JP2004292919A - Silver alloy - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new silver alloy which is provided with action effect that the purpose of oxidation prevention and the purpose of health maintenance are attained in a produced silver product. <P>SOLUTION: The silver alloy is obtained by adding germanium to pure silver. Also cadmium can be added for imparting viscosity to the silver alloy. As for the blending ratio, about 5 to 10% germanium is added to 95 to 90% pure silver. When cadmium is blended, the blending is performed in such a manner that 5 to 9% germanium and 1 to 2% cadmium are added to 94 to 90% pure silver. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a silver alloy for producing various silver products such as rings, bracelets, pendants, bells, tableware and the like.
[0002]
[Prior art]
Heretofore, silver alloys for producing the above-mentioned silver products usually include a required amount of copper mixed with pure silver. That is, since pure silver has the property of being brittle, it is alloyed with copper to increase its rigidity. In general, the mixture ratio of silver to copper is a mixture ratio of 95% silver and 5% copper, which is called 950 silver, or a mixture ratio of 92.5% silver and 7.5% copper. What is referred to as 925 silver, and what is referred to as 900 silver with a mixture ratio of 90% silver and 10% copper, is widely used. When the mixing ratio of copper is increased, the hardness is increased.
[0003]
By the way, the surface of a silver product made of a silver alloy as described above may become black when stored for a long period of time. This is because silver sulfide is formed by sulfurization instead of oxidation as observed in iron rust. Originally, silver is not affected by dry or humid air at room temperature.However, in cities with high air pollution, moisture adhering to the surface of silver products reacts with hydrogen sulfide or sulfur dioxide gas in the atmosphere. This causes sulfuration.
[0004]
As a means for preventing the sulfuration that causes the discoloration as described above, there is a method in which an alloy film containing gold in a range that does not cause gold coloring is formed in silver on the surface of a silver product. (For example, see Patent Document 1)
[0005]
[Patent Document 1]
JP 07-197291 A
[Problems to be solved by the invention]
With the conventional means as described above, not only is it expensive to use “gold”, but it is also applied to the product after it has been formed into the required shape, so the processing is extremely complicated As a result, it has become a significant obstacle to the rationalization of the manufacturing process.
[0007]
The present invention solves such a conventional problem, and exhibits strong resistance to sulfuration as silver bullion itself, and wears silver products such as rings, bracelets, and pendants which are in contact with the skin of the user. It is an object of the present invention to provide a novel silver alloy having an effect of achieving the health insurance purpose for the elderly.
[0008]
[Means for Solving the Problems]
The present invention relates to a silver alloy obtained by adding germanium to pure silver. Cadmium can be added to impart viscosity to the silver alloy. In addition, about 5% to 10% of germanium is added to 95% to 90% of pure silver. When cadmium is compounded, germanium is added in an amount of 5% to 9% and cadmium is added in an amount of 1% to 2% with respect to 94% to 90% of pure silver.
[0009]
The present invention has been made to solve the conventional problems and to provide a novel silver alloy that achieves the health insurance purpose based on the above-described structure.
[0010]
[Action]
The silver alloy according to the present invention is used as a silver alloy for manufacturing various silver products such as rings, bracelets, pendants, bells, tableware, etc., just like ordinary silver alloys.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
The gist of the present invention is a silver alloy obtained by adding germanium to pure silver. The reason why germanium was used in the present invention is that it was used as an additive to a silver alloy, as described below, while exhibiting the effect of preventing oxidation, which is the cause of blackening, and at the same time, expecting a healthy effect. It is a feature. It is preferable to add cadmium to impart viscosity.
Preferred examples of the above-described pure silver, germanium, and cadmium are as follows.
