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High-performance complex multi-element phosphor bronze alloy material and preparation method thereof

An alloy material, high-performance technology, applied in the field of high-performance complex multi-element phosphor bronze alloy material and its preparation, can solve the problems of high raw material cost, low production efficiency, high price, etc., to reduce production cost, improve production efficiency, reduce The effect of the degree of segregation

Active Publication Date: 2016-01-27
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the high-strength and high-elasticity copper-based alloys in the domestic market are mainly beryllium bronze and high-tin phosphor bronze (QSn8-0.3, QSn10-0.3) and other alloy series, among which beryllium bronze is the king of elasticity of non-ferrous metal materials, and has incomparable performance advantages compared with other materials. , but because beryllium has serious damage to human health and the environment, and the processing technology of beryllium bronze alloy is complicated and the actual production is difficult, so it is only used in special fields
The commonly used high-tin phosphorus bronze alloy has a tin content as high as 8-10%. After the alloy is produced by horizontal continuous casting, tin segregation is easy to occur in the billet, which requires a long period of homogenization heat treatment and multiple heat treatments to eliminate it. The production efficiency is low. And the price of Sn is more expensive, the higher the tin content, the higher the corresponding raw material cost
In addition, the electrical conductivity of high-tin phosphorus bronze alloy is only 12% IACS, which is difficult to meet the development needs of highly elastic conductive copper-based alloy materials, which affects the further industrial production and marketing of high-tin phosphorus bronze alloy

Method used

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Experimental program
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Effect test

Embodiment 1

[0030] The alloy of the invention is smelted using the following raw materials: tin phosphor bronze QSn6.5-0.1 scrap, electrolytic copper, electrolytic nickel, electrolytic cobalt, pure zinc, copper boron and copper-iron master alloy. The composition of the alloy is shown in Example 1 of Table 1.

[0031] 1. Smelting: Add 70% tin phosphor bronze QSn6.5-0.1 scrap and 30% new materials into the power frequency induction furnace, among which new materials include electrolytic copper, electrolytic nickel, electrolytic cobalt, pure zinc, copper boron and copper For iron intermediate alloys, raise the temperature to 1260°C. After the electrolytic copper is melted, add burning charcoal to cover it. After fully stirring, let it stand for 15 minutes. When the holding temperature is 1220°C, perform horizontal continuous casting. Casting process parameters It is: pulling speed is 14mm / s, stop for 2.5s, reverse pushing speed is 12mm / s, strip blank outlet temperature is 450℃.

[0032] 2. ...

Embodiment 2

[0040] The alloy of the invention is smelted using the following raw materials: tin phosphor bronze QSn6.5-0.1 scrap, electrolytic copper, electrolytic nickel, electrolytic cobalt, pure zinc, copper iron and copper zirconium master alloy. The composition of the alloy is shown in Example 2 of Table 1.

[0041] 1. Smelting: Add 70% tin phosphor bronze QSn6.5-0.1 scrap and 30% new materials into the power frequency induction furnace, among which new materials include electrolytic copper, electrolytic cobalt, electrolytic nickel, pure zinc, copper iron and copper For zirconium master alloy, raise the temperature to 1280°C. After the electrolytic copper is melted, add burning charcoal to cover it. After fully stirring, let it stand for 25 minutes. When the holding temperature is 1250°C, perform horizontal continuous casting. Casting process parameters It is: pulling speed is 16mm / s, stop for 3.5s, reverse pushing speed is 10mm / s, strip blank outlet temperature is 350℃.

[0042] 2....

Embodiment 3

[0050] The alloy of the invention is smelted using the following raw materials: tin phosphor bronze QSn6.5-0.1 scrap, electrolytic copper, electrolytic nickel, pure zinc, copper boron, copper iron and copper zirconium master alloy. The composition of the alloy is shown in Example 3 of Table 1.

[0051] 1. Melting: Add 70% tin phosphor bronze QSn6.5-0.1 scrap and 30% new materials into the power frequency induction furnace, among which new materials include electrolytic copper, electrolytic nickel, pure zinc, copper boron, copper iron and copper For zirconium master alloy, raise the temperature to 1300°C. After the electrolytic copper is melted, add burning charcoal to cover it. After fully stirring, let it stand for 20 minutes. When the holding temperature is 1230°C, perform horizontal continuous casting. Casting process parameters It is: pulling speed is 15mm / s, stop for 3s, reverse pushing speed is 11mm / s, strip blank outlet temperature is 400℃.

[0052] 2. Rough rolling: t...

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Abstract

The invention relates to a high-performance complex multi-element phosphor bronze alloy material and a preparation method thereof, and belongs to the field of processing of nonferrous metal. The alloy material comprises the following components in percentage by weight: 3.9-4.4% of Sn, 0.05-0.1% of Ni, 0.05-0.2% of Zn, 0.05-0.2% of Fe, 0.02-0.08% of P, and the balance of Cu. In addition, the alloy further comprises two or more elements of Co, B and Zr. The material is obtained through such processes as smelting and casting, rough rolling, primary intermediate annealing, acid washing, intermediate rolling, secondary intermediate annealing, acid washing, finish rolling and low-temperature annealing. The method can omit a high-temperature and long-time uniform annealing process, the alloy production efficiency is improved, and the alloy production cost is greatly reduced. The alloy can replace a classic tin-phosphor bronze QSn8-0.3 alloy, and is applied to the manufacturing of such elements as contact pieces and connectors for electronic electric appliances and vehicles.

Description

technical field [0001] The invention relates to a high-performance complex multi-element phosphor bronze alloy material and a preparation method thereof, belonging to the field of nonferrous metal processing. Background technique [0002] With the development of modern science and technology, the electronics, communications and automobile industries are in a stage of rapid development, and the demand for copper-based elastic alloys for elastic components such as connectors and connectors is increasing day by day. At the same time, more stringent requirements are put forward for the performance of copper-based elastic alloys, such as alloys requiring high strength, high electrical conductivity, high elasticity, high stress relaxation resistance, and high fatigue strength. At present, the high-strength and high-elasticity copper-based alloys in the domestic market are mainly beryllium bronze and high-tin phosphor bronze (QSn8-0.3, QSn10-0.3) and other alloy series, among which...

Claims

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Application Information

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IPC IPC(8): C22C9/02B22D27/20C22F1/08
Inventor 黄国杰彭丽军王建立程磊马吉苗王建伟刘峰肖伟汪东亚王立根
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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