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Li and Sn containing gold alloy for 14K red gold with low-temperature brittle fracture inhibition

An alloy and brittle fracture technology, which is applied in the field of gold alloys, can solve the problems of accelerating the solidification speed of castings and brittle fracture of 14K red gold, and achieves the effects of simple smelting and processing methods, avoiding material brittle fracture, and reducing equipment requirements

Inactive Publication Date: 2018-11-06
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, the brittle fracture problem of 14K red gold can only be solved by indirect methods, such as accelerating the solidification speed of castings, adopting the process of deformation after homogenization, etc.
However, these methods cannot fundamentally provide a complete solution to the low-temperature brittle fracture of 14K red gold, and 14K red gold will still undergo brittle fracture after long-term use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A Li- and Sn-containing gold alloy for 14K red gold with the ability to suppress low-temperature brittle fracture. In terms of weight percentage, the composition of the alloy is Li:0.2wt.%, V:0.4wt.%, Sn:1.5wt.%, Al:2.0wt.%, Ag:12.0wt.%, Au:57.0wt.% , and the balance is copper. The above-mentioned preparation method for 14K red gold containing Li and Sn gold alloy with low-temperature brittle fracture suppression comprises the following steps: adding the above proportioned raw materials into an argon-protected induction furnace, and using a graphite crucible; Low-flow argon gas protection to avoid severe burning of alloy elements due to large air flow; heat preservation at 1050 degrees for 10 minutes during smelting, and electromagnetic stirring in a high-frequency induction furnace; after stirring evenly, heat preservation at 1250 degrees for 1 minute and cast out of the furnace; gold Alloy casting uses a steel mold with a diameter of 100-200mm, and uses water cooling...

Embodiment 2

[0021]A Li- and Sn-containing gold alloy for 14K red gold with the ability to suppress low-temperature brittle fracture. In terms of weight percentage, the composition of the alloy is Li:0.4wt.%, V:0.6wt.%, Sn:1.8wt.%, Al:2.4wt.%, Ag:20.0wt.%, Au:59.0wt.% , and the balance is copper. The above-mentioned preparation method for 14K red gold containing Li and Sn gold alloy with low-temperature brittle fracture suppression comprises the following steps: adding the above proportioned raw materials into an argon-protected induction furnace, and using a graphite crucible; Low-flow argon gas protection to avoid severe burning of alloy elements due to large air flow; heat preservation at 1050 degrees for 10 minutes during smelting, and electromagnetic stirring in a high-frequency induction furnace; after stirring evenly, heat preservation at 1250 degrees for 1 minute and cast out of the furnace; gold Alloy casting uses a steel mold with a diameter of 100-200mm, and uses water cooling ...

Embodiment 3

[0024] A Li- and Sn-containing gold alloy for 14K red gold with the ability to suppress low-temperature brittle fracture. In terms of weight percentage, the composition of the alloy is Li:0.3wt.%, V:0.5wt.%, Sn:1.6wt.%, Al:2.2wt.%, Ag:15.0wt.%, Au:58.0wt.% , and the balance is copper. The above-mentioned preparation method for 14K red gold containing Li and Sn gold alloy with low-temperature brittle fracture suppression comprises the following steps: adding the above proportioned raw materials into an argon-protected induction furnace, and using a graphite crucible; Low-flow argon gas protection to avoid severe burning of alloy elements due to large air flow; heat preservation at 1050 degrees for 10 minutes during smelting, and electromagnetic stirring in a high-frequency induction furnace; after stirring evenly, heat preservation at 1250 degrees for 1 minute and cast out of the furnace; gold Alloy casting uses a steel mold with a diameter of 100-200mm, and uses water cooling...

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PUM

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Abstract

The invention discloses Li and Sn gold alloy for 14K red gold with low-temperature brittle fracture inhibition. The alloy comprises, by weight, 0.2-0.4wt.% of Li, 0.4-0.6wt.% of V, 1.5-1.8wt.% of Sn,2.0-2.4wt.% of Al, 12.0-20.0wt.% of Ag, 57.0-59.0wt.% of Au and the balance of copper. The problem about lag in technology that existing 14K red gold materials are low-temperature brittle is solved; through innovation and optimization of alloy composition, the bottleneck of the 14K red gold material for jewelry is broken through; the implementation of the material and the industrialization can predictably achieve substantial economical results and social benefits.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a gold alloy. Background technique [0002] Gold is a precious metal and one of the earliest metals discovered and developed by human beings. It is an important raw material for making jewelry and coins, and it is also an important reserve material of the country. It is known as the king of metals. It is not only regarded as a symbol of beauty and wealth, but also benefits human life with its unique value. An important application field of gold is decorative materials, including jewelry and so on. Gold can also be used in daily necessities, such as gold-plated clocks, belt buckles, lighters, pens, etc. Watch Kingdom Switzerland is not a big country, but its jewelry industry consumes about 40 tons of gold every year, 95% of which are used in watchmaking. Only one watch factory in Japan consumes 1 ton of gold salt a year, equivalent to 680 kilograms of gold. The use of gold is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C5/02C22C1/02C22F1/14
CPCC22C5/02C22C1/02C22F1/14
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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