Silver alloy with hydrogen sulfide corrosion resistance and excellent die casting performance for jewelry

Abstract

The invention discloses a silver alloy with hydrogen sulfide corrosion resistance and excellent die casting performance for jewelry. The alloy comprises, by weight, 0.1%-0.2% of B, 1.2%-1.5% of Ca, 2.0%-3.0% of Al, 1.6%-1.8% of Ni, 3.0%-5.0% of In, 1.0%-1.2% of Ge, 1.5%-1.8% of Sn and the balance silver. According to the silver alloy, a material solution is provided for sulphide discoloration of the silver alloy on the current market. Not only is the production cost reduced, but also the relevant production technology and equipment requirements are simplified greatly. It can be estimated thatrich economic results and social benefits can be achieved through implementation and industrialization of the silver alloy.

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 metal with a very strong white luster. In English, silver is called Silver, which means white brilliance. Sterling silver has a soft texture and good ductility. It can be made into various ornaments through drawing, hammering and other processing techniques. It was an indispensable jewelry material in ancient times. The history of human use of silver can be traced back to about 3000 BC, and silver utensils were found in the Mesopotamia civilization in Southwest Asia. In nature, it seldom exists in the form of simple substance, and generally exists in the form of compound in deep veins, which is difficult to extract, so the discovery and utilization of silver is later than that of gold.

[0003] Because of its beauty and rarity, silver has become a symbol of wealth and status. Silver coins are an important currency in cir...

Examples

Embodiment 1

[0020] A silver alloy resistant to hydrogen sulfide corrosion and excellent die-casting properties for jewelry. In terms of weight percentage, the composition of the alloy is B: 0.1wt.%, Ca: 1.2wt.%, Al: 2.0wt.%, Ni: 1.6wt.%, In: 3.0wt.%, Ge: 1.0wt.%. , Sn: 1.5wt.%, the balance is silver. The above-mentioned a kind of silver alloy that is corrosion-resistant to hydrogen sulfide and has excellent die-casting performance for jewelry comprises the following steps: adding the above proportioned raw materials into an induction furnace under an argon environment, and adopting a graphite crucible; 10 minutes, rely on high-frequency induction furnace to stir evenly; after stirring evenly, keep warm at 1100 degrees for 1 minute and cast out of the furnace; alloy casting uses a steel mold with a diameter of 50-100mm, and uses water cooling to cool down. The ingot can be used as a casting raw material for casting in the subsequent process to prepare castings of complex shapes; the final...

Embodiment 2

[0023]A silver alloy resistant to hydrogen sulfide corrosion and excellent die-casting properties for jewelry. In terms of weight percentage, the composition of the alloy is B: 0.2wt.%, Ca: 1.5wt.%, Al: 3.0wt.%, Ni: 1.8wt.%, In: 5.0wt.%, Ge: 1.2wt.%. , Sn: 1.8wt.%, the balance is silver. The above-mentioned a kind of silver alloy that is corrosion-resistant to hydrogen sulfide and has excellent die-casting performance for jewelry comprises the following steps: adding the above proportioned raw materials into an induction furnace under an argon environment, and adopting a graphite crucible; 10 minutes, rely on high-frequency induction furnace to stir evenly; after stirring evenly, keep warm at 1100 degrees for 1 minute and cast out of the furnace; alloy casting uses a steel mold with a diameter of 50-100mm, and uses water cooling to cool down. The ingot can be used as a casting raw material for casting in the subsequent process to prepare castings of complex shapes; the final ...

Embodiment 3

[0026] A silver alloy resistant to hydrogen sulfide corrosion and excellent die-casting properties for jewelry. In terms of weight percentage, the composition of the alloy is B: 0.1wt.%, Ca: 1.4wt.%, Al: 2.5wt.%, Ni: 1.7wt.%, In: 3.2wt.%, Ge: 1.1wt.%. %, Sn: 1.6wt.%, the balance is silver. The above-mentioned a kind of silver alloy that is corrosion-resistant to hydrogen sulfide and has excellent die-casting performance for jewelry comprises the following steps: adding the above proportioned raw materials into an induction furnace under an argon environment, and adopting a graphite crucible; 10 minutes, rely on high-frequency induction furnace to stir evenly; after stirring evenly, keep warm at 1100 degrees for 1 minute and cast out of the furnace; alloy casting uses a steel mold with a diameter of 50-100mm, and uses water cooling to cool down. The ingot can be used as a casting raw material for casting in the subsequent process to prepare castings of complex shapes; the fina...

