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High-conductivity bend-resistant copper alloy wire for transmission and preparation method thereof

A copper alloy wire and bending-resistant technology, which is applied in the field of high-conductivity bending-resistant copper alloy wire for transmission and its preparation, can solve problems such as burning of alloy elements, low yield of connecting cables, and reduced life of graphite crystallizers. The effect of meeting the requirements of use, high conductivity and consistency

Active Publication Date: 2016-09-28
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the trend of high performance, multi-function, miniaturization and portable development of electronic devices, the requirements for connecting cables are constantly increasing, including: connecting cables with high strength and high conductivity, and connecting cables with a certain bending life etc., which makes the electronic cables using ordinary copper wires as conductors unable to meet the requirements of the development of high-performance electronic devices. The copper alloy wires currently used in electronic cables have the following two problems: 1. Ordinary high-strength copper The strength and conductivity of alloy wires are difficult to meet the requirements at the same time. The strength of some copper alloy wires can meet the requirements of use, but their conductivity is too low, and the strength of high-conductivity copper alloy wires is insufficient; 2. The number of bending resistance of ordinary copper alloy wires is insufficient , which reduces the life of the connecting cable; 3. The performance consistency of the copper alloy wire is poor, resulting in a low yield of the connecting cable
[0003] In addition, most of the existing alloy materials are prepared by using non-vacuum horizontal continuous casting machines, and this type of continuous casting machines has the following disadvantages: 1. Because it is a non-vacuum system, it cannot melt easily oxidized metals, and its open The smelting system will cause oxidation and pollution during the metal or alloy smelting process, which cannot ensure the stability of the alloy composition and reduces the life of the graphite crystallizer; 2. The stirring process of the non-vacuum continuous casting machine is mostly mechanical stirring. Splash is easy to cause injury to the operator; 3. Non-vacuum continuous casting machine is easy to cause alloy element burning when adding alloy elements, and the uniformity of alloy material components cannot be guaranteed; 4. Non-vacuum continuous casting machine is easy to cause grain size of cast rod Coarse unevenness and shrinkage cavity, shrinkage porosity casting defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The manufacturing method of the highly conductive and bend-resistant copper alloy wire for transmission is as follows:

[0013] (1) Smelting and continuous casting of copper alloy wire billets: a. Manufacture of Cu / Co master alloy: Layer Cu with mass fraction of 80% and Co with mass fraction of 20% are put into the boron nitride / alumina crucible of vacuum furnace, and the boron nitride / alumina crucible with middle opening is placed on the crucible. Alumina crucible cover, vacuuming the hearth of the vacuum furnace, the vacuum degree is higher than 5.0×10 -2 After Pa, start to heat up to 1550°C, where the heating rate is 20°C / min when the temperature is lower than 800°C, and 30°C / min when the temperature is higher than 800°C, until the Cu / Co alloy is completely dissolved and the molten metal becomes clear After that, the vacuum was stopped, and Ar was introduced into the hearth of the vacuum furnace. 2 to 0.05Mpa, shake the crucible and stir for 5 minutes, stop heating...

Embodiment 2

[0015] The manufacturing method of the highly conductive and bend-resistant copper alloy wire for transmission is as follows:

[0016] (1) Smelting and continuous casting of copper alloy wire billets: a. Manufacture of Cu / Co master alloy: Layer Cu with mass fraction of 80% and Co with mass fraction of 20% are put into the boron nitride / alumina crucible of vacuum furnace, and the boron nitride / alumina crucible with middle opening is placed on the crucible. Alumina crucible cover, vacuuming the hearth of the vacuum furnace, the vacuum degree is higher than 5.0×10 -2 After Pa, start to heat up to 1700°C, where the heating rate is 30°C / min when the temperature is lower than 800°C, and 40°C / min when the temperature is higher than 800°C, until the Cu / Co alloy is completely dissolved and the molten metal becomes clear After that, the vacuum was stopped, and Ar was introduced into the hearth of the vacuum furnace. 2 to 0.2Mpa, shake the crucible and stir for 7 minutes, stop heating,...

Embodiment 3

[0018] The manufacturing method of the highly conductive and bend-resistant copper alloy wire for transmission is as follows:

[0019] (1) Smelting and continuous casting of copper alloy wire billets: a. Manufacture of Cu / Co master alloy: Layer Cu with mass fraction of 80% and Co with mass fraction of 20% are put into the boron nitride / alumina crucible of vacuum furnace, and the boron nitride / alumina crucible with middle opening is placed on the crucible. Alumina crucible cover, vacuuming the hearth of the vacuum furnace, the vacuum degree is higher than 5.0×10 -2 After Pa, start to heat up to 1800°C, where the heating rate is 40°C / min when the temperature is lower than 800°C, and 50°C / min when the temperature is higher than 800°C, until the Cu / Co alloy is completely dissolved and the molten metal becomes clear After that, the vacuum was stopped, and Ar was introduced into the hearth of the vacuum furnace. 2 to 0.5Mpa, shake the crucible and stir for 10 minutes, stop heating...

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PUM

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Abstract

The invention discloses a high-conductivity bend-resistant copper alloy wire for transmission and a preparation method thereof. The preparation method comprises the following steps: (1) performing smelting and continuous-casting on a copper alloy wire blank; (2) drawing a silver alloy rod; (3) performing intermediate heat treatment on a silver alloy wire; and (4) drawing a copper alloy wire subjected to intermediate heat treatment by a wire drawing machine into a copper alloy wire with the diameter of 0.5-1.0 mm. According to the preparation method of the high-conductivity bend-resistant copper alloy wire for transmission, alloy components are optimized to improve the bend resistance of the copper alloy wire, high conductivity and consistency are ensured, and the use requirements of high-performance electronic devices are satisfied.

Description

technical field [0001] The invention belongs to the field of wire and cable conductor materials, and mainly relates to a high-conductivity bending-resistant copper alloy wire for transmission and a preparation method thereof. Background technique [0002] With the trend of high performance, multi-function, miniaturization and portable development of electronic devices, the requirements for connecting cables are constantly increasing, including: connecting cables with high strength and high conductivity, and connecting cables with a certain bending life etc., which makes the electronic cables using ordinary copper wires as conductors unable to meet the requirements of the development of high-performance electronic devices. The copper alloy wires currently used in electronic cables have the following two problems: 1. Ordinary high-strength copper The strength and conductivity of alloy wires are difficult to meet the requirements at the same time. The strength of some copper al...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C1/03C22F1/08B22D11/115B22D11/113B21C1/02B21C37/04
CPCB21C1/02B21C37/047B22D11/113B22D11/115C22C1/03C22C9/00C22F1/08
Inventor 曹军
Owner HENAN POLYTECHNIC UNIV