Highly-resistant-to-color-changing gold anti-corrosion copper alloy and panel preparing method thereof

A color-changing gold and copper alloy technology, which is applied in the field of preparation of high color-resistant and high-corrosion CuZnAlNiSiCeB-based gold-colored copper alloys, can solve the problem of not meeting the requirements of golden color and high corrosion resistance, insufficient corrosion resistance of alloys, and undesigned semi-finished products. Continuous casting process and other issues, to achieve the effect of excellent cold working performance, saving processing cost, excellent anti-tarnish performance and corrosion resistance

Active Publication Date: 2013-08-14
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

This patented alloys have several technical properties: they provide strong metal colors without losing their color or being affected easily during manufacturing processes; they resist damage from acid rain while maintaining good castability when used at temperatures below 35C (−20° C.) due to improved cooling efficiency caused by reduced water content). They produce superior mechanical strength compared to existing materials but still work well even after exposures to salty environments such as sea air. Additionally, these compositions show less expensive methods than traditional ones, making them ideal candidates for use in industry settings where environmental concerns prevent widespread usage.

Problems solved by technology

The technical problem addressed by this patented relates to developing a new type of yellow pigmented or red colored metallurgytic steel that meets both economic demands such as reducing environmental concerns and increasing demand levels for commercial sale. Current solutions involve expensive chrome plating processes like electroless nickel coatings, immersion galvanizing films, chromate treatment systems, acid cleaners, chloroquinoxanes, cyanide compounds, silver grays, zinc oxides, tantalite ceramics, tungsten carboxylids, platinum black colors, magnetic properties, antimicroflaque effects, and soluble impurities. These challenges require development of a simpler yet highly effective solution without adding heavy elements like selenium into the manufacturing process.

Method used

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  • Highly-resistant-to-color-changing gold anti-corrosion copper alloy and panel preparing method thereof

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Experimental program
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Embodiment 1

[0044]The components are: Cu: 78.5wt%, Al: 2.0wt%, Ni: 0.5wt%, B: 0.005wt%, Ce: 0.1wt%, Si: 0.2wt%, the balance is Zn and unavoidable impurities 1# alloy and Cu: 78.5wt%, Al2.3wt%, Ni: 0.5wt%, B: 0.005wt%, Ce: 0.1wt%, Si: 0.5wt%, the balance is Zn and unavoidable impurities 2 #Alloy, according to the steps (1)-(10) of "Content of the Invention", make a plate with a thickness of 2 ± 0.05mm. Wherein in the step (4), the hot rolling pass deformation is about 60%, and the total deformation is 90%; in the step (6), the cold rolling pass deformation is about 50%, and the total deformation is about 70%; in the step (7), The annealing temperature is 700°C, and the annealing time is 1 hour; the cold finish rolling deformation in step (9) is about 33%; the annealing temperature of the finished product in step (10) is 700°C, and the annealing time is 1 hour. The above two plates and the existing HSn72-1-1 plate for coinage are processed into blank cakes, and after polishing, the gold co...

Embodiment 2

[0049] The components are: Cu: 78.5wt%, Al: 2.0wt%, Ni: 0.5wt%, B: 0.005wt%, Ce: 0.1wt%, Si: 0.2wt%, the balance is Zn and unavoidable impurities 1# alloy and Cu: 78.5wt%, Al2.3wt%, Ni: 0.5wt%, B: 0.005wt%, Ce: 0.1wt%, Si: 0.5wt%, the balance is Zn and unavoidable impurities 2 #Alloy, according to the steps (1)-(10) of "Content of the Invention", make a plate with a thickness of 2 ± 0.05mm. Wherein in the step (4), the hot rolling pass deformation is about 60%, and the total deformation is 90%; in the step (6), the cold rolling pass deformation is about 50%, and the total deformation is about 70%; in the step (7), The annealing temperature is 700°C, and the annealing time is 1 hour; the cold finish rolling deformation in step (9) is about 33%; the annealing temperature of the finished product in step (10) is 700°C, and the annealing time is 1 hour. The above-mentioned plates and HAl77-2B, HSn70-1A and HSn72-1-1 plates commonly used in the market are processed into blank cakes...

Embodiment 3

[0054] The composition Cu: 78.5wt%, Al: 2.0wt%, Ni: 0.5wt%, B: 0.005wt%, Ce: 0.1wt%, Si: 0.2wt%, the balance is Zn and 1# of unavoidable impurities Alloy, according to the steps (1)-(10) of "Content of the Invention" to make a plate with a thickness of 2±0.05mm. Wherein in the step (4), the hot rolling pass deformation is about 60%, and the total deformation is 90%; in the step (6), the cold rolling pass deformation is about 50%, and the total deformation is about 70%; in the step (7), The annealing temperature is 700°C, and the annealing time is 1 hour; the cold finish rolling deformation in step (9) is about 33%; the annealing temperature of the finished product in step (10) is 700°C, and the annealing time is 1 hour. Process the above plates and HAl72-2B, HSn72-1-1 plates into blank cakes. After polishing, they are exposed to salt spray environment for 24 hours according to the method of GB / T10125-1997, and then observe the morphology of the corrosion layer. figure 1 It is...

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Abstract

The invention relates to a highly-resistant-to-color-changing gold anti-corrosion copper alloy and a panel preparing method thereof. The alloy is formed by the chemical components as follows: 77-79wt (weight) percent of Cu, 2.0-2.3 wt percent of Al, 0.4-0.6 wt percent of Ni, 0.005-0.01 wt percent of B, 0.05-0.15 wt percent of Ce, 0.2-0.5 wt percent of Si, and the balance of Zn and inevitable impurities. The preparing process comprises the steps of 1, smelting, 2, semi-continuous casting, 3 milling, 4, hot rolling, 5 milling, 6, cold rolling, 7, intermediate annealing, 8, pickling, 9, cold finish rolling, 10, finish product annealing and the like. The highly-resistant-to-color-changing gold anti-corrosion copper alloy is reasonable in component, simple in production process, low in production cost, excellent in casting and processing properties, suitable for performing batch production by using a semi-continuous casting process, and compared with the existing copper alloy such as HAl77-2B, HSn70-1A, HSn72-1-1, the alloy produced by the method is more close to gold in color, better in color-changing-resistant and anti-corrosion properties, and is applied in the fields such as decorating, energy engineering and marine engineering.

Description

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Claims

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Application Information

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Owner CENT SOUTH UNIV
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