A kind of gold-copper alloy with high corrosion resistance and discoloration resistance and preparation method thereof

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

Active Publication Date: 2022-05-31
SHENYANG MINT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of gold-copper alloy with high corrosion resistance and discoloration resistance and preparation method thereof
  • A kind of gold-copper alloy with high corrosion resistance and discoloration resistance and preparation method thereof
  • A kind of gold-copper alloy with high corrosion resistance and discoloration resistance and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0030] The composition ratio of the golden copper alloy with the composition of Al: 7.0wt.%, Zn: 7.5wt.%, Si: 0.2wt%, Sr: 0.04wt%, Ce: 0.06wt%, and the balance of copper, take the pure Zinc, pure aluminum, copper-silicon, copper-strontium, copper-cerium master alloy and electrolytic copper; first, the electrolytic copper is dried, aluminum is added, heated and melted, and the melting process is covered with cryolite, calcium fluoride and pyrogenic borax The volume percentage is 1:1:1; then pure zinc is added, and the scum is filtered off after stirring evenly, and then copper-silicon, copper-strontium, and copper-cerium master alloys are added to obtain an alloy melt, and the melt is stirred evenly After slag removal again, the furnace temperature was controlled at 1300 °C, and the converter was used for semi-continuous casting at 1200 °C to obtain copper alloy ingots, with an average casting speed of 6.0m / h;

[0031] The copper alloy ingot was heated and kept at 780°C for 2 h...

Embodiment 2

[0035]The composition of the golden copper alloy composition is Al: 6wt%, Zn: 8wt%, Si: 0.15wt%, Sr: 0.03wt%, Ce: 0.05wt% and the balance is copper. Copper-silicon, copper-strontium, copper-cerium master alloy and electrolytic copper; first, the electrolytic copper is dried, aluminum is added, heated and melted, and the melting process uses cryolite, calcium fluoride and pyrogenic borax as covering agents, and the volume percentage is 1:1:1; then add pure zinc, stir evenly, filter out the scum, then add copper-silicon, copper-strontium, copper-cerium master alloys to obtain an alloy melt, stir the melt evenly, and then remove the slag again, Controlling the furnace temperature at 1300°C, semi-continuous casting in the converter at 1200°C to obtain copper alloy ingots, the average casting speed is 6.0m / h;

[0036] The copper alloy ingot was heated and kept at 780°C for 2 hours, and then heated to 850°C for 9 passes of hot rolling. The deformation of the first pass was 28%, and ...

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Abstract

The present invention provides a novel gold imitation copper alloy with high corrosion resistance and discoloration resistance and a preparation method thereof. The composition of the novel gold imitation copper alloy with high corrosion resistance and discoloration resistance is Al4‑8wt%, Zn6‑12wt%, Si0 .05-0.20wt%, Sr0.01-0.05wt%, Ce0.02-0.08wt%, and the balance being Cu, obtained by the preparation methods of smelting, ingot casting, hot rolling, cold rolling and recrystallization annealing. In the present invention, by adding Cu, Zn, Al, Si, Ce and Sr elements to the copper alloy, and combining the ratio of the components, the gold degree of the imitation gold alloy is significantly improved, and the chemical properties of each element are used to form a compact surface on the surface of the alloy. The oxide film can greatly improve the corrosion resistance and discoloration resistance of the imitation gold-copper alloy in various environments, and at the same time, 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 high-corrosion-resistance and discoloration-resistant imitation gold-copper alloy and a preparation method thereof. Background technique [0002] Gold is deeply loved by people of all ethnic groups in the world due to its noble, gorgeous and graceful color. 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 the fields of communication and storage hardware, gold , gold has always been the preferred material in the fields of currency, jewelry, decoration and so on. However, due to the high price and low reserves of gold, its application has been greatly restricted, so cheap and high-quality imitation gold alloys are increasingly favored by people. [0003] Imitation gold-copper alloy is widely used in coinage, decoration and other industries due to its noble color and g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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