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Preparation method of copper-silver alloy wire

A copper-silver alloy and wire technology, applied in the direction of manufacturing tools, heat treatment equipment, furnaces, etc., can solve the problems of reducing the electrical conductivity of the matrix, increasing the content of solute atoms, and reducing the electrical conductivity of materials, so as to improve electrical conductivity, improve mechanical properties, Achieve the effect of alloy strength

Active Publication Date: 2022-05-31
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] For copper-silver alloys, cold deformation and element addition are the traditional methods to improve the strength of the alloy, but the traditional strengthening methods are all at the expense of the electrical conductivity of the material. The increase in the strength of the alloy is accompanied by a decrease in the electrical conductivity of the alloy, that is, Inverse strength-conductivity relationship
For example, adding alloying elements will increase the content of solute atoms in the copper matrix, thereby reducing the conductivity of the matrix; deformation will introduce a large number of dislocations into the alloy and increase the interface density, thereby reducing the conductivity of the material

Method used

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  • Preparation method of copper-silver alloy wire
  • Preparation method of copper-silver alloy wire
  • Preparation method of copper-silver alloy wire

Examples

Experimental program
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Effect test

Embodiment 1

[0057] A high-strength and high-conductivity copper-silver alloy material, its composition includes Cu, Ag, Sc, La elements and unavoidable impurities, and the mass ratio of each composition is as follows: Ag element is 20 wt.%, La element is 0.02wt .%, the Sc element is 0.03 wt.%, the total mass of unavoidable impurities is 0.05 wt.%, the balance is copper, and the mass ratio of Sc to La is 1.5. The preparation method of above-mentioned copper-silver alloy, its concrete processing step comprises:

[0058] Step 1, according to the above-mentioned component ratio, put pure copper, pure silver, pure scandium with a mass purity of 99.95%, and a copper-lanthanum master alloy with a mass fraction of lanthanum of 10wt.% into a graphite crucible, and put it into a vacuum induction melting inside the furnace. First, control the vacuum degree in the vacuum induction melting furnace at 8.0×10 -2 Below Pa; then pass argon into the melting furnace. Under the protection of argon atmosph...

Embodiment 2

[0070] A high-strength and high-conductivity copper-silver alloy material, its composition includes Cu, Ag, Sc, La elements and unavoidable impurities, and the mass ratio of each composition is as follows: Ag element is 24 wt.%, La element is 0.12wt .%, the Sc element is 0.1 wt.%, the total mass of unavoidable impurities is 0.05 wt.%, the balance is copper, and the mass ratio of Sc to La is 0.83. The preparation method of above-mentioned copper-silver alloy, its concrete processing step comprises:

[0071] Step 1, according to the above-mentioned component ratio, put pure copper, pure silver, pure scandium with a mass purity of 99.95%, and a copper-lanthanum master alloy with a mass fraction of lanthanum of 10wt.% into a graphite crucible, and put it into a vacuum induction melting inside the furnace. First, control the vacuum degree in the vacuum induction melting furnace at 8.0×10 -2 Below Pa; then pass argon into the melting furnace. Under the protection of argon atmosph...

Embodiment 3

[0083] A high-strength and high-conductivity copper-silver alloy material, its composition includes Cu, Ag, Sc, La elements and unavoidable impurities, and the mass ratio of each composition is as follows: Ag element is 25 wt.%, La element is 0.1wt .%, the Sc element is 0.05 wt.%, the total mass of unavoidable impurities is 0.05 wt.%, the balance is copper, and the mass ratio of Sc to La is 0.5. The preparation method of above-mentioned copper-silver alloy, its concrete processing step comprises:

[0084] Step 1, according to the above-mentioned component ratio, put pure copper, pure silver, pure scandium with a mass purity of 99.95%, and a copper-lanthanum master alloy with a mass fraction of lanthanum of 10wt.% into a graphite crucible, and put it into a vacuum induction melting inside the furnace. First, control the vacuum degree in the vacuum induction melting furnace at 8.0×10 -2 Below Pa; then pass argon into the smelting furnace. Under the protection of argon atmosph...

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Abstract

The invention discloses a preparation method of a copper-silver alloy wire. A copper-silver alloy comprises the following components in percentage by weight: 18-26% of Ag, 0.02-0.25% of La, a mass ratio of Sc to La being 0.5-1.5, and the balance of Cu. And drawing for a plurality of passes to obtain a wire rod finished product. According to the copper-silver alloy wire, only two rare earth elements Sc and La are added, the mass ratio of Sc to La is controlled to be 0.5-1.5, and after the strengthening treatment process, the copper-silver alloy wire with the room temperature tensile strength reaching 1050-1520 MPa, the electric conductivity reaching 75-87% IACS and the electrical resistivity lower than 1.982-2.30 mu omega.cm can be obtained; when the environment temperature is-196 DEG C, the low-temperature tensile strength of the alloy is 1450-1860 MPa, the low-temperature resistivity is 0.70-0.87 mu omega.cm, and the comprehensive performance is excellent.

Description

technical field [0001] The invention belongs to the field of nonferrous metal processing, and relates to a high-strength, high-conductivity copper-silver alloy wire and a preparation method thereof. Background technique [0002] Copper-silver alloys have excellent electrical conductivity and mechanical properties, and are often used as magnet materials and electrical contact materials for high-intensity magnetic fields, and are widely used in high-intensity magnetic fields, electronics and electrical fields. In order to adapt to the complexity of the service environment, higher requirements are put forward for the strength and electrical conductivity of Cu-Ag alloy materials. In the field of strong magnetic fields, in order to achieve a strong magnetic field with a strength of 100T, the tensile strength of the magnetic field magnet material is required to be > 1 GPa, and the electrical conductivity > 70% IACS. [0003] For copper-silver alloys, cold deformation and el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/03C22F1/08C21D9/00C21D9/52B23P15/00
CPCC22C9/00C22C1/03C22F1/002C22F1/08B23P15/00C21D9/0081C21D9/0075C21D9/525
Inventor 谢伟滨谢明旺邓永芳陈辉明汪航杨斌周鹏飞
Owner JIANGXI UNIV OF SCI & TECH
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