CN111621663A - Gold alloy and preparation method thereof - Google Patents
Gold alloy and preparation method thereof Download PDFInfo
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- CN111621663A CN111621663A CN202010662558.1A CN202010662558A CN111621663A CN 111621663 A CN111621663 A CN 111621663A CN 202010662558 A CN202010662558 A CN 202010662558A CN 111621663 A CN111621663 A CN 111621663A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/02—Alloys based on gold
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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Abstract
The invention provides a gold alloy and a preparation method thereof, wherein the gold alloy comprises the following components in percentage by weight: 75 per mill of gold and 925 per mill of mixed joint coating metal, wherein the mixed joint coating noble metal comprises silver, copper and zinc. By adopting the technical scheme of the invention, the precious metals such as copper, zinc and the like are added into the alloy through proper proportion, the appearance of the original gold alloy is kept while the usage amount of gold is reduced, the ductility is ensured, the oxidation resistance and the hardness are improved, and the cost is reduced.
Description
Technical Field
The invention belongs to the technical field of precious metal processing, and particularly relates to a gold alloy and a preparation method thereof.
Background
The G18K gold alloy has been commonly used as a material for inlaid ornaments. The gold alloy G18K is prepared by adding noble metals such as silver, copper, zinc, palladium and the like into gold by 250 per thousand for mixing and repairing, wherein the gold content is 750 per thousand, the Vickers hardness GB/T4340.1-2009 is about 162.61HV1, the Rockwell hardness GB/T230.1-2018 is about 75.82HRF, the density GB/T1423-1996 is about 16.52G/cm3, and the gold alloy can meet the processing requirements of the mosaic ornaments. However, with the development of automation of metal processing, the G18K gold alloy has problems that the engraved surface is not bright enough and is easy to be ground, gold residue is left beside the engraved surface and the engraved surface is easy to be oxidized when the alloy is processed by a fine numerical control lathe, and the manufacturing cost is slightly high.
Disclosure of Invention
Aiming at the technical problems, the invention discloses a gold alloy and a preparation method thereof, which solve the problems that the carved surface of the existing gold alloy is not bright enough and is easy to grind when the existing gold alloy is processed by an automatic and fine numerical control lathe, gold paste is left beside the carved surface, the carved surface is easy to oxidize and the like, improve the hardness and the oxidation resistance of the gold alloy, and simultaneously reduce the preparation cost.
In contrast, the technical scheme adopted by the invention is as follows:
a gold alloy comprises the following components in percentage by weight: 75 per mill of gold and 925 per mill of mixed joint coating metal, wherein the mixed joint coating noble metal comprises silver, copper and zinc.
As a further improvement of the invention, the color of the gold alloy is changed by adjusting the proportion of silver, copper and zinc in 925 per mill of mixed repaired noble metal.
As a further improvement of the invention, the gold alloy comprises the following components in percentage by weight: 75 per mill of gold, 25 per mill to 694 per mill of silver, 155 per mill to 882 per mill of copper, and 18 per mill to 300 per mill of zinc.
As a further improvement of the invention, the gold alloy comprises the following components in percentage by weight: gold 75 per mill, silver 694 per mill, copper 155 per mill, and zinc 76 per mill.
As a further improvement of the invention, the gold alloy comprises the following components in percentage by weight: gold 75 per mill, silver 25 per mill, copper 600 per mill, zinc 300 per mill.
As a further improvement of the invention, the gold alloy comprises the following components in percentage by weight: gold 75%, silver 25%, copper 882% and zinc 18%.
As a further improvement of the invention, the gold alloy is prepared by the following steps: preparing materials, then placing gold, silver, copper and zinc into a gold melting pot, heating until the metals are completely melted, stirring while heating, uniformly mixing, pouring into a graphite tank, placing for 20-30 minutes at normal temperature, and then placing into a water tank to cool to normal temperature.
The invention also discloses a preparation method of the gold alloy, which comprises the following steps: preparing materials, then placing gold, silver, copper and zinc into a gold melting pot, heating until the metals are completely melted, stirring while heating, uniformly mixing, pouring into a graphite tank, placing for 20-30 minutes at normal temperature, and then placing into a water tank to cool to normal temperature.
