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Cu-Cr-Zr-Ni-Al copper alloy, Cu-Cr-Zr-Ni-Al copper alloy wire rod and preparation method thereof

A technology of copper alloy and wire rod, applied in the field of wire rod and its preparation, Cu-Cr-Zr-Ni-Al copper alloy, can solve the problem that the conductivity and strength of copper wire cannot reach high standards at the same time, and the strengthening effect of alloy elements is not obvious. Problems such as poor corrosion resistance

Pending Publication Date: 2018-03-23
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But there are still some problems: a small amount of alloying elements has no obvious strengthening effect; a large amount of alloying elements will deteriorate the electrical conductivity of the alloy; Difference

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  • Cu-Cr-Zr-Ni-Al copper alloy, Cu-Cr-Zr-Ni-Al copper alloy wire rod and preparation method thereof
  • Cu-Cr-Zr-Ni-Al copper alloy, Cu-Cr-Zr-Ni-Al copper alloy wire rod and preparation method thereof
  • Cu-Cr-Zr-Ni-Al copper alloy, Cu-Cr-Zr-Ni-Al copper alloy wire rod and preparation method thereof

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[0031] The present application also provides a method for preparing a Cu-Cr-Zr-Ni-Al copper alloy wire, comprising the following steps in sequence: smelting, vacuum horizontal continuous casting, primary drawing, solution treatment, secondary drawing, One-time aging treatment, three-time drawing, and two-time aging treatment.

[0032] In one embodiment of the present application, the above-mentioned Cu-Cr-Zr-Ni-Al copper alloy wire preparation method comprises the following steps:

[0033] 1) Melting: Use a vacuum induction melting furnace to melt the pure copper rod, raise the temperature to 1320±10°C to ensure that the pure copper rod is melted, then add pure nickel, pure aluminum, Cu-Cr master alloy and Cu-Zr master alloy, and then wait for complete melting Then lower it to 1250±10°C and keep it warm for more than 30 minutes, and keep the vacuum below 1Pa during the whole melting process;

[0034] 2) Vacuum horizontal continuous casting: use graphite crystallizer for horiz...

Embodiment 1

[0047] A Cu-Cr-Zr-Ni-Al copper alloy wire, the composition of the copper alloy wire is shown in Example 1 in Table 1.

[0048] The preparation method of the Cu-Cr-Zr-Ni-Al copper alloy wire rod in the present embodiment comprises the following steps:

[0049] 1) Melting: Use a vacuum induction melting furnace to melt the pure copper rod, raise the temperature to 1320±10°C to ensure that the pure copper rod is melted, then add pure nickel, pure aluminum, Cu-Cr master alloy and Cu-Zr master alloy, and then wait for complete melting Then lower it to 1250±10°C and keep it warm for more than 30 minutes, and keep the vacuum below 1Pa during the whole melting process;

[0050] 2) Vacuum horizontal continuous casting: use graphite crystallizer for horizontal continuous casting. During the horizontal continuous casting process, the temperature of the melt in the holding furnace is 1250-1300°C, the drawing speed is 10mm / s, and the pitch is 4mm / time. The stop time is 0.4s / time, the cool...

Embodiment 2

[0059] A Cu-Cr-Zr-Ni-Al copper alloy wire, the composition of the copper alloy wire is shown in Example 2 in Table 1.

[0060] The preparation method of the Cu-Cr-Zr-Ni-Al copper alloy wire rod in the present embodiment comprises the following steps:

[0061] 1) Melting: Use a vacuum induction melting furnace to melt the pure copper rod, raise the temperature to 1320±10°C to ensure that the pure copper rod is melted, then add pure nickel, pure aluminum, Cu-Cr master alloy and Cu-Zr master alloy, and then wait for complete melting Then lower it to 1250±10°C and keep it warm for more than 30 minutes, and keep the vacuum below 1Pa during the whole melting process;

[0062] 2) Vacuum horizontal continuous casting: use graphite crystallizer for horizontal continuous casting. During the horizontal continuous casting process, the temperature of the melt in the holding furnace is 1250-1300°C, the drawing speed is 10mm / s, and the pitch is 4.5mm / time , the stop time is 0.45s / time, the ...

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Abstract

The invention provides a Cu-Cr-Zr-Ni-Al copper alloy. The Cu-Cr-Zr-Ni-Al copper alloy comprises, by mass, 0.10%-0.70% of Cr, 0,05%-0.50% of Zr, 0.50%-2.00% of Ni, 0.10%-0.50% of A1, the balance Cu andinevitable impurities. The invention further discloses a Cu-Cr-Zr-Ni-Al copper alloy wire rod. The invention further discloses a preparation method of the Cr-Zr-Ni-A1 copper alloy wire rod. The tensile strength of the copper alloy wire rod can reach 800MPa-950MPa, the elongation rate is larger than 5%, the electrical conductivity is 34%-48% IACS, the softening temperature is 550 DEG C-600 DEG C,and the electric arc erosion loss is within 50 mg.

Description

technical field [0001] The invention relates to the technical field of copper alloy materials, in particular to a Cu-Cr-Zr-Ni-Al copper alloy, a wire rod and a preparation method thereof. Background technique [0002] Copper alloys are widely used in various fields due to their excellent comprehensive properties such as strength, electrical conductivity, and wear resistance, such as lead frames, welding electrodes, switch contacts, and empty wires for electric trains. At present, high-strength copper alloys mainly include beryllium copper, titanium copper, etc., but their electrical conductivity is low. Although the electrical conductivity of copper-chromium alloys can reach 70% or higher, their strength generally does not exceed 800MPa. It has always been a technical problem how to increase the strength of copper alloy while maintaining a small decrease in its electrical conductivity. [0003] At present, in industrial production, the strength of copper alloys is mainly in...

Claims

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Application Information

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IPC IPC(8): C22C9/06C22C9/00C22C1/03C22F1/08
CPCC22C9/06C22C1/03C22C9/00C22F1/002C22F1/08
Inventor 肖翔鹏陈金水王俊峰许海张建波
Owner JIANGXI UNIV OF SCI & TECH
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