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Silver alloy and manufacturing technology and application thereof

A manufacturing process and silver alloy technology, applied in silver alloy and its manufacturing process and application fields, can solve the problems of toughness and stable surface properties at the same time, and achieve good anti-tarnish performance, stable surface properties, and good processing performance.

Active Publication Date: 2018-06-19
依波精品(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems that current silver alloy watchband materials cannot simultaneously satisfy toughness, age hardenability, and stable surface properties during processing, the present invention provides a silver alloy and its manufacturing process

Method used

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  • Silver alloy and manufacturing technology and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A silver alloy, according to 100% by weight, said silver alloy contains the following components:

[0060] Silver 92.5%;

[0061] Copper 6.15%

[0062] Silicon 0.1%;

[0063] Zinc 0.5%;

[0064] Titanium 0.2%;

[0065] Aluminum 0.1%;

[0066] Tin 0.05%;

[0067] Indium 0.2%;

[0068] Yttrium 0.2%.

[0069] The manufacturing process of described silver alloy comprises the steps:

[0070] 1) each metal element of the silver alloy component provided by embodiment 1 is mixed until uniform;

[0071] 2) At a vacuum of 10 -1 High-frequency vacuum melting is carried out in a Pa vacuum induction melting furnace with a melting temperature of 900°C. After all the components are melted, high-purity argon is introduced into it as a protective atmosphere and cast into silver alloy strips;

[0072] 3) placing the silver alloy strip in an environment of 760° C. for homogenization heat treatment for 9 hours, and then cold pressing at room temperature to form a silver alloy bil...

Embodiment 2

[0077] A silver alloy, according to 100% by weight, said silver alloy contains the following components:

[0078] Silver 92.5%;

[0079] Copper 6.9%

[0080] Silicon 0.1%;

[0081] Zinc 0.1%;

[0082] Titanium 0.02%;

[0083] Aluminum 0.1%;

[0084] Tin 0.05%;

[0085] Germanium 0.2%;

[0086] Yttrium 0.03%.

[0087] The manufacturing process of described silver alloy comprises the steps:

[0088] 1) each metal element of the silver alloy component that embodiment 2 provides is mixed to uniform;

[0089] 2) At a vacuum of 10 -1 High-frequency vacuum melting is carried out in a vacuum induction melting furnace in Pa, the melting temperature is 1050°C, after all the components are melted, high-purity argon is introduced into it as a protective atmosphere, and cast into silver alloy strips;

[0090] 3) placing the silver alloy strip in an environment of 630° C. for homogenization heat treatment for 7 hours, and then cold pressing at room temperature to form a silver all...

Embodiment 3

[0095] A silver alloy, according to 100% by weight, said silver alloy contains the following components:

[0096] Silver 92.5%;

[0097] Copper 5.0%

[0098] Silicon 0.5%;

[0099] Zinc 0.5%;

[0100] Titanium 0.2%;

[0101] Aluminum 0.1%;

[0102] Tin 0.05%;

[0103] Indium 0.65%;

[0104] Niobium 0.5%.

[0105] The manufacturing process of described silver alloy comprises the steps:

[0106] 1) each metal element of the silver alloy component provided by embodiment 3 is mixed until uniform;

[0107] 2) At a vacuum of 10 -1 High-frequency vacuum melting is carried out in a Pa vacuum induction melting furnace with a melting temperature of 1000°C. After all the components are melted, high-purity argon is introduced into it as a protective atmosphere, and cast into silver alloy strips;

[0108] 3) placing the silver alloy strip in an environment of 800°C for homogenization heat treatment for 5 hours, and then cold pressing at room temperature to form a silver alloy bil...

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Abstract

The invention belongs to the technical field of silver alloy and specifically discloses a silver alloy and a manufacturing technology thereof. The silver alloy comprises the following components in percentage by weight: 92.5% of silver, 0.1-7.0% of copper, 0.1-1.0% of silicon, 0.1-1.0% of zinc, 0.01-0.5% of titanium, and 0.1-0.3% of aluminum. The preparation technology comprises the following steps: mixing the components of the silver alloy to obtain a mixture; smelting the mixture in a vacuum condition to obtain melt; under the protection of an inert atmosphere, pouring the melt into an alloysheet ingot; and sequentially performing homogenization heat treatment, re-annealing treatment and hardening heat treatment on the alloy sheet ingot, to obtain the silver alloy. The silver alloy disclosed by the invention is at least twice stronger than sterling silver in the ability of resisting vulcanization blackening, and has relatively strong as-cast hardness and high-temperature oxidation resistance and high processability; and moreover, the hardness reaches 150HV or above and reaches the hardness of stainless steel.

Description

technical field [0001] The invention belongs to the technical field of silver alloys, and in particular relates to a silver alloy and its manufacturing process and application. Background technique [0002] Silver has an attractive white luster. Because of its beautiful color, high chemical stability and ornamental value, it is widely used as jewelry, decorations, silverware and tableware. Pure silver with a silver content of not less than 99.5% has good anti-tarnish ability, but pure silver is too soft, the hardness after annealing is only about HV30, and the tensile strength is only 15km / mm 2 , it is difficult to meet the requirements of various aspects. Therefore, other elements are often added to silver to improve hardness. At present, the most common silver alloy for jewelry and utensils is 925 silver, also known as Sterling silver (English name: Sterling Silver), Sterling silver is silver-copper with a silver content of 92.5% and a copper content of 7.5%. alloy, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C5/08C22C5/06C22F1/14
CPCC22C5/06C22C5/08C22F1/14
Inventor 邬治平钟飞杨丽
Owner 依波精品(深圳)有限公司
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