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A kind of high-performance copper wire and its preparation method

A copper wire, high-performance technology, applied in conductors, conductive materials, conductive materials, etc., can solve the problems of low strength and reduced electrical conductivity, and achieve the effects of low electrical conductivity, reduced oxygen content, and increased recrystallization temperature

Active Publication Date: 2018-09-14
安徽晋源铜业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current main problem of copper wire is its low strength. It is necessary to greatly increase its strength by adding alloy elements. For example, although the strength of the Cu-Ni-Si copper alloy material developed in Japan has reached more than 550MPa, the alloy strengthening is often accompanied by A decrease in electrical conductivity, which is the most important performance indicator for copper wires

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of preparation method of high-performance copper wire that the present invention proposes, comprises the steps:

[0024] S1. Add electrolytic copper and charcoal into the smelting furnace to heat up and melt to obtain copper liquid, and pass N into the copper liquid 2 , N 2 The flow rate is 0.2m 3 / h, the aeration time is 45min, wherein the charcoal is calcined charcoal, which is obtained by heating charcoal with a particle size of 20mm to 700°C at a heating rate of 20°C under the protection of an inert gas, and then calcining it for 5h. , and the amount of charcoal is 0.4% of the mass of electrolytic copper;

[0025] S2. Add copper-chromium master alloy to the copper liquid obtained in S1, then add zirconium wire, magnesium strip, pure tellurium, pure arsenic and rare earth metals lanthanum and yttrium, heat up to 1190°C, and electromagnetically stir until the melt composition is uniform to obtain copper Alloy melt;

[0026] S3, introducing the copper alloy ...

Embodiment 2

[0029] A kind of preparation method of high-performance copper wire that the present invention proposes, comprises the steps:

[0030] S1. Add electrolytic copper and charcoal into the smelting furnace to heat up and melt to obtain copper liquid, and then pass Ar into the copper liquid, and the flow rate of Ar is 0.6m 3 / h, the aeration time is 25min, wherein the charcoal is calcined charcoal, which is obtained by heating charcoal with a particle size of 40mm under the protection of an inert gas at a heating rate of 15°C to 800°C, and heat-preserving and calcining for 3h. , and the amount of charcoal is 0.8% of the mass of electrolytic copper;

[0031] S2. Add copper-chromium master alloy to the copper liquid obtained in S1, then add zirconium wire, magnesium bar, pure tellurium, pure arsenic and rare earth metals lanthanum and yttrium, heat up to 1210°C, and electromagnetically stir until the melt composition is uniform to obtain copper Alloy melt;

[0032] S3, introducing th...

Embodiment 3

[0035] A kind of preparation method of high-performance copper wire that the present invention proposes, comprises the steps:

[0036] S1. Add electrolytic copper and charcoal into the smelting furnace to heat up and melt to obtain copper liquid, and pass N into the copper liquid 2 +Ar mixed gas, N 2 The flow rate of the mixed gas of +Ar is 0.4m 3 / h, the aeration time is 35min, wherein the charcoal is calcined charcoal, which is obtained by heating charcoal with a particle size of 30mm to 750°C at a heating rate of 18°C ​​under the protection of an inert gas, and heat-preserving and calcining for 4h. , and the amount of charcoal is 0.6% of the mass of electrolytic copper;

[0037] S2. Add copper-chromium master alloy to the copper liquid obtained in S1, then add zirconium wire, magnesium bar, pure tellurium, pure arsenic and rare earth metals lanthanum and yttrium, heat up to 1200°C, stir electromagnetically until the melt composition is uniform, and obtain copper Alloy me...

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Abstract

The invention discloses a preparation method of a high-performance copper wire. The preparation method includes the following steps that S1, electrolytic copper and charcoal are added in a smelting furnace, copper liquid is obtained, and inert gas is introduced; S2, a copper and chromium intermediate alloy is added into the copper liquid, then zirconium wires, magnesium bars, pure tellurium, pure arsenic and rare earth metal lanthanum and yttrium are added into the copper liquid, and copper alloy melt is obtained; S3, it is detected that components of the copper alloy melt include 0.45%-0.55% of Cr, 0.3%-0.4% of Zr, 0.1%-0.15% of Te, 0.07%-0.12% of La, 0.05%-0.09% of Y, 0.02%-0.04% of As, smaller than or equal to 0.10% of Mg and the balance Cu; and S4, vacuum up-drawing is performed in the copper alloy melt, and after continuous extruding, the high-performance copper wire is obtained. The electrical conductivity of the copper wire prepared through the preparation method reaches 95% IACS or above, and the tensile strength also reaches 550 MPa or above.

Description

technical field [0001] The invention relates to the technical field of electrical copper, in particular to a high-performance copper wire and a preparation method thereof. Background technique [0002] With the development of the electrical industry, the market demand for cables, wires, switches and copper wires for power supply and distribution equipment has increased rapidly. The reason why copper wire can attract attention and be promoted is inseparable from its high electrical conductivity and high thermal conductivity. With the development of integrated circuits in the direction of high density, multi-function, miniaturization, and low cost, especially the packaging form is changed from traditional The ceramic encapsulation of advanced ceramics is changed to the plastic encapsulation, and the copper wire that matches with the plastic encapsulation will be of great use. [0003] The current main problem of copper wire is its low strength. It is necessary to greatly incr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C1/03H01B1/02
CPCC22C1/03C22C9/00H01B1/026
Inventor 潘加明
Owner 安徽晋源铜业有限公司
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