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Brittle failure resisting 14K rose gold free of silver and machining technology thereof

A rose gold and brittle fracture technology, applied in the field of gold alloys, can solve the problems of K rose gold brittle fracture, accelerate the solidification rate of castings, etc., and achieve the effects of improving mechanical properties, overcoming structural stress and brittleness, reducing processing efficiency and rejection rate.

Inactive Publication Date: 2018-10-30
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 K rose 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 for the low-temperature brittle fracture of K rose gold, and brittle fracture of K rose gold will still occur after long-term use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A silver-free and brittle-resistant 14K rose gold and its processing technology. In terms of weight percentage, the composition of the alloy is Ba:0.2wt.%, Se:0.1wt.%, Sb:1.2wt.%, Co:2.0wt.%, In:12.0wt.%, Au:57.0wt.% , and the balance is copper. The preparation method of the above-mentioned silver-free and brittle-resistant 14K rose gold includes the following steps: adding the above-mentioned raw materials into an argon-protected induction furnace, and using a graphite crucible; Avoid large air flow to cause serious burning of alloy elements; heat preservation at 1150 degrees for 10 minutes during smelting, and stir evenly with high-frequency induction furnace electromagnetically; after stirring evenly, heat preservation at 1250 degrees for 1 minute and cast out of the furnace; gold alloy casting adopts a diameter of 100-200mm The steel mold is cooled by water cooling. The obtained ingot is rolled at room temperature, and the amount of rolling in each pass is 30-40%;...

Embodiment 2

[0020] A silver-free and brittle-resistant 14K rose gold and its processing technology. In terms of weight percentage, the composition of the alloy is Ba:0.3wt.%, Se:0.4wt.%, Sb:1.4wt.%, Co:3.0wt.%, In:16.0wt.%, Au:59.0wt.% , and the balance is copper. The preparation method of the above-mentioned silver-free and brittle-resistant 14K rose gold includes the following steps: adding the above-mentioned raw materials into an argon-protected induction furnace, and using a graphite crucible; Avoid large air flow to cause serious burning of alloy elements; heat preservation at 1150 degrees for 10 minutes during smelting, and stir evenly with high-frequency induction furnace electromagnetically; after stirring evenly, heat preservation at 1250 degrees for 1 minute and cast out of the furnace; gold alloy casting adopts a diameter of 100-200mm The steel mold is cooled by water cooling. The obtained ingot is rolled at room temperature, and the amount of rolling in each pass is 30-40%;...

Embodiment 3

[0023] A silver-free and brittle-resistant 14K rose gold and its processing technology. In terms of weight percentage, the composition of the alloy is Ba:0.2wt.%, Se:0.2wt.%, Sb:1.3wt.%, Co:2.4wt.%, In:14.0wt.%, Au:58.0wt.% , and the balance is copper. The preparation method of the above-mentioned silver-free and brittle-resistant 14K rose gold includes the following steps: adding the above-mentioned raw materials into an argon-protected induction furnace, and using a graphite crucible; Avoid large air flow to cause serious burning of alloy elements; heat preservation at 1150 degrees for 10 minutes during smelting, and stir evenly with high-frequency induction furnace electromagnetically; after stirring evenly, heat preservation at 1250 degrees for 1 minute and cast out of the furnace; gold alloy casting adopts a diameter of 100-200mm The steel mold is cooled by water cooling. The obtained ingot is rolled at room temperature, and the amount of rolling in each pass is 30-40%;...

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Abstract

The invention discloses brittle failure resisting 14K rose gold free of silver and a machining technology of the brittle failure resisting 14K rose gold free of silver. The alloy is prepared from, 0.2-0.3 wt.% of Ba, 0.1-0.4 wt.% of Se, 1.2-1.4 wt.% of Sb, 2.0-3.0 wt.% of Co, 12.0-16.0 wt.% of In, 57.0-59.0 wt.% of Au and the balance copper. According to the novel 14K rose gold free of silver andthe machining technology of the 14K rose gold, the characteristic of low-temperature brittle failure of traditional rose gold is avoided, the development bottleneck of 14K red gold materials for jewellery is broken through by innovating and optimizing alloy ingredients, and the implementation and industrialization of materials will obtain plenteous economic gains 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 the rarest of the metals, a golden-yellow and corrosion-resistant precious metal. Pure gold is the best electronic conductor material, has good ductility, can be pressed into thin foil, and has extremely high heat transfer and electrical conductivity. Gold alloys are formed when other alloying elements are added to gold. For gold alloys, except for white gold, others are called colored gold. The reason for the color is due to the different proportions of the metals. Many gold alloys have these effects, such as gold-nickel alloys, gold-indium alloys, gold-copper alloys, gold-silver alloys, etc. The color of most gold alloys is golden yellow series, such as golden yellow, light golden yellow, rose gold. Another color system is reddish, such as pink, pink, rose red. Gold and silver alloys can also get green, and gold-nickel al...

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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