CN114351002A - High-hardness high-purity gold jewelry material and preparation method thereof - Google Patents
High-hardness high-purity gold jewelry material and preparation method thereof Download PDFInfo
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- CN114351002A CN114351002A CN202210025722.7A CN202210025722A CN114351002A CN 114351002 A CN114351002 A CN 114351002A CN 202210025722 A CN202210025722 A CN 202210025722A CN 114351002 A CN114351002 A CN 114351002A
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- 239000010931 gold Substances 0.000 title claims abstract description 54
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 46
- 239000010929 jewellery material Substances 0.000 title claims abstract description 42
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000005096 rolling process Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- 229910002804 graphite Inorganic materials 0.000 claims description 20
- 239000010439 graphite Substances 0.000 claims description 20
- 239000004615 ingredient Substances 0.000 claims description 13
- 230000006698 induction Effects 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 238000005303 weighing Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 6
- 238000003723 Smelting Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005323 electroforming Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The invention discloses a high-hardness and high-purity gold jewelry material and a preparation method thereof, wherein the gold jewelry material is prepared from the following raw materials in percentage by mass: 0.02-0.05% of Ge, 0.003-0.01% of Ir and the balance of Au; the jewelry material can be processed and manufactured into various styles of jewelry by adopting traditional processes such as smelting, rolling, drawing and the like, has simple process, high efficiency, environmental protection and low manufacturing cost, and can well meet the requirement of the market on high-hardness and high-purity gold jewelry.
Description
Technical Field
The invention belongs to the field of jewelry materials, and particularly relates to a high-hardness and high-purity gold jewelry material and a preparation method thereof.
Background
Pure gold has a Vickers hardness of 40-45, is too soft, is not wear-resistant and easy to change, and cannot be processed into various styles of jewelry. At present, the electroforming method is adopted to improve the hardness of pure gold so as to process jewelry with larger size, but the method has low efficiency, is not environment-friendly and has high cost, and can not process jewelry such as necklaces.
Disclosure of Invention
The invention provides a high-hardness and high-purity gold jewelry material, which solves the problems in the prior art.
The scheme of the invention is as follows:
a high-hardness high-purity gold jewelry material is prepared from the following raw materials in percentage by mass: 0.02-0.05% of Ge, 0.003-0.01% of Ir and the balance of Au.
As an improvement on the technical scheme, Si accounting for 0-0.03 percent of the mass of the gold jewelry material is added into the gold jewelry material.
As a preferable technical scheme, the purities of Ge and Au are both 99.99%, and the purity of Ir is 99.95%;
the purity of the gold jewelry material is more than or equal to 99.9 percent.
The invention also provides a method for preparing the high-hardness and high-purity gold jewelry material, which comprises the following steps:
1) weighing 0.02-0.05% of Ge, 0.003-0.01% of Ir and the balance of Au according to the mass percentage, and mixing to obtain an alloy ingredient;
2) the alloy is mixed in a graphite crucible to be smelted in a high-level induction furnace and cast in a graphite mould to be made into a flat ingot or a round ingot, and the high-hardness and high-purity gold jewelry material is obtained.
As an improvement to the technical scheme, Si accounting for 0-0.03 percent of the mass of the alloy ingredients is added into the step 1).
Rolling the flat ingot or the round ingot prepared in the step 3) into a sheet with required specification or rolling and drawing into a wire with required specification according to the jewelry style.
The purity of the wire rolled into the required specification sheet or rolled and drawn into the required specification according to the jewelry style is more than or equal to 99.9 percent.
Due to the adoption of the technical scheme, the high-hardness and high-purity gold jewelry material and the preparation method thereof are prepared from the following raw materials in percentage by mass: 0.02-0.05% of Ge, 0.003-0.01% of Ir and the balance of Au; the jewelry material can be processed and manufactured into various styles of jewelry by adopting traditional processes such as smelting, rolling, drawing and the like, has simple process, high efficiency, environmental protection and low manufacturing cost, and can well meet the requirement of the market on high-hardness and high-purity gold jewelry.
Detailed Description
In order to make up for the defects, the invention provides a high-hardness and high-purity gold jewelry material and a preparation method thereof so as to solve the problems in the background technology.
A high-hardness high-purity gold jewelry material is prepared from the following raw materials in percentage by mass: 0.02-0.05% of Ge, 0.003-0.01% of Ir and the balance of Au.
Adding Si which accounts for 0-0.03 percent of the mass of the gold jewelry material into the gold jewelry material.
The purities of Ge and Au are both 99.99%, and the purity of Ir is 99.95%;
the purity of the gold jewelry material is more than or equal to 99.9 percent.
