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A copper-silver composite wire and its preparation method

A composite material, copper-silver technology, used in conductive materials, conductive materials, metal/alloy conductors, etc., can solve the problems of difficulty in ensuring the quality of the casting parent material and the tensile strength of the wire, so as to improve the quality of the ingot and avoid the temperature The effect of large fluctuations and high tensile strength

Active Publication Date: 2021-08-03
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods are difficult to guarantee the quality of the casting base metal
A reasonable proportion of copper-silver alloy can obtain wires with good mechanical properties. The tensile strength of copper-silver alloy in existing products is 450-800 MPa, and the conductivity is about 75-90% IACS. How to further improve the conductivity under the premise of ensuring the conductivity? Improving the tensile strength of the wire is also one of the difficulties

Method used

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  • A copper-silver composite wire and its preparation method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0026] A copper-silver composite wire provided in this embodiment includes the following ratios in parts by weight. The raw materials include: 4 parts of silver powder, 20 parts of copper-silver-strontium alloy powder, and 96 parts of copper powder. The mass percent content of silver in the copper-silver-strontium alloy powder is 4%, the content of strontium is 15ppm, and the balance is copper; After smelting, it is then atomized under an argon atmosphere.

[0027] Its preparation method comprises the following steps:

[0028] S1. Prepare wire raw materials: according to parts by weight, 4 parts of silver powder, 20 parts of copper-silver-strontium alloy powder, and 96 parts of copper powder are respectively weighed for silver powder, copper-silver-strontium alloy powder and copper powder, and set aside; the purity of copper is greater than 99.9 %, the purity of the silver is greater than 99.9%

[0029] S2, preparation of composite powder: the silver powder and copper powder...

Embodiment 2

[0035] A copper-silver composite lead wire proposed in this embodiment comprises the following parts by weight, and the raw materials include: 2 parts of silver powder, 10 parts of copper-silver-strontium alloy powder, and 98 parts of copper powder. The mass percentage of silver in copper-silver-strontium alloy powder is 2%, the content of strontium is 15ppm, and the balance is copper; After smelting, it is then atomized under an argon atmosphere.

[0036] Its preparation method comprises the following steps:

[0037] S1. Prepare wire raw materials: according to parts by weight, 2 parts of silver powder, 10 parts of copper-silver-strontium alloy powder, and 98 parts of copper powder are respectively weighed for silver powder, copper-silver-strontium alloy powder and copper powder, and set aside; the purity of copper is greater than 99.9 %, the purity of the silver is greater than 99.9%, and the content of strontium in the copper-silver-strontium alloy powder is 15ppm;

[003...

Embodiment 3

[0044] A copper-silver composite lead wire proposed in this embodiment comprises the following parts by weight. The raw materials include: 8 parts of silver powder, 30 parts of copper-silver-strontium alloy powder, and 92 parts of copper powder. The mass percent content of silver in the copper-silver-strontium alloy powder is 8%, the content of strontium is 15ppm, and the balance is copper; After smelting, it is then atomized under an argon atmosphere.

[0045] Its preparation method comprises the following steps:

[0046] S1. Prepare wire raw materials: in parts by weight, 8 parts of silver powder, 30 parts of copper-silver strontium alloy powder, and 92 parts of copper powder, weigh the above raw materials and set aside; the purity of copper is greater than 99.9%, and the purity of silver is greater than 99.9 %;

[0047] S2, preparation of composite powder: the silver powder and copper powder weighed in step S1 are added in the ball mill, and a ball milling aid of 1.2% of ...

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Abstract

The invention discloses a copper-silver composite wire and a preparation method thereof. The raw materials include: 2-10 parts of silver powder, 5-50 parts of copper-silver-strontium alloy powder, 90-98 parts of copper powder, silver powder + copper The total number of parts of the powder is 100 parts; wherein: in the copper-silver-strontium alloy powder, the content of silver is 2-10 wt%, the content of strontium is 5-50 ppm, and the balance is copper. In the preparation method of the present invention, anhydrous ethanol, colloidal silicon dioxide and colloidal graphite are used to form a ball milling aid, which ensures the effect of powder ball milling on the one hand, and on the other hand, the graphite remaining in the pressed billet can During the protective smelting process, the residual oxygen is further removed to improve the purity of the material, while the silicon dioxide floats on the surface of the melt, which will not cause the introduction of impurities.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a copper-silver composite wire and a preparation method thereof. Background technique [0002] High-strength and high-conductivity copper alloy wire (conductor) is a key material in many high-tech fields. wire etc. Silver-copper alloy wire and ultra-fine wire are the key materials for micro-motors used in various cutting-edge technology industries such as intelligent robots, such as micro-motor coil windings, electromagnetic wire cores, etc. At present, the diameter of wire is generally below 80 μm, and its forming process The technical difficulty is high, and the requirements for the base material blank are extremely high. CN1811996 discloses a copper-silver alloy wire with low silver content (0.08-0.12%) and its production method. Silver grains or silver ingots are used as raw materials, and copper-silver alloy is produced by continuous casting and rolling. CN1043536...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C1/02B22F9/04H01B1/02
CPCB22F9/04B22F2009/042B22F2009/043C22C1/02C22C9/00H01B1/026
Inventor 肖柱方梅李周龚深姜雁斌
Owner CENT SOUTH UNIV