Non-nickel jewelry 18K platinum capable of avoiding low-temperature brittleness

A technology of low temperature brittleness and jewelry, applied in the field of gold alloys, can solve side effects and other problems, and achieve the effect of low melting point temperature, low price and good color

Inactive Publication Date: 2018-11-13
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the immune response is an act of self-defense by the body, it is often accompanied by side effects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] An 18K white gold for jewelry that is nickel-free and avoids low-temperature brittleness. In terms of weight percentage, the composition of the alloy is Li:0.5wt.%, Re:0.4wt.%, Ca:1.2wt.%, Al:4.0wt.%, In:10.0wt.%, Ag:5.0wt.% , and the balance is gold. The above-mentioned preparation method of 18K platinum for jewellery, which does not contain nickel and can avoid low-temperature brittleness, comprises the following steps: adding the above-mentioned raw materials into an argon-protected induction furnace, and using a graphite crucible; The flow of argon is protected to avoid severe burning of the alloy elements due to the large air flow; when smelting, it is kept at 1200 degrees for 10 minutes, and it is evenly stirred by a high-frequency induction furnace; after stirring, it is kept at 1200 degrees for 1 minute and cast out of the furnace; gold alloy Casting adopts a steel mold with a diameter of 50-100mm, and uses water cooling to cool down. The obtained ingot is rol...

Embodiment 2

[0020]An 18K white gold for jewelry that is nickel-free and avoids low-temperature brittleness. In terms of weight percentage, the composition of the alloy is Li:0.8wt.%, Re:0.6wt.%, Ca:1.5wt.%, Al:6.0wt.%, In:12.0wt.%, Ag:6.0wt.% , and the balance is gold. The above-mentioned preparation method of 18K platinum for jewellery, which does not contain nickel and can avoid low-temperature brittleness, comprises the following steps: adding the above-mentioned raw materials into an argon-protected induction furnace, and using a graphite crucible; The flow of argon is protected to avoid severe burning of the alloy elements due to the large air flow; when smelting, it is kept at 1200 degrees for 10 minutes, and it is evenly stirred by a high-frequency induction furnace; after stirring, it is kept at 1200 degrees for 1 minute and cast out of the furnace; gold alloy Casting adopts a steel mold with a diameter of 50-100mm, and uses water cooling to cool down. The obtained ingot is roll...

Embodiment 3

[0023] An 18K white gold for jewelry that is nickel-free and avoids low-temperature brittleness. In terms of weight percentage, the composition of the alloy is Li:0.6wt.%, Re:0.5wt.%, Ca:1.4wt.%, Al:4.5wt.%, In:11.0wt.%, Ag:5.2wt.% , and the balance is gold. The above-mentioned preparation method of 18K platinum for jewellery, which does not contain nickel and can avoid low-temperature brittleness, comprises the following steps: adding the above-mentioned raw materials into an argon-protected induction furnace, and using a graphite crucible; The flow of argon is protected to avoid severe burning of the alloy elements due to the large air flow; when smelting, it is kept at 1200 degrees for 10 minutes, and it is evenly stirred by a high-frequency induction furnace; after stirring, it is kept at 1200 degrees for 1 minute and cast out of the furnace; gold alloy Casting adopts a steel mold with a diameter of 50-100mm, and uses water cooling to cool down. The obtained ingot is rol...

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PUM

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Abstract

The invention discloses non-nickel jewelry 18K platinum capable of avoiding low-temperature brittleness. The alloy comprises components including, by weight percent, 0.5 wt.%-0.8 wt.% of Li, 0.4 wt.%-0.6 wt.% of Re, 1.2 wt.%-1.5 wt.% of Ca, 4.0 wt.%-6.0 wt.% of Al, 10.0 wt.%-12.0 wt.% of In, 5.0 wt.%-6.0 wt.% of Ag, and the balance gold. The non-nickel jewelry 18K platinum solves the problem thatthe nickel element to which people are allergic is commonly contained in current K platinum. Through alloy component optimization and innovation, the non-nickel K platinum material friendly to the human body is developed, and the development bottleneck in the jewelry field is effectively broken through. It can be predicted that rich economic gains and social benefits can be obtained due to material implementation and industrialization.

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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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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