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Champagne gold copper alloy material and preparation method thereof

An alloy material, golden copper technology, applied in metal rolling and other directions, can solve the problems of difficult preparation process, no practical application, dark rose gold color, etc., and achieves moderate preparation and processing difficulty, excellent chemical stability, and easy processing. The effect of formability

Active Publication Date: 2020-08-28
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For copper alloys for coinage, my country's current coinage materials mainly include nickel-clad steel, copper-clad steel, stainless steel, aluminum alloys and copper alloys, and the colors are mainly silvery white and golden yellow. Yellow HSn72-1-1 and HAl76-2 copper alloys, and silver-white BZn15-17 copper alloys, Shanghai Mint Co., Ltd. has developed rose gold copper alloys for coinage, but the alloys contain 0.0005-0.15 % B, making the preparation process more difficult, and the color of rose gold is dark, so it has not seen its practical application

Method used

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  • Champagne gold copper alloy material and preparation method thereof
  • Champagne gold copper alloy material and preparation method thereof
  • Champagne gold copper alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The alloy of the present invention is smelted using the following raw materials: electrolytic copper, pure nickel, copper-cobalt alloy (0.5wt% Co), copper-titanium alloy (5wt% Ti), titanium-strontium master alloy (strontium≤1wt%), copper-tellurium master alloy, Neodymium metal.

[0020] The composition of the alloy is shown in Example 1 of Table 1.

[0021] 1. Melting: use non-vacuum induction furnace for melting. The order of adding the alloy is: electrolytic copper, pure nickel, copper-cobalt alloy (0.5wt% Co), copper-titanium alloy (5wt% Ti), raise the temperature to 1350-1450°C until the melt is completely melted, keep it for 20min, Add titanium-strontium master alloy (strontium ≤ 1wt%) and copper-tellurium master alloy, keep warm for 10 minutes, and add metal neodymium. After fully degassing and removing impurities, keep warm for 8 minutes, fully stir, let stand for 5 minutes, and then cast out of the furnace.

[0022] 2. Face milling: Milling the alloy, milling...

Embodiment 2

[0028] The alloy of the present invention is smelted using the following raw materials: electrolytic copper, pure nickel, copper-cobalt alloy (0.5wt% Co), copper-titanium alloy (5wt% Ti), titanium-strontium master alloy (strontium≤1wt%), copper-tellurium master alloy, Neodymium metal.

[0029] The composition of the alloy is shown in Example 2 of Table 1.

[0030] 1. Melting: use non-vacuum induction furnace for melting. The order of adding the alloy is: electrolytic copper, pure nickel, copper-cobalt alloy (0.5wt% Co), copper-titanium alloy (5wt% Ti), raise the temperature to 1350-1450°C until the melt is completely melted, keep it for 20min, Add titanium-strontium master alloy (strontium ≤ 1wt%) and copper-tellurium master alloy, keep warm for 10 minutes, and add metal neodymium. After fully degassing and removing impurities, keep warm for 8 minutes, fully stir, let stand for 5 minutes, and then cast out of the furnace.

[0031] 2. Face milling: Milling the alloy, milling...

Embodiment 3

[0037] The alloy of the present invention is smelted using the following raw materials: electrolytic copper, pure nickel, copper-cobalt alloy (0.5wt% Co), copper-titanium alloy (5wt% Ti), titanium-strontium master alloy (strontium≤1wt%), copper-tellurium master alloy, Neodymium metal.

[0038] The composition of the alloy is shown in Example 3 of Table 1.

[0039] 1. Melting: use non-vacuum induction furnace for melting. The order of adding the alloy is: electrolytic copper, pure nickel, copper-cobalt alloy (0.5wt% Co), copper-titanium alloy (5wt% Ti), raise the temperature to 1350-1450°C until the melt is completely melted, keep it for 20min, Add titanium-strontium master alloy (strontium ≤ 1wt%) and copper-tellurium master alloy, keep warm for 10 minutes, and add metal neodymium. After fully degassing and removing impurities, keep warm for 8 minutes, fully stir, let stand for 5 minutes, and then cast out of the furnace.

[0040] 2. Face milling: Milling the alloy, milling...

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Abstract

The invention discloses a champagne gold copper alloy material and a preparation method thereof, and belongs to the technical field of non-ferrous metal material processing. The material comprises thefollowing composition of, with contents as blow, 8 wt%-10 wt% of Ni, 0.2 wt%-1.2 wt% of Co, 0.02 wt%-0.1 wt% of Ti, 0.02 wt%-0.4 wt% of Sr, 0.001 wt%-0.1 wt% of Te, 0.001 wt%-0.5 wt% of Nd, and the balance Cu. The black and white chromatic value L of an alloy final product reaches 60-90, a red and green chromatic value a reaches 2-10, a blue and yellow chromatic value b reaches 20-40, a glossy and beautiful champagne gold is achieved, the plastic elongation delta is greater than or equal to 25%, the anti-corrosion performance is less than or equal to 0.008 mm / a, and the material can be applied in the fields of coinage, decoration, art design and the like.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal material processing, and in particular relates to a champagne gold copper alloy material and a preparation method thereof. Background technique [0002] In recent years, copper and copper alloys have been widely used in the fields of coinage, decoration and art design due to their good chemical stability, good color stability, corrosion resistance, oxidation resistance, and easy processing, and are favored by people. [0003] With its magnificent and pleasing features, gold generally appears as a timeless popular color in high-end design and application. Due to the high value of metal gold, it is not conducive to circulation. Therefore, in the fields of coinage, decoration and art design, it is gradually replaced by imitation gold-copper alloy. Domestic imitation gold-copper alloys have developed rapidly in recent years. The products involve circulation coins, commemorative coins, city d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C1/03B21B3/00C22F1/08
CPCB21B3/00B21B2003/005B21B2201/06C22C1/03C22C9/06C22F1/08
Inventor 黄国杰彭丽军解浩峰张文婧杨振张习敏
Owner GRIMAT ENG INST CO LTD
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