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Novel low-silver-content alloy with blue luster, corrosion resistance and color change resistance for Miao silver jewelry

A technology of corrosion resistance and silver content, applied in the field of alloys, can solve the problems of vulcanization blackening, lack of corrosion resistance, acceleration, etc., and achieve the effect of color and appearance repair, excellent casting performance, and avoiding dendrites

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

This type of alloy does not have sufficient corrosion resistance to discolor after use, or the vulcanization and blackening are accelerated due to wear and tear out of the base alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Miao silver jewelry is a new low-silver content alloy with blue luster and corrosion-resistant discoloration. In terms of weight percentage, the composition of the alloy is B:0.4wt.%, Li:1.8wt.%, Mo:0.4wt.%, W:0.3wt.%, Sc:1.2wt.%, Ni:4.0wt.% , Ag: 40.0wt.%, the balance is copper. The above-mentioned new low-silver content alloy with blue luster and corrosion resistance and discoloration for the above-mentioned Miao silver jewelry comprises the following steps: adding the raw materials in the above ratio into an induction furnace under an argon environment, and using a graphite crucible; melting at 1400 degrees Keep warm for 10 minutes, stir evenly with high-frequency induction furnace electromagnetically; after stirring evenly, keep warm at 1400 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. The obtained ingot is rolled at room temperature, and the amount of reduction in...

Embodiment 2

[0022] Miao silver jewelry is a new low-silver content alloy with blue luster and corrosion-resistant discoloration. In terms of weight percentage, the composition of the alloy is B:0.6wt.%, Li:2.5wt.%, Mo:0.6wt.%, W:0.5wt.%, Sc:1.5wt.%, Ni:6.0wt.% , Ag: 50.0wt.%, the balance is copper. The above-mentioned new low-silver content alloy with blue luster and corrosion resistance and discoloration for the above-mentioned Miao silver jewelry comprises the following steps: adding the raw materials in the above ratio into an induction furnace under an argon environment, and using a graphite crucible; melting at 1400 degrees Keep warm for 10 minutes, stir evenly with high-frequency induction furnace electromagnetically; after stirring evenly, keep warm at 1400 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. The obtained ingot is rolled at room temperature, and the amount of reduction in...

Embodiment 3

[0025] Miao silver jewelry is a new low-silver content alloy with blue luster and corrosion-resistant discoloration. In terms of weight percentage, the composition of the alloy is B:0.5wt.%, Li:1.9wt.%, Mo:0.5wt.%, W:0.4wt.%, Sc:1.4wt.%, Ni:4.5wt.% , Ag: 45.0wt.%, the balance is copper. The above-mentioned new low-silver content alloy with blue luster and corrosion resistance and discoloration for the above-mentioned Miao silver jewelry comprises the following steps: adding the raw materials in the above ratio into an induction furnace under an argon environment, and using a graphite crucible; melting at 1400 degrees Keep warm for 10 minutes, stir evenly with high-frequency induction furnace electromagnetically; after stirring evenly, keep warm at 1400 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. The obtained ingot is rolled at room temperature, and the amount of reduction in...

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PUM

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Abstract

The invention discloses a novel low-silver-content alloy with blue luster, corrosion resistance and color change resistance for Miao silver jewelry. The novel low-silver-content alloy comprises, by weight, 0.4%-0.6% of B, 1.8%-2.5% of Li, 0.4%-0.6% of Mo, 0.3%-0.5% of W, 1.2%-1.5% of Sc, 4.0%-6.0% of Ni, 40.0%-50.0% of Ag and the balance copper. The material supplies a materials science solution for a Miao silver alloy in China, therefore, a Miao silver product can have the blue luster after being machined, and the alloy has the excellent corrosion resistance and color change resistance. Through implementation and industrialization of the material, the product updating and industry upgrading requirements in the jewelry industry in China can be effectively met, and the plenteous economic gains and social benefits can be achieved while industry problems are solved.

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] Adding a very small amount of alloying elemen...

Claims

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Application Information

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IPC IPC(8): C22C30/02C22C5/08C22C9/00C22C1/02C22F1/08C22F1/14C23C8/12
CPCC22C30/02C22C1/02C22C5/08C22C9/00C22F1/08C22F1/14C23C8/12
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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