Low-density corrosion-resistant purple low-silver alloy for Tibetan silver jewelries and process thereof

A corrosion-resistant, low-density technology, applied in the field of alloys, can solve the problems of lack of corrosion resistance, acceleration, vulcanization and blackening, and achieve the effects of excellent reuse performance, lower production costs, and strong resistance to inhalation and oxidation.

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

[0018] A low-density corrosion-resistant purple low-silver alloy for Tibetan silver jewelry and its technology. In terms of weight percentage, the composition of the alloy is Sr: 0.8wt.%, Mo: 0.3wt.%, W: 0.2wt.%, B: 0.2wt.%, Y: 0.6wt.%, Al: 20.0wt.% , Ag: 29.0wt.%, the balance is copper. The above-mentioned low-density corrosion-resistant purple low-silver alloy for Tibetan silver jewelry and its process includes 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 1200 degrees Keep warm for 10 minutes, stir evenly with 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 rol...

Embodiment 2

[0021] A low-density corrosion-resistant purple low-silver alloy for Tibetan silver jewelry and its technology. In terms of weight percentage, the composition of the alloy is Sr: 1.2wt.%, Mo: 0.5wt.%, W: 0.4wt.%, B: 0.3wt.%, Y: 0.8wt.%, Al: 25.0wt.% , Ag: 31.0wt.%, the balance is copper. The above-mentioned low-density corrosion-resistant purple low-silver alloy for Tibetan silver jewelry and its process includes 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 1200 degrees Keep warm for 10 minutes, stir evenly with 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 rol...

Embodiment 3

[0024] A low-density corrosion-resistant purple low-silver alloy for Tibetan silver jewelry and its technology. In terms of weight percentage, the composition of the alloy is Sr:0.9wt.%, Mo:0.4wt.%, W:0.3wt.%, B:0.2wt.%, Y:0.7wt.%, Al:24.0wt.% , Ag: 29.0wt.%, the balance is copper. The above-mentioned low-density corrosion-resistant purple low-silver alloy for Tibetan silver jewelry and its process includes 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 1200 degrees Keep warm for 10 minutes, stir evenly with 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,...

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Abstract

The invention discloses a low-density corrosion-resistant purple low-silver alloy for Tibetan silver jewelries and a process thereof. The low-density corrosion-resistant purple low-silver alloy comprises, by weight, 0.8-1.2% of Sr, 0.3-0.5% of Mo, 0.2-0.4% of W, 0.2-0.3% of B, 0.6-0.8% of Y, 20.0-25.0% of Al, 29.0-31.0% of Ag, and the balance copper. The material provides a high-weight selection scheme for the Chinese Tibetan silver alloy. The obtained alloy has the excellent purple impression and is extremely resistant to hydrogen sulfide corrosion. Implementation and industrialization of thematerial can effectively drive the requirements of product renewal and industry updating of the jewelry industry in China.

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 precious metal with a silver-white metal. Because silver itself is very soft, alloying elements are added to form a silver alloy with excellent mechanical properties. There are three main grades of traditional decorative silver: sterling silver, 958 silver and 925 silver, of which 958 silver and 925 silver are binary alloys composed of copper as an alloying element. The 958 silver alloy has a high silver content, with a silver content of 95.8 wt%, while the 925 silver content is 92.5 wt%. With the development of material science, the formulations of silver alloys are also constantly updated, and many types of 958 and 925 silver have appeared. Because of the differences in the types, contents, and processing methods of metal elements added, the chemical properties and mechanical properties of various silver alloys are diffe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/02C22C1/02C22F1/00C23C8/12
CPCC22C30/02C22C1/02C22C9/00C22F1/08C23C8/12
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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