As a further improvement of the invention, during material preparation, the prepared precious metals of gold, silver, copper and zinc are respectively put into a beaker filled with distilled water to be boiled for 10 to 30 minutes to remove surface impurities, and then the precious metals are taken out to be cleaned and dried.
As a further improvement of the invention, the graphite grooves are rectangular grooves.
Compared with the prior art, the invention has the beneficial effects that:
by adopting the technical scheme of the invention, the noble metals such as copper, zinc and the like are added into the alloy through proper proportion, the appearance of the original gold alloy is kept while the usage amount of gold is reduced, the ductility is ensured, and the oxidation resistance and the hardness are also improved. The gold content of the G1.8K gold alloy provided by the invention is 75 per mill, the Vickers hardness GB/T4340.1-2009 is about 178.55HV1, the Rockwell hardness GB/T230.1-2018 is about 83.23HRF, and the density GB/T1423-1996 is about 12.18g/cm3It can be seen that the hardness is higher than that of the G18K gold alloy, which improves the hardness of the gold alloy; in addition, the gold content in the gold alloy provided by the embodiment of the invention is 75 per mill, and compared with the gold alloy G18K, the gold alloy has lower preparation cost.
Detailed Description
The technical solutions in the examples of the present invention are further described in detail below. It is to be understood that the described embodiments are merely a subset of the embodiments of the invention and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1
The G1.8K gold alloy provided in this example was prepared by mixing 75% gold with 925% noble metals such as silver, copper, and zinc. The light white G1.8K gold alloy is obtained by adjusting the thousandth proportion of the silver, the copper and the zinc in 925 thousandth of the noble metal mixed patch in the noble metal mixed patch.
Preparation method of light white G1.8K gold alloy:
preparing materials: 75 per mill of gold, 694 per mill of silver, 155 per mill of copper and 76 per mill of zinc.
And respectively putting the precious metals such as gold, silver, copper, zinc and the like into a beaker filled with distilled water, boiling for 10-30 minutes to remove attached impurities such as oil stains and the like, then respectively taking out the precious metals without the attached impurities such as the oil stains and the like from the beaker, cleaning, drying, and putting into a clean appliance after nuclear weight is increased.
Preparation: putting 75 per mill gold, 694 per mill silver, 155 per mill copper and 76 per mill zinc in a gold melting pot, heating the gold melting pot until the metals are completely melted, stirring the metals in the pot by using a quartz rod while heating, pouring the metals into a graphite tank after ensuring that the metals in the pot are uniformly combined, placing the graphite tank for 20-30 minutes at normal temperature, and then placing the graphite tank in a water tank to cool the graphite tank to the normal temperature to obtain light white G1.8K gold alloy.
The gold alloy of this example is characterized by a pale white color. The gold content of the pale-white G1.8K gold alloy prepared by the embodiment is 75 per mill, the Vickers hardness GB/T4340.1-2009 is about 178.55HV1, the Rockwell hardness GB/T230.1-2018 is about 83.23HRF, and the density GB/T1423-1996 is about 12.18g/cm3The hardness is seen to be higher than that of the G18K gold alloy. In addition, the gold content of the gold alloy provided by the embodiment is 75 per mill, and compared with the gold alloy G18K, the gold alloy is lower in preparation cost.
Example 2
In the G1.8K gold alloy provided in this example, 75% gold and 925% noble metals such as silver, copper, zinc, etc. are mixed for repairing the opening. The yellow G1.8K gold alloy is obtained by adjusting the proportion of silver, copper and zinc in 925 per mill of the noble metal mixed patch to the inside of the noble metal mixed patch.
Preparation method of yellow G1.8K gold alloy:
preparing materials: 75 per mill of gold, 25 per mill of silver, 600 per mill of copper and 300 per mill of zinc are taken.
And respectively putting the precious metals such as gold, silver, copper, zinc and the like into a beaker filled with distilled water, boiling for 10-30 minutes to remove attached impurities such as oil stains and the like, then respectively taking out the precious metals without the attached impurities such as the oil stains and the like from the beaker, cleaning, drying, and putting into a clean appliance after nuclear weight is increased.
Preparation: putting 75% of gold, 25% of silver, 600% of copper and 300% of zinc in parts by weight into a gold melting pot, heating the gold melting pot until the metals are completely melted, stirring the metals in the pot by using a quartz rod while heating, pouring the metals into a graphite tank after ensuring that the metals in the pot are uniformly combined, placing the graphite tank for 20-30 minutes at normal temperature, and then placing the graphite tank into a water tank to cool the graphite tank to the normal temperature to obtain yellow G1.8K gold alloy.
