Yellow 958 silver alloy with high hardness and wear-resisting performance and process of yellow 958 silver alloy

Abstract

The invention discloses a yellow 958 silver alloy with high hardness and wear-resisting performance and a process of the yellow 958 silver alloy. Components of the alloy comprise, by weight percent, 0.4%-0.5% of Be, 0.6%-0.8% of Sr, 0.2%-0.4% of Ta, 0.3%-0.5% of W, 1.4%-1.6% of Zn, 0.5%-0.8% of Ge, 95.0%-96.0% of Ag and the balance copper. A new material with the yellow appearance is provided forthe 958 silver alloy for domestic jewelry, and the material has the excellent wear-resisting character. By means of implementation and industrialization of the material, the requirements of product updating and industry upgrading of the domestic jewelry industry can be effectively pushed, the industry problems are solved, and meanwhile plenteous economic gains and social benefits can be obtained.

Description

technical field

[0001] The invention relates to the technical field of alloys, in particular to a silver alloy. Background technique

[0002] Silver has a white luster and is located between gold and copper on the periodic table. Although it is chemically less inert among noble metals, it is far more stable than copper and aluminum, and will not oxidize even when heated in air. The earliest uses of silver were decorations and currency, and later as tableware. With the development of industry, other uses have gradually been developed, such as: electrical contactors, brazing alloys, catalysts and photographic materials. China is a multi-ethnic country, and there has always been a large market for ethnic minority silver jewelry. With the improvement of people's living standards, silver jewelry and silverware will enter the general family more and faster.

[0003] Because silver is cheap compared to gold, its soft texture can be processed into various jewelry accessories, ta...

Examples

Embodiment 1

[0018] Yellow 958 silver alloy with high hardness and wear resistance and its process. In terms of weight percentage, the composition of the alloy is Be: 0.4wt.%, Sr: 0.6wt.%, Ta: 0.2wt.%, W: 0.3wt.%, Zn: 1.4wt.%, Ge: 0.5wt.% , Ag: 95.0wt.%, the balance is copper. The above-mentioned yellow 958 silver alloy with high hardness and wear resistance and its process include the following steps: adding the raw materials in the above ratio into an induction furnace under an argon atmosphere, and using a graphite crucible; heat preservation at 1200 degrees during melting 10 minutes, rely on high-frequency induction furnace to stir evenly; 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, the intermediate annealing temperature is ...

Embodiment 2

[0021] Yellow 958 silver alloy with high hardness and wear resistance and its process. In terms of weight percentage, the composition of the alloy is Be: 0.5wt.%, Sr: 0.8wt.%, Ta: 0.4wt.%, W: 0.5wt.%, Zn: 1.6wt.%, Ge: 0.8wt.% , Ag: 96.0wt.%, the balance is copper. The above-mentioned yellow 958 silver alloy with high hardness and wear resistance and its process include the following steps: adding the raw materials in the above ratio into an induction furnace under an argon atmosphere, and using a graphite crucible; heat preservation at 1200 degrees during melting 10 minutes, rely on high-frequency induction furnace to stir evenly; 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, the intermediate annealing temperature is ...

Embodiment 3

[0024] Yellow 958 silver alloy with high hardness and wear resistance and its process. In terms of weight percentage, the composition of the alloy is Be: 0.4wt.%, Sr: 0.7wt.%, Ta: 0.3wt.%, W: 0.4wt.%, Zn: 1.5wt.%, Ge: 0.6wt.% , Ag: 95.0wt.%, the balance is copper. The above-mentioned yellow 958 silver alloy with high hardness and wear resistance and its process include the following steps: adding the raw materials in the above ratio into an induction furnace under an argon atmosphere, and using a graphite crucible; heat preservation at 1200 degrees during melting 10 minutes, rely on high-frequency induction furnace to stir evenly; 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, the intermediate annealing temperature is ...

technical field

[0001] The invention relates to the technical field of alloys, in particular to a silver alloy. Background technique

[0002] Silver has a white luster and is located between gold and copper on the periodic table. Although it is chemically less inert among noble metals, it is far more stable than copper and aluminum, and will not oxidize even when heated in air. The earliest uses of silver were decorations and currency, and later as tableware. With the development of industry, other uses have gradually been developed, such as: electrical contactors, brazing alloys, catalysts and photographic materials. China is a multi-ethnic country, and there has always been a large market for ethnic minority silver jewelry. With the improvement of people's living standards, silver jewelry and silverware will enter the general family more and faster.

[0003] Because silver is cheap compared to gold, its soft texture can be processed into various jewelry accessories, ta...

Examples

Embodiment 1

[0018] Yellow 958 silver alloy with high hardness and wear resistance and its process. In terms of weight percentage, the composition of the alloy is Be: 0.4wt.%, Sr: 0.6wt.%, Ta: 0.2wt.%, W: 0.3wt.%, Zn: 1.4wt.%, Ge: 0.5wt.% , Ag: 95.0wt.%, the balance is copper. The above-mentioned yellow 958 silver alloy with high hardness and wear resistance and its process include the following steps: adding the raw materials in the above ratio into an induction furnace under an argon atmosphere, and using a graphite crucible; heat preservation at 1200 degrees during melting 10 minutes, rely on high-frequency induction furnace to stir evenly; 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, the intermediate annealing temperature is ...

Embodiment 2

[0021] Yellow 958 silver alloy with high hardness and wear resistance and its process. In terms of weight percentage, the composition of the alloy is Be: 0.5wt.%, Sr: 0.8wt.%, Ta: 0.4wt.%, W: 0.5wt.%, Zn: 1.6wt.%, Ge: 0.8wt.% , Ag: 96.0wt.%, the balance is copper. The above-mentioned yellow 958 silver alloy with high hardness and wear resistance and its process include the following steps: adding the raw materials in the above ratio into an induction furnace under an argon atmosphere, and using a graphite crucible; heat preservation at 1200 degrees during melting 10 minutes, rely on high-frequency induction furnace to stir evenly; 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, the intermediate annealing temperature is ...

Embodiment 3

[0024] Yellow 958 silver alloy with high hardness and wear resistance and its process. In terms of weight percentage, the composition of the alloy is Be: 0.4wt.%, Sr: 0.7wt.%, Ta: 0.3wt.%, W: 0.4wt.%, Zn: 1.5wt.%, Ge: 0.6wt.% , Ag: 95.0wt.%, the balance is copper. The above-mentioned yellow 958 silver alloy with high hardness and wear resistance and its process include the following steps: adding the raw materials in the above ratio into an induction furnace under an argon atmosphere, and using a graphite crucible; heat preservation at 1200 degrees during melting 10 minutes, rely on high-frequency induction furnace to stir evenly; 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, the intermediate annealing temperature is ...