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Anti-stress relaxation beryllium free copper alloy with high strength and high elasticity as well as preparation and processing methods thereof

A technology of beryllium copper alloy and processing method, which is applied in the field of high strength, high elasticity, stress relaxation resistance, beryllium copper alloy and its preparation and processing, can solve the problems of high environmental protection requirements, long production process, high production cost, etc., and achieve machinable Excellent performance, reduced production energy consumption, high fatigue effect

Inactive Publication Date: 2013-06-26
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because beryllium bronze has relatively high environmental protection requirements, long production process, and high energy consumption, the production cost is relatively high.
In view of this situation, there is an urgent need to develop a new type of high-strength and high-elasticity copper alloy material for replacement in the mid-to-high-end application field. At present, this research is relatively backward in China, and there is no reasonable substitute for any material

Method used

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  • Anti-stress relaxation beryllium free copper alloy with high strength and high elasticity as well as preparation and processing methods thereof
  • Anti-stress relaxation beryllium free copper alloy with high strength and high elasticity as well as preparation and processing methods thereof

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Embodiment 1

[0029] The alloy of the invention is smelted using the following raw materials: electrolytic copper, pure nickel, cobalt powder and pure silicon. The composition of the alloy is shown in Example 1 of Table 1.

[0030] 1. Melting: use non-vacuum induction furnace for melting. The order of adding the alloy is: first add Cu, after melting, then add Ni and Si, add covering agent (charcoal) and keep warm for 5-10min, after fully degassing and removing impurities, then cover with burning charcoal about 10mm thick. Then add cobalt powder (covered with copper foil), the melting temperature is 1280°C, keep the temperature for 10 minutes, let it stand for 5-10 minutes, and then cast it out of the furnace, the casting temperature is 1200°C.

[0031] 2. Face milling: face milling of the alloy (2mm milling on the upper and lower surfaces, 1mm milling on the left and right sides).

[0032] 3. Hot rolling: the alloy is heated, the heating temperature is 970° C., the holding time is 2 hours...

Embodiment 2

[0040] The alloy of the invention is smelted using the following raw materials: electrolytic copper, pure nickel, cobalt powder and pure silicon. The composition of the alloy is shown in Example 2 of Table 1.

[0041] 1. Melting: use non-vacuum induction furnace for melting. The order of adding the alloy is: first add Cu, after melting, then add Ni and Si, add covering agent (charcoal) and keep warm for 5-10min, after fully degassing and removing impurities, then cover with burning charcoal about 10mm thick. Then add cobalt powder (covered with copper foil), the melting temperature is 1250°C, keep the temperature for 10 minutes, let it stand for 5-10 minutes, and then cast it out of the furnace, the casting temperature is 1150°C.

[0042] 2. Face milling: face milling of the alloy (2mm milling on the upper and lower surfaces, 1mm milling on the left and right sides).

[0043] 3. Hot rolling: the alloy is heated, the heating temperature is 950° C., the holding time is 2.5 hou...

Embodiment 3

[0051] The alloy of the invention is smelted using the following raw materials: electrolytic copper, pure nickel, cobalt powder and pure silicon. The composition of the alloy is shown in Example 3 of Table 1.

[0052] 1. Melting: use non-vacuum induction furnace for melting. The order of adding the alloy is: first add Cu, after melting, then add Ni and Si, add covering agent (charcoal) and keep warm for 5-10min, after fully degassing and removing impurities, then cover with burning charcoal about 10mm thick. Then add cobalt powder (covered with copper foil), the melting temperature is 1300°C, hold the temperature for 10 minutes, let it stand for 5-10 minutes, and then cast it out of the furnace, the casting temperature is 1200°C.

[0053] 2. Face milling: face milling of the alloy (2mm milling on the upper and lower surfaces, 1mm milling on the left and right sides).

[0054] 3. Hot rolling: the alloy is heated, the heating temperature is 950° C., the holding time is 2.5 hou...

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Abstract

The invention relates to an anti-stress relaxation beryllium free copper alloy with high strength and high elasticity as well as preparation and processing methods thereof, and belongs to the field of processing of nonferrous metals. The alloy comprises the components in percentage by weight as follows: 0.7-1.7% of Ni, 0.4-0.8% of Si, 0.8-2.0% of Co and the balance of Cu. The components of the alloy meet the conditions: (a) (Ni+Co) / Si is greater than or equal to 3.4 but less than or equal to 6.5; (b) (Ni+Co) is greater than or equal to 1.0% but less than or equal to 3.5%; (c) Ni / Co is greater than or equal to 0.4% but less than or equal to 1.3%; (d) (Ni+Co+Si) is greater than or equal to 2.0% but less than or equal to 3.6%; and (e) Ni / Si is greater than or equal to 1.0% but less than or equal to 3.6%. The copper alloy provided by the invention has high elasticity, high strength, high fatigability and good heat resistance, and meanwhile has good conductivity, and can be widely applied to occasions such as various elastic reeds, electric contacts, spot welding poles, anti-explosion tools, electric contact components, connecting components and the like.

Description

technical field [0001] The invention relates to a high-strength, high-elastic, stress-relaxation-resistant beryllium-free copper alloy and a preparation and processing method thereof, belonging to the field of nonferrous metal processing. Background technique [0002] With the improvement of people's living standards, the development of modern industry and the needs of national defense construction, the application range of high-strength and high-elasticity copper alloy materials is becoming wider and wider, and the demand continues to increase. High-strength and high-elasticity copper alloy materials have excellent characteristics such as high strength, good elasticity, fatigue resistance, small elastic hysteresis, and corrosion resistance. They are widely used in electronics, aerospace, instruments, meters and automatic control industries to manufacture various elastic materials. Reeds, electrical contacts, spot welding poles, explosion-proof tools, etc., and because of th...

Claims

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Application Information

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IPC IPC(8): C22C9/10C22C9/06C22C1/02C22C1/03C22F1/08
Inventor 肖翔鹏程磊黄国杰米绪军
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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