The gold alloy of this example is characterized by a yellow color. The gold content of the yellow G1.8K gold alloy prepared by the embodiment is 75 per mill, the Vickers hardness GB/T4340.1-2009 is about 176.28HV1, the Rockwell hardness GB/T230.1-2018 is about 81.55HRF, and the density GB/T1423-1996 is about 11.54g/cm3It can be seen that the hardness is higher than that of the G18K gold alloy, thereby increasing the hardness of the gold alloy; in addition, the gold content in the gold alloy provided by the embodiment of the invention is 75 per mill, and compared with the gold alloy G18K, the gold alloy has lower preparation cost.
Example 3
In the G1.8K gold alloy provided in this example, 75% gold and 925% noble metals such as silver, copper, zinc, etc. are mixed for repairing the opening. The rose G1.8K gold alloy is obtained by adjusting the proportion of silver, copper and zinc in 925 per mill of the noble metal mixed patch to the per thousand of the noble metal mixed patch.
Preparation method of rose G1.8K gold alloy:
preparing materials: 75 per mill of gold, 25 per mill of silver, 882 per mill of copper and 18 per mill of zinc are taken.
And respectively putting the precious metals such as gold, silver, copper, zinc and the like into a beaker filled with distilled water, boiling for 10-30 minutes to remove attached impurities such as oil stains and the like, then respectively taking out the precious metals without the attached impurities such as the oil stains and the like from the beaker, cleaning, drying, and putting into a clean appliance after nuclear weight is increased.
Preparation: putting 75% of gold, 25% of silver, 882% of copper and 18% of zinc in parts by weight into a gold melting pot, heating the gold melting pot until the metals are completely melted, stirring the metals in the pot by using a quartz rod while heating, pouring the metals into a graphite tank after ensuring that the metals in the pot are uniformly combined, placing the graphite tank for 20-30 minutes at normal temperature, and then placing the graphite tank into a water tank to cool the graphite tank to the normal temperature to obtain the rose G1.8K gold alloy.
The gold alloy of this example is characterized by a rose-red color. The gold content of the rose G1.8K gold alloy prepared by the embodiment is 75 per mill, the Vickers hardness GB/T4340.1-2009 is about 177.25HV1, the Rockwell hardness GB/T230.1-2018 is about 82.26HRF, and the density GB/T1423-1996 is about 11.96g/cm3The hardness is seen to be higher than that of the G18K gold alloy. In addition, the gold content in the gold alloy provided by the embodiment of the invention is 75 per mill, and compared with the gold alloy G18K, the gold alloy has lower preparation cost.
The gold alloy provided by the embodiment of the invention is added with copper, so that the ductility of the gold alloy is enhanced, and the cracking of the gold alloy during cutting can be effectively prevented. The gold alloy provided by the embodiment of the invention can effectively solve the problem that the carved surface is easy to oxidize by adding zinc, so that the yellow G1.8K gold alloy and the rose G1.8K gold alloy can be kept from changing color due to oxidation without being electroplated, in a normal environment suitable for human life and without being influenced by external factors. G1.8K the gold content of gold alloy is 75 per mill, the preparation cost is only 1 per mill of that of the gold alloy G18K, and the problem of slightly higher preparation cost can be effectively solved.
It is understood that during the course of a particular implementation, other examples may be listed according to the G1.8K gold alloy provided in embodiments of the present invention and the temperature ranges during the fabrication process, and will not be described in detail herein.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A gold alloy is characterized by comprising the following components in percentage by weight: 75 per mill of gold and 925 per mill of mixed joint coating metal, wherein the mixed joint coating noble metal comprises silver, copper and zinc.
2. A gold alloy according to claim 1, characterized in that: the color of the gold alloy is changed by adjusting the proportion of silver, copper and zinc in 925 per mill of mixed repaired mouth noble metal.
3. A gold alloy according to claim 1, characterized in that it comprises the following components in weight percent: 75 per mill of gold, 25 per mill to 694 per mill of silver, 155 per mill to 882 per mill of copper, and 18 per mill to 300 per mill of zinc.
