High discoloration resistance and low-cost gold bronze alloy and preparation method thereof

A bronze alloy, low-cost technology, used in bookmarks and various decorative materials, artwork, high anti-tarnish low-cost golden bronze alloy and its preparation, can solve the problems of poor thermal processing performance and low yield, and achieve cutting processing Good performance, high gold degree, excellent anti-tarnish performance

Active Publication Date: 2019-07-05
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of poor hot workability and low yield of the existing golden copper alloy due to the addition of tin, and to provide an alloy with reasonable components, cheap raw materials, simple production process, low production cost, and easy processing. Good performance, high gold degre

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A golden copper alloy whose composition is Mn: 2.0%, Al: 2.0%, Ni: 2.0%, Si: 0.1%, Ce: 0.15%, Sr: 0.08%, P: 0.01%, B: 0.1%, and the balance is copper Component distribution ratio, respectively take pure nickel, pure aluminum, copper-manganese, copper-silicon, copper-strontium, copper-cerium, copper-phosphorus, nickel-boron intermediate alloy and electrolytic copper; first dry the electrolytic copper, add nickel And aluminum, heating and melting, the melting process uses cryolite, calcium fluoride, sodium carbonate and coke borax as covering agents, the volume percentage is 1:1:1:1. Then, copper-manganese, copper-silicon, copper-strontium, copper-cerium, copper-phosphorus, nickel-boron intermediate alloys are added to the electrolytic copper melt to obtain an alloy melt, and the furnace temperature is controlled at 1240°C. Converter, semi-continuous casting at 1190°C, with an average casting speed of 6.5m / h; the alloy ingot was heated to 900°C, kept for 4 hours, and seve...

Embodiment 2

[0063] The components are Mn: 3.0%, Al: 1.5%, Si: 0.15%, Ce: 0.1%, Sr: 0.1%, P: 0.02%, B: 0.1%, and the balance is copper. Take pure nickel, pure aluminum, copper-manganese, copper-silicon, copper-strontium, copper-cerium, copper-phosphorus, nickel-boron intermediate alloy and electrolytic copper; first dry and heat the electrolytic copper, add nickel and aluminum, Melting, the melting process uses cryolite, calcium fluoride, sodium carbonate and coke borax as covering agents, and the volume percentage is 1:1:1:1. Then, copper-manganese, copper-silicon, copper-strontium, copper-cerium, copper-phosphorus intermediate alloys are added to the electrolytic copper melt to obtain an alloy melt, and the furnace temperature is controlled at 1250°C. ℃ for semi-continuous casting, with an average casting speed of 6.0m / h; the alloy ingot was heated to 900°C, held for 4 hours, and seven passes of hot rolling were carried out. The deformation of the first pass was 26%, and the total deform...

Embodiment 3

[0065] The golden copper whose composition is Mn: 2.5%, Al: 2.0%, Ni: 2.0%, Si: 0.15%, Ce: 0.1%, Sr: 0.1%, P: 0.02%, B: 0.1%, and the balance is copper Alloy component distribution ratio, respectively take pure nickel, pure aluminum, copper-manganese, copper-silicon, copper-strontium, copper-cerium, copper-phosphorus, nickel-boron intermediate alloy and electrolytic copper; first dry the electrolytic copper, add Nickel and aluminum are heated and melted. During the melting process, cryolite, calcium fluoride, sodium carbonate and coke borax are used as covering agents, and the volume percentage is 1:1:1:1. Then, copper-manganese, copper-silicon, copper-strontium, copper-cerium, copper-phosphorus intermediate alloys are added to the electrolytic copper melt to obtain an alloy melt. The temperature of the furnace is controlled at 1250° C. ℃ for semi-continuous casting, with an average casting speed of 6.3m / h; the alloy ingot was heated to 880°C, held for 5 hours, and seven passe...

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PUM

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Abstract

The invention provides a high discoloration resistance and low-cost gold bronze alloy and a preparation method thereof. The high discoloration resistance and low-cost gold bronze alloy comprises the following components of Mn, Al, Ni, Si, Ce, Sr, P and B, and the balance Cu and inevitable impurities. The preparation method comprises the steps of smelting, semi-continuous casting, hot rolling, surface milling, cold rolling, intermediate annealing, cold finish rough rolling, cold finish rolling and finished product annealing. The alloy produced by the method has high gold color, good discoloration resistance performance, excellent hot and cold working properties and small deformation resistance, and does not contain noble metal elements, so that the alloy is relatively low in cost. The alloyhas reasonable components, and the gold degree of the alloy is improved through reasonable matching of cheap manganese, aluminum, nickel and silicon. The reasonable collocation of strontium, cerium,phosphorus and silicon can improve the technological performance and the discoloration resistance. The alloy is low in price of raw materials, simple in production process, environment-friendly, low in production cost, good in processing performance, high in the gold degree, excellent in discoloration resistance performance in environments such as salt mist, high-humidity and artificial sweat, andsuitable for industrial production.

Description

technical field [0001] The invention relates to a gold bronze alloy with high discoloration resistance and low cost and a preparation method thereof, which are mainly used in artworks, bookmarks and various decorative materials. It belongs to the field of new material technology. Background technique [0002] Gold has a dazzling golden yellow color and very stable chemical properties. In addition to being widely used as a functional material in electronic information and other fields, gold has always been the preferred material for artworks, handicrafts and other products. However, due to its low reserves and high price, as a large art market, a large number of applications are restricted. Therefore, high-quality and cheap imitation gold alloy products are getting more and more attention. [0003] The commonly used imitation gold products at home and abroad are mainly copper-based imitation gold products. Most of the domestic research is mainly to add aluminum, zinc, tin, ...

Claims

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Application Information

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IPC IPC(8): C22C9/05C22C9/01C22C9/06C22C1/03C22F1/08C22F1/02
CPCC22C1/03C22C9/01C22C9/05C22C9/06C22F1/002C22F1/02C22F1/08
Inventor 李周邱文婷王檬于翔宇
Owner CENT SOUTH UNIV
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