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Novel high-corrosion-resistance and anti-discoloration imitation gold copper alloy and preparation method thereof

A technology with high corrosion resistance and anti-discoloration, applied in the field of new materials, can solve the problem of high preparation cost, achieve the effect of improving corrosion resistance, improving machining performance, and reducing the risk of electrochemical corrosion

Active Publication Date: 2021-10-29
SHENYANG MINT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a novel gold imitation copper alloy with high corrosion resistance and discoloration resistance and its preparation method. Alloying elements with high prices such as silver and silver make the preparation cost of materials high

Method used

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  • Novel high-corrosion-resistance and anti-discoloration imitation gold copper alloy and preparation method thereof
  • Novel high-corrosion-resistance and anti-discoloration imitation gold copper alloy and preparation method thereof
  • Novel high-corrosion-resistance and anti-discoloration imitation gold copper alloy and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The components are Al: 7.0wt.%, Zn: 7.5wt.%, Si: 0.2wt%, Sr: 0.04wt%, Ce: 0.06wt%, and the balance is copper. Zinc, pure aluminum, copper-silicon, copper-strontium, copper-cerium master alloy and electrolytic copper; first, dry the electrolytic copper, add aluminum, heat and melt, and cover the melting process with cryolite, calcium fluoride and coke borax agent, the volume percentage is 1:1:1; then add pure zinc, stir evenly and filter out scum, then add copper-silicon, copper-strontium, copper-cerium intermediate alloys to obtain alloy melt, and stir the melt evenly After that, the slag was removed again, the furnace temperature was controlled at 1300°C, and the converter was used to perform semi-continuous casting at 1200°C to obtain copper alloy ingots, with an average casting speed of 6.0m / h;

[0031] Heat the copper alloy ingot at 780°C for 2 hours, then raise the temperature to 850°C for 9 passes of hot rolling. The deformation of the first pass is 28%, and the d...

Embodiment 2

[0035]The components are Al: 6wt%, Zn: 8wt%, Si: 0.15wt%, Sr: 0.03wt%, Ce: 0.05wt% and the balance is the golden copper alloy composition proportion of copper, respectively take pure zinc, pure aluminum, Copper-silicon, copper-strontium, copper-cerium intermediate alloys and electrolytic copper; first, dry the electrolytic copper, add aluminum, heat and melt, and use cryolite, calcium fluoride and coke borax as covering agents during the melting process, and the volume percentage is 1:1:1; then add pure zinc, stir evenly, filter out scum, then add copper-silicon, copper-strontium, copper-cerium intermediate alloys to obtain alloy melt, stir the melt evenly and remove slag again, The furnace temperature is controlled at 1300°C, and the converter is used to perform semi-continuous casting at 1200°C to obtain copper alloy ingots, with an average casting speed of 6.0m / h;

[0036] Heat the copper alloy ingot at 780°C for 2 hours, then raise the temperature to 850°C for 9 passes of ...

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Abstract

The invention provides a novel high-corrosion-resistance and anti-discoloration imitation gold copper alloy and a preparation method thereof. The novel high-corrosion-resistance and anti-discoloration imitation gold copper alloy is prepared from the components, by weight, 4%-8% of Al, 6%-12% of Zn, 0.05%-0.20% of Si, 0.01%-0.05% of Sr, 0.02%-0.08% of Ce and the balance Cu, and the novel high-corrosion-resistance and anti-discoloration imitation gold copper alloy is obtained through the preparation method including smelting, ingot casting, hot rolling, cold rolling and recrystallization annealing. The elements Cu, Zn, Al, Si, Ce and Sr are added into the copper alloy, and the components are proportionally blended, so that the golden degree of the imitation gold alloy is remarkably improved; a compact oxidation film is formed on the surface of the alloy by the aid of the chemical properties of the elements, so that the corrosion resistance and discoloration resistance of the imitation gold copper alloy in various environments are greatly improved, and meanwhile, the alloy system also greatly reduces the production cost of the imitation gold copper alloy.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a novel gold-copper alloy with high corrosion resistance and discoloration resistance and a preparation method thereof. Background technique [0002] Because of its noble, gorgeous, graceful and generous color, gold is deeply loved by people of all ethnic groups in the world. Its chemical properties are stable, and it is known as "real gold is not afraid of fire". In addition to being widely used in functional materials in communication, storage hardware and other fields , Gold has always been the material of choice in fields such as currency, jewelry, and decoration. However, due to the high price and low reserves of gold, its application is greatly restricted, so cheap and high-quality imitation gold alloys are more and more popular. [0003] Imitation gold copper alloy is widely used in coinage, decoration and other industries due to its noble color and good processing ...

Claims

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Application Information

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IPC IPC(8): C22C9/01C22C9/04C22C1/03C22F1/08C22F1/02
CPCC22C9/01C22C9/04C22C1/03C22F1/08C22F1/02
Inventor 梁军李周肖柱张晓男胡云明王菲于翔宇朱慕平
Owner SHENYANG MINT CO LTD
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