4. A gold alloy according to claim 3, characterized in that its components and their weight percentages are: gold 75 per mill, silver 694 per mill, copper 155 per mill, and zinc 76 per mill.
5. A gold alloy according to claim 3, characterized in that its components and their weight percentages are: gold 75 per mill, silver 25 per mill, copper 600 per mill, zinc 300 per mill.
6. A gold alloy according to claim 3, characterized in that its components and their weight percentages are: gold 75%, silver 25%, copper 882% and zinc 18%.
7. A gold alloy according to claim 1, characterized in that it is prepared by the following steps: preparing materials, then placing gold, silver, copper and zinc into a gold melting pot, heating until the metals are completely melted, stirring while heating, uniformly mixing, pouring into a graphite tank, placing for 20-30 minutes at normal temperature, and then placing into a water tank to cool to normal temperature.
8. A method for producing a gold alloy as set forth in any one of claims 1 to 6, characterized in that it comprises: preparing materials, then placing gold, silver, copper and zinc into a gold melting pot, heating until the metals are completely melted, stirring while heating, uniformly mixing, pouring into a graphite tank, placing for 20-30 minutes at normal temperature, and then placing into a water tank to cool to normal temperature.
9. A method of producing a gold alloy according to claim 8, wherein: when the materials are prepared, the precious metals of gold, silver, copper and zinc are respectively put into a beaker filled with distilled water to be boiled for 10 to 30 minutes to remove surface impurities, and then the precious metals are taken out to be cleaned and dried.
10. A method of producing a gold alloy according to claim 9, characterized in that: the graphite groove is a rectangular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010662558.1A CN111621663A (en) | 2020-07-10 | 2020-07-10 | Gold alloy and preparation method thereof |
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| CN202010662558.1A CN111621663A (en) | 2020-07-10 | 2020-07-10 | Gold alloy and preparation method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5045411A (en) * | 1990-01-10 | 1991-09-03 | P.M. Refining, Inc. | Alloy compositions |
| US20090185946A1 (en) * | 2008-01-14 | 2009-07-23 | Thielemann Richard J | Karatium white |
| US20090185945A1 (en) * | 2008-01-14 | 2009-07-23 | Thielemann Richard J | Karatium pink |
| US20100008818A1 (en) * | 2008-01-14 | 2010-01-14 | Thielemann Richard J | Karatium sterling |
| CN101921925A (en) * | 2010-09-08 | 2010-12-22 | 深圳市金福珠宝首饰有限公司 | Gold alloy and preparation method thereof |
| CN102776406A (en) * | 2012-07-31 | 2012-11-14 | 深圳市中汇贵金属有限公司 | Gold alloy and method for preparing same |
| CN106756197A (en) * | 2017-01-17 | 2017-05-31 | 深圳市诺珠宝有限公司 | A kind of billon and preparation method thereof |
| CH714879A2 (en) * | 2018-04-12 | 2019-10-15 | Fabrice Thueler | Copper-based alloy for goldsmith, jewelery, watchmaking and products made from this alloy. |
-
2020
- 2020-07-10 CN CN202010662558.1A patent/CN111621663A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5045411A (en) * | 1990-01-10 | 1991-09-03 | P.M. Refining, Inc. | Alloy compositions |
| US20090185946A1 (en) * | 2008-01-14 | 2009-07-23 | Thielemann Richard J | Karatium white |
| US20090185945A1 (en) * | 2008-01-14 | 2009-07-23 | Thielemann Richard J | Karatium pink |
| US20100008818A1 (en) * | 2008-01-14 | 2010-01-14 | Thielemann Richard J | Karatium sterling |
| CN101921925A (en) * | 2010-09-08 | 2010-12-22 | 深圳市金福珠宝首饰有限公司 | Gold alloy and preparation method thereof |
| CN102776406A (en) * | 2012-07-31 | 2012-11-14 | 深圳市中汇贵金属有限公司 | Gold alloy and method for preparing same |
| CN106756197A (en) * | 2017-01-17 | 2017-05-31 | 深圳市诺珠宝有限公司 | A kind of billon and preparation method thereof |
| CH714879A2 (en) * | 2018-04-12 | 2019-10-15 | Fabrice Thueler | Copper-based alloy for goldsmith, jewelery, watchmaking and products made from this alloy. |
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Application publication date: 20200904 |