A method for preparing the high-hardness high-purity gold jewelry material comprises the following steps:
1) weighing 0.02-0.05% of Ge, 0.003-0.01% of Ir and the balance of Au according to the mass percentage, and mixing to obtain an alloy ingredient;
2) the alloy is mixed in a graphite crucible to be smelted in a high-level induction furnace and cast in a graphite mould to be made into a flat ingot or a round ingot, and the high-hardness and high-purity gold jewelry material is obtained.
Adding Si accounting for 0-0.03 percent of the mass of the alloy ingredients into the step 1).
Rolling the flat ingot or the round ingot prepared in the step 3) into a sheet with required specification or rolling and drawing into a wire with required specification according to the jewelry style.
The purity of the wire rolled into the required specification sheet or rolled and drawn into the required specification according to the jewelry style is more than or equal to 99.9 percent.
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
Weigh 99.99% Au: 100 g, 99.99% Ge: 0.035 g, 99.95 percent and 0.005 g of Ir, and the ingredients are put into a graphite crucible to be smelted in a medium frequency induction furnace and cast in a graphite die to prepare an ingot with the diameter of 15mm, and then the ingot is rolled and drawn into a wire with the diameter of 0.25 mm. The purity of the jewelry material is 99.95 percent, and the Vickers hardness is 120.
Example 2
Weigh 99.99% Au: 100 g, 99.99% Ge: 0.045 g, 99.99% Si:0.005 g, charging the ingredients into a graphite crucible, smelting in a medium frequency induction furnace, casting in a graphite mold to prepare a 15 x 15(mm) square ingot, and then rolling into a 0.5mm sheet. The purity of the jewelry material is 99.94 percent, and the Vickers hardness is 120.
Example 3
Weigh 99.99% Au: 100 g, 99.99% Ge: 0.045 g, 99.99 percent, 0.005 g of Si and 0.01 g of 99.95 percent Ir, and the ingredients are filled in a graphite crucible to be smelted in a medium-frequency induction furnace and cast in a graphite die to prepare an ingot with the diameter of 15mm, and then the ingot is rolled and drawn into a wire with the diameter of 0.2 mm. The purity of the jewelry material is 99.94 percent, and the Vickers hardness is 125.
Example 4
Weigh 99.99% Au: 100 g, 99.99% Ge: 0.06 g, 0.01 g of 99.99 percent Si, 99.95 percent and 0.01 g of Ir, and the ingredients are put into a graphite crucible to be smelted in a medium frequency induction furnace and cast in a graphite die to prepare an ingot with the diameter of 15mm, and then the ingot is rolled and drawn into a wire with the diameter of 0.2 mm. The purity of the jewelry material is 99.92 percent, and the Vickers hardness is 135.
Example 5
Weigh 99.99% Au: 299.931 g, 99.99% Ge: 0.06 g, 99.95 percent and 0.001 g of Ir, and the ingredients are put in a graphite crucible to be smelted in a medium-frequency induction furnace and cast in a graphite die to prepare an ingot with the diameter of 15mm, and then the ingot is rolled and drawn into a wire with the diameter of 0.2 mm. The purity of the jewelry material is 99.91 percent, and the Vickers hardness is 140.
Example 6
Weigh 99.99% Au: 200 g, 99.99% Ge: 0.08 g, 99.95 percent and 0.005 g of Ir, and the ingredients are put into a graphite crucible to be smelted in a medium-frequency induction furnace and cast in a graphite die to prepare an ingot with the diameter of 15mm, and then the ingot is rolled and drawn into a wire with the diameter of 0.2 mm. The purity of the jewelry material is 99.92 percent, and the Vickers hardness is 135.
Example 7
Weigh 99.99% Au: 99.94 g, 99.99% Ge: 0.05 g, 99.95 percent and 0.01 g of Ir, and the ingredients are put into a graphite crucible to be smelted in a medium-frequency induction furnace and cast in a graphite die to prepare an ingot with the diameter of 15mm, and then the ingot is rolled and drawn into a wire with the diameter of 0.2 mm. The purity of the jewelry material is 99.93 percent, and the Vickers hardness is 130.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The high-hardness and high-purity gold jewelry material is characterized by being prepared from the following raw materials in percentage by mass: 0.02-0.05% of Ge, 0.003-0.01% of Ir and the balance of Au.
2. The high-hardness high-purity gold jewelry material as claimed in claim 1, wherein: adding Si which accounts for 0-0.03 percent of the mass of the gold jewelry material into the gold jewelry material.
