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Cu-Ni-Si-Co-Ti-RE copper alloy and preparation method thereof

A cu-ni-si-co-ti-re, copper alloy technology, applied in the field of copper alloy materials, can solve the problems of high environmental protection requirements, long production process flow, high production cost, reduce macro and micro segregation, The effect of reducing the depth of the liquid cavity and improving the shape

Active Publication Date: 2017-07-28
JIANGXI UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because beryllium bronze has relatively high environmental protection requirements, long production process and high energy consumption, the production cost is 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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  • Cu-Ni-Si-Co-Ti-RE copper alloy and preparation method thereof
  • Cu-Ni-Si-Co-Ti-RE copper alloy and preparation method thereof
  • Cu-Ni-Si-Co-Ti-RE copper alloy and preparation method thereof

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preparation example Construction

[0052] The preparation method of above-mentioned Cu-Ni-Si-Co-Ti-RE copper alloy specifically comprises the following steps:

[0053] (1) Melting and casting: first melt Cu, Ni, Co and Ti under the condition of covering calcined charcoal and electrode graphite powder, then add Si and 25% of all rare earth copper alloys, then remove slag, then heat up, and then degas , and then add 75% of the total rare earth copper alloy, then sample analysis, the temperature is controlled at 1240±10°C, then the composition is adjusted, and then the drawing is cast, and the temperature is controlled at 1215±10°C;

[0054] (2) Hot rolling: the hot rolling temperature is 800~1000℃, and the hot rolling time is 1~10h;

[0055] (3) Spray treatment: the finishing temperature of hot rolling is kept above 700°C;

[0056] (4) Face milling: the milling amount of the upper knife is 0.5mm, and the milling amount of the lower knife is 0.6mm;

[0057] (5) Rough rolling: the reduction rate of rough rolling ...

Embodiment 1

[0068] The alloy of the present invention is smelted using the following raw materials: electrolytic copper, pure nickel, pure cobalt, pure titanium, pure silicon, rare earth copper alloy; the composition of the alloy is shown in Example 1 of Table 1.

[0069] (1) Melting and casting: (bright wire copper 30% + recycled copper 70%) + nickel + cobalt + titanium + covering (calcined charcoal + electrode graphite powder) → melting + silicon + 25% rare earth copper alloy → slag removal → heating ( 1220°C)→degassing (10min)+75% rare earth copper alloy→sampling analysis (temperature control at 1240±10°C)→composition adjustment→drawing (temperature control at 1215±10°C);

[0070] (2) Hot rolling: the hot rolling temperature is 900°C, and the holding time is 6h;

[0071] (3) Spray treatment: the finishing temperature of hot rolling is 710°C;

[0072] (4) Face milling: upper knife 0.5mm, lower knife 0.6mm;

[0073] (5) Rough rolling: the reduction rate is 50%;

[0074] (6) Bell jar a...

Embodiment 2

[0083] The alloy of the present invention is smelted using the following raw materials: electrolytic copper, pure nickel, pure cobalt, pure titanium, pure silicon, rare earth copper alloy; the composition of the alloy is shown in Example 2 of Table 1.

[0084] (1) Melting and casting: (bright wire copper 30% + recycled copper 70%) + nickel + cobalt + titanium + covering (calcined charcoal + electrode graphite powder) → melting + silicon + 25% rare earth copper alloy → slag removal → heating ( 1220°C)→degassing (10min)+75% rare earth copper alloy→sampling analysis (temperature control at 1240±10°C)→composition adjustment→drawing (temperature control at 1215±10°C);

[0085] (2) Hot rolling: the hot rolling temperature is 920°C, and the holding time is 6h;

[0086] (3) Spray treatment: the finishing temperature of hot rolling is 700°C;

[0087] (4) Face milling: upper knife 0.5mm, lower knife 0.6mm;

[0088] (5) Rough rolling: the reduction rate is 60%;

[0089] (6) Bell jar ann...

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Abstract

The invention discloses a Cu-Ni-Si-Co-Ti-Re copper alloy. The Cu-Ni-Si-Co-Ti-Re copper alloy comprises the following components in percentage by weight: 0.5%-2.0% of Ni, 0.2%-0.9% of Si, 0.5%-2.0% of Co, 0.1%-0.5% of Ti, 0.05%-0.2% of RE and the balance Cu, wherein RE is one or more of Ce, La and Y. The Cu-Ni-Si-Co-Ti-Re copper alloy has tensile strength sigma b which can reach 800-1000 MPa, plastic ductility sigma of 3-10%, electrical conductivity of 45%-55% of IACS, anti-stress-relaxation property greater than or equal to 80% (working for 1000 hours at a temperature of 200 DEG C). The invention further discloses a preparation method for the Cu-Ni-Si-Co-Ti-Re copper alloy.

Description

technical field [0001] The invention relates to the technical field of copper alloy materials, in particular to a Cu-Ni-Si-Co-Ti-RE copper alloy and a preparation method thereof. Background technique [0002] High-strength and high-elasticity copper alloy has excellent characteristics such as high strength, good elasticity, fatigue resistance, small elastic hysteresis, and corrosion resistance. It is widely used to manufacture electronics, electricity, communications, instruments, meters, telecommunications, light industry, machinery, and chemical industry. , In the coal industry, it is widely used in the manufacture of various elastic reeds, electrical contacts, spot welding poles, explosion-proof tools, etc. And because of its stable performance and long service life, it is widely used in special components in important military sectors such as aviation, aerospace, weapons, ships, and radar systems, mainly electrical contact devices, connector components and relay devices....

Claims

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Application Information

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IPC IPC(8): C22C9/06C22C1/03C22F1/08
CPCC22C1/03C22C9/06C22F1/08
Inventor 肖翔鹏姜业欣张西军张县委田英明朱清涛郑朋艳
Owner JIANGXI UNIV OF SCI & TECH
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