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A kind of patch alloy for anti-discoloration rose gold and its preparation method and application

An anti-tarnish and rose gold technology, applied in the field of metallurgy, can solve problems such as loss of rose gold luster, ineffective addition, color change of alloys, etc., and achieve the effect of excellent comprehensive performance, low cost, and good anti-tarnish performance

Active Publication Date: 2021-11-30
SHENZHEN YUEHAO JEWELRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Jewelry itself has high requirements on color, adding too much other anti-tarnish alloy elements will easily cause the color of the alloy to change, thus losing the color of rose gold, and adding too little will not work

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A jointing alloy for anti-tarnishing rose gold, which is composed of the following components in weight percentage: 0.2-4.0% of aluminum element, 0.05-2.0% of chromium element, 0.2-2.0% of silicon element, 0-0.4% of boron element and 0-0% of lithium element 0.4%, the balance is copper element. Wherein the weight percent content of boron element and lithium element cannot be 0 at the same time.

Embodiment 2

[0026] A jointing alloy for anti-tarnishing rose gold, which is composed of the following components in weight percentage: 0.2-4.0% of aluminum element, 0.05-2.0% of chromium element, 0.2-2.0% of silicon element, 0.05-2.0% of germanium element, 0-0% of boron element 0.4% and lithium element 0-0.4%, the balance is copper element. Wherein the weight percent content of boron element and lithium element cannot be 0 at the same time.

Embodiment 3

[0028] A filling alloy for anti-tarnishing rose gold, which is composed of the following components in weight percent: 4.0% of aluminum element, 0.05% of chromium element, 0.2% of silicon element, 0.05% of germanium element and 0.4% of boron element, and the balance is copper element.

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PUM

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Abstract

The invention provides a joint alloy for anti-tarnish rose gold, a preparation method and application thereof. The jointing alloy uses copper as the main element, and also includes aluminum, chromium and silicon elements for improving the anti-tarnish performance of the alloy, and boron and / or lithium elements for cleaning the alloy. When the joint alloy is applied, it is smelted with pure gold in a ratio of 1:3 to form an 18K rose gold alloy. The obtained gold alloy has excellent comprehensive properties, good anti-tarnish performance, processing performance and casting performance, and the surface of the casting is smooth and clean. The color is Rose Gold color. The alloy does not use precious metal elements for alloying, the cost is relatively low, and no harmful elements are used in the alloy, so it does not have harmful effects on the environment and operators.

Description

technical field [0001] The invention relates to the technical field of metallurgy, and relates to a multi-element rose gold alloy used in the manufacture of ornaments, in particular to a sealing alloy for anti-tarnish rose gold and its preparation method and application. Background technique [0002] Rose gold is an alloy of gold and copper, widely used in jewelry design and finishing due to its very fashionable and beautiful pink rose color. 18K rose gold is mainly pure gold + copper + a small amount of silver / zinc due to the color requirements. Due to the high copper content in rose gold, it is prone to corrosion, such as oxidation and blackening, or selective corrosion, which causes the copper in the alloy to corrode and lose and turn yellow. [0003] At present, the most common way to improve the anti-tarnish performance of jewelry precious metal materials is to add metal elements that are easy to passivate through alloying to form an anti-tarnish passivation layer on t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C9/01C22C1/03
CPCC22C1/03C22C9/00C22C9/01
Inventor 戴世畅
Owner SHENZHEN YUEHAO JEWELRY