3. The high-hardness high-purity gold jewelry material as claimed in claim 1 or 2, wherein: the purities of Ge and Au are both 99.99%, and the purity of Ir is 99.95%.
4. The high-hardness high-purity gold jewelry material as claimed in claim 1 or 2, wherein: the purity of the gold jewelry material is more than or equal to 99.9 percent.
5. A method for preparing the high-hardness high-purity gold jewelry material as claimed in any one of claims 1 to 4, which comprises the following steps:
1) weighing 0.02-0.05% of Ge, 0.003-0.01% of Ir and the balance of Au according to the mass percentage, and mixing to obtain an alloy ingredient;
2) the alloy is mixed in a graphite crucible to be smelted in a high-level induction furnace and cast in a graphite mould to be made into a flat ingot or a round ingot, and the high-hardness and high-purity gold jewelry material is obtained.
6. The method for preparing the high-hardness and high-purity gold jewelry material as claimed in claim 5, wherein the method comprises the following steps:
adding Si accounting for 0-0.03 percent of the mass of the alloy ingredients into the step 1).
7. The method for preparing the high-hardness and high-purity gold jewelry material as claimed in claim 5, wherein the method comprises the following steps: rolling the flat ingot or the round ingot prepared in the step 3) into a sheet with required specification or rolling and drawing into a wire with required specification according to the jewelry style.
8. The method for preparing the high-hardness and high-purity gold jewelry material as claimed in claim 7, wherein the method comprises the following steps: the purity of the wire rolled into the required specification sheet or rolled and drawn into the required specification according to the jewelry style is more than or equal to 99.9 percent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210025722.7A CN114351002B (en) | 2022-01-11 | 2022-01-11 | High-hardness high-purity gold jewelry material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210025722.7A CN114351002B (en) | 2022-01-11 | 2022-01-11 | High-hardness high-purity gold jewelry material and preparation method thereof |
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| CN114351002A true CN114351002A (en) | 2022-04-15 |
| CN114351002B CN114351002B (en) | 2023-11-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101810387A (en) * | 2009-12-11 | 2010-08-25 | 深圳市意地亚珠宝首饰设计有限公司 | Technical for manufacturing jewelry by using hard gold |
| JP2017122249A (en) * | 2016-01-05 | 2017-07-13 | 株式会社グローバルコーポレーション | Color gold alloy having enhanced processability and purity of 22 gold and manufacturing method therefor |
| CN107385266A (en) * | 2017-08-03 | 2017-11-24 | 深圳市金弘珠宝首饰有限公司 | High intensity pure gold material and preparation method thereof |
| CN110106385A (en) * | 2019-05-16 | 2019-08-09 | 杭州辰卓科技有限公司 | One kind having the corrosion-resistant billon of resistance to brittle failure of this spot effect 18K and its technique |
| EP3656245A1 (en) * | 2018-11-26 | 2020-05-27 | Richemont International S.A. | Item of jewellery or watch with gold alloy base comprising at least 990 per mille gold by weight |
-
2022
- 2022-01-11 CN CN202210025722.7A patent/CN114351002B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101810387A (en) * | 2009-12-11 | 2010-08-25 | 深圳市意地亚珠宝首饰设计有限公司 | Technical for manufacturing jewelry by using hard gold |
| JP2017122249A (en) * | 2016-01-05 | 2017-07-13 | 株式会社グローバルコーポレーション | Color gold alloy having enhanced processability and purity of 22 gold and manufacturing method therefor |
| CN107385266A (en) * | 2017-08-03 | 2017-11-24 | 深圳市金弘珠宝首饰有限公司 | High intensity pure gold material and preparation method thereof |
| EP3656245A1 (en) * | 2018-11-26 | 2020-05-27 | Richemont International S.A. | Item of jewellery or watch with gold alloy base comprising at least 990 per mille gold by weight |
| CN110106385A (en) * | 2019-05-16 | 2019-08-09 | 杭州辰卓科技有限公司 | One kind having the corrosion-resistant billon of resistance to brittle failure of this spot effect 18K and its technique |
Non-Patent Citations (3)
| Title |
|---|
| S.H.艾芙纳: "《物理冶金学导论》", 31 May 1982, 冶金工业出版社, pages: 540 * |
| 张永俐, 李关芳: "首饰用开金合金的研究与发展(1):彩色及白色开金合金", 贵金属, no. 01 * |
| 沙舒城: "《现代实用金融知识》", 31 January 2000, 经济管理出版社, pages: 59 * |
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| CN114351002B (en) | 2023-11-14 |
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