technical field

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

[0002] Silver is a metal with a very strong white luster. In English, silver is called Silver, which means white brilliance. Sterling silver has a soft texture and good ductility. It can be made into various ornaments through drawing, hammering and other processing techniques. It was an indispensable jewelry material in ancient times. The history of human use of silver can be traced back to about 3000 BC, and silver utensils were found in the Mesopotamia civilization in Southwest Asia. In nature, it seldom exists in the form of simple substance, and generally exists in the form of compound in deep veins, which is difficult to extract, so the discovery and utilization of silver is later than that of gold.

[0003] Because of its beauty and rarity, silver has become a symbol of wealth and status. Silver coins are an important currency in cir...

Examples

Embodiment 1

[0020] A silver alloy resistant to hydrogen sulfide corrosion and excellent die-casting properties for jewelry. In terms of weight percentage, the composition of the alloy is B: 0.1wt.%, Ca: 1.2wt.%, Al: 2.0wt.%, Ni: 1.6wt.%, In: 3.0wt.%, Ge: 1.0wt.%. , Sn: 1.5wt.%, the balance is silver. The above-mentioned a kind of silver alloy that is corrosion-resistant to hydrogen sulfide and has excellent die-casting performance for jewelry comprises the following steps: adding the above proportioned raw materials into an induction furnace under an argon environment, and adopting a graphite crucible; 10 minutes, rely on high-frequency induction furnace to stir evenly; after stirring evenly, keep warm at 1100 degrees for 1 minute and cast out of the furnace; alloy casting uses a steel mold with a diameter of 50-100mm, and uses water cooling to cool down. The ingot can be used as a casting raw material for casting in the subsequent process to prepare castings of complex shapes; the final...

Embodiment 2

[0023]A silver alloy resistant to hydrogen sulfide corrosion and excellent die-casting properties for jewelry. In terms of weight percentage, the composition of the alloy is B: 0.2wt.%, Ca: 1.5wt.%, Al: 3.0wt.%, Ni: 1.8wt.%, In: 5.0wt.%, Ge: 1.2wt.%. , Sn: 1.8wt.%, the balance is silver. The above-mentioned a kind of silver alloy that is corrosion-resistant to hydrogen sulfide and has excellent die-casting performance for jewelry comprises the following steps: adding the above proportioned raw materials into an induction furnace under an argon environment, and adopting a graphite crucible; 10 minutes, rely on high-frequency induction furnace to stir evenly; after stirring evenly, keep warm at 1100 degrees for 1 minute and cast out of the furnace; alloy casting uses a steel mold with a diameter of 50-100mm, and uses water cooling to cool down. The ingot can be used as a casting raw material for casting in the subsequent process to prepare castings of complex shapes; the final ...

Embodiment 3

[0026] A silver alloy resistant to hydrogen sulfide corrosion and excellent die-casting properties for jewelry. In terms of weight percentage, the composition of the alloy is B: 0.1wt.%, Ca: 1.4wt.%, Al: 2.5wt.%, Ni: 1.7wt.%, In: 3.2wt.%, Ge: 1.1wt.%. %, Sn: 1.6wt.%, the balance is silver. The above-mentioned a kind of silver alloy that is corrosion-resistant to hydrogen sulfide and has excellent die-casting performance for jewelry comprises the following steps: adding the above proportioned raw materials into an induction furnace under an argon environment, and adopting a graphite crucible; 10 minutes, rely on high-frequency induction furnace to stir evenly; after stirring evenly, keep warm at 1100 degrees for 1 minute and cast out of the furnace; alloy casting uses a steel mold with a diameter of 50-100mm, and uses water cooling to cool down. The ingot can be used as a casting raw material for casting in the subsequent process to prepare castings of complex shapes; the fina...