and its technology for jewelry include the following steps: adding the above proportioned raw materials into an induction furnace under an argon environment, and using a graphite crucible; melting at 1400 10 minutes at high temperature, and evenly stirred by high-frequency induction furnace electromagnetically; after stirring evenly, heat at 1400°C 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. The obtained ingot is rolled at room temperature, and the amount of rolling in each pass is...

Embodiment 2

[0022] Nickel-free high elastic modulus hydrogen sulfide corrosion-resistant silver seedling alloy and its technology. In terms of weight percentage, the composition of the alloy is B: 0.5wt.%, Mg: 3.0wt.%, Ge: 1.0wt.%, In: 1.8wt.%, Y: 1.5wt.%, Fe: 6.0wt.% , Ag: 50.0wt.%, the balance is copper. The above-mentioned nickel-free high elastic modulus hydrogen sulfide corrosion-resistant silver seedling alloy and its technology for jewelry include the following steps: adding the above proportioned raw materials into an induction furnace under an argon environment, and using a graphite crucible; melting at 1400 10 minutes at high temperature, and evenly stirred by high-frequency induction furnace electromagnetically; after stirring evenly, heat at 1400°C 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. The obtained ingot is rolled at room temperature, and the amount of rolling in each pass is ...

Embodiment 3

[0025] Nickel-free high elastic modulus hydrogen sulfide corrosion-resistant silver seedling alloy and its technology. In terms of weight percentage, the composition of the alloy is B: 0.4wt.%, Mg: 2.5wt.%, Ge: 0.9wt.%, In: 1.6wt.%, Y: 1.4wt.%, Fe: 4.5wt.% , Ag: 42.0wt.%, the balance is copper. The above-mentioned nickel-free high elastic modulus hydrogen sulfide corrosion-resistant silver seedling alloy and its technology for jewelry include the following steps: adding the above proportioned raw materials into an induction furnace under an argon environment, and using a graphite crucible; melting at 1400 10 minutes at high temperature, and evenly stirred by high-frequency induction furnace electromagnetically; after stirring evenly, heat at 1400°C 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. The obtained ingot is rolled at room temperature, and the amount of rolling in each pass is ...

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Abstract

The invention discloses a Miao silver alloy used for nickel-free high-elasticity-modulus jewelry resistant to hydrogen sulfide corrosion and a process of the Miao silver alloy. The alloy comprises 0.3wt%-0.5 wt% of B, 2.0 wt%-3.0 wt% of Mg, 0.8 wt%-1.0 wt% of Ge, 1.5 wt%-1.8 wt% of In, 1.2 wt%-1.5 wt% of Y, 4.0 wt%-6.0 wt% of Fe, 40.0 wt%-50.0 wt% of Ag and the balance copper. The material provides a solution of material science for the Miao silver alloy in China, Miao silver products are environment-friendly and do not cause allergies after being machined, and the alloy has excellent corrosion resistance. By means of implementation and industrialization of the material, the product renewal requirement of the jewelry industry in China and the requirement of industry upgrading can be effectively promoted.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a silver alloy. Background technique [0002] The price of sterling silver is relatively low among precious metals. Because of its good ductility and soft texture, it can be processed into various forms. It has been loved by people since ancient times and is widely used in the manufacture of jewelry, tableware and various decorations. Sterling silver is soft, although it is convenient for the processing of traditional jewelry, it is not conducive to inlaying gemstones. Moreover, due to the low hardness, after the jewelry is worn, small scratches will be produced on the surface, which will reduce the surface gloss and affect the appearance. In order to overcome these shortcomings of pure silver, people add various alloying elements to silver to improve the mechanical and other properties of silver, which forms a silver alloy. [0003] Miao silver is a kind of silver alloy unique ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C5/08C22C9/00C22C30/02C22C1/02C22F1/08C22F1/14C22F1/16
CPCC22C5/08C22C1/02C22C9/00C22C30/02C22F1/08C22F1/14C22F1/16
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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