Sterling silver 95% to 90%
Germanium 4%-9%
Cadmium 1% to 2%
[0013]
By increasing the amount of germanium added, the hardness of the silver alloy can be increased. Therefore, when used for jewelry production, pure silver is about 95%, but when used for casting (for casting), pure silver usage fee is charged. It is preferable to be about 92.5% or about 90%. Also, in the case of manufacturing accessories such as broaches and rings, about 92.5% of the pure silver fee is suitable for hardness. In the case of products such as tableware and bells, since a certain degree of hardness is required, it is desirable that the usage fee of pure silver be about 90%.
[0014]
The above-mentioned germanium was experimentally confirmed to be added to pure silver to increase the hardness of the silver alloy in the same manner as copper, and at the same time to function as an anti-sulfurizing agent. And it was also confirmed that the alloy hardness was increased in proportion to the increase in the amount of germanium added. Based on this, in the present invention, germanium is used as an additional metal instead of conventional copper.
[0015]
When pure silver and germanium are used alone, the viscosity is insufficient, and there may be a difficulty in molding a target product. Therefore, it is preferable to add cadmium in order to make the silver alloy itself as a metal material sticky.
[0016]
By the way, germanium is mainly used for organic germanium. As a result, the organic germanium functions as an anti-sulfurizing agent, and acts to prevent water adhering to the surface of the silver product from reacting with hydrogen sulfide or sulfur dioxide in the atmosphere to form sulfur. Present.
[0017]
Germanium is well known as a component contained in hot springs. Rocks or fine-grained particles before melting into the hot spring have the same effect as hot springs when they come into contact with the human skin, so they can alleviate pain such as stiff shoulders, back pain, neuralgia, purify blood, The activation of the cells and the warming action based on the far-infrared action work to exert the action of eliminating coldness, the action of improving natural healing power, and the action of suppressing accumulation of fatigue substances.
[0018]
The silver alloy according to the present invention is used as a silver alloy for manufacturing various silver products such as rings, bracelets, pendants, bells, tableware, etc., just like ordinary silver alloys. And it is preferable to adjust the compounding ratio of germanium according to the production purpose.
[0019]
【The invention's effect】
According to the present invention, since germanium is added to pure silver, that is, germanium is added to pure silver, the sulfuration on the silver surface is prevented from occurring based on the intrinsic properties of the germanium. Therefore, it is possible to avoid the occurrence of a situation called black discoloration due to the moisture adhering to the surface of the silver product reacting with hydrogen sulfide or sulfur dioxide gas in the atmosphere to cause sulfuration.
At the same time, when a product that comes into contact with the skin of the user, such as a ring, is manufactured using the silver bullion according to the present invention, the germanium exerts a health-preserving effect, that is, enriches oxygen in the human body and causes harmful toxins from the body. And waste products are excreted and excreted, and based on the activation of metabolism, various organs of the body work actively to normalize the functions, thereby achieving the effect of eliminating the state of oxygen deficiency.
Further, when a bell is used for a temple, a Buddhist altar, or the like using the silver alloy according to the present invention, the tone of the bell is remarkably improved.
[0020]
According to the present invention, a silver alloy to which viscosity is imparted can be obtained by adding cadmium. Therefore, when the viscosity of the silver alloy is required in the production of the target silver product, it can be dealt with.
[0021]
According to the present invention, there is provided a constitution as described in claim 3 or 4, that is, about 5% to 10% of germanium is added to 95% to 90% of pure silver, or 94% to 90% of pure silver is added. By adding 5% to 9% of germanium and 1% to 2% of cadmium with respect to 90%, to obtain a silver alloy having optimal hardness or hardness and viscosity in the production of the target silver product. Can be done.

Claims (4)

A silver alloy made by adding germanium to pure silver. The silver alloy according to claim 1, wherein cadmium is added for imparting viscosity. 2. The silver alloy according to claim 1, wherein 5% to 10% of germanium is added to 95% to 90% of pure silver. 3. The silver alloy according to claim 2, wherein 5% to 9% of germanium and 1% to 2% of cadmium are added to 94% to 90% of pure silver.