A kind of ultra-high-strength aluminum alloy wire and its production process

A technology of aluminum alloy wire and production process, which is applied in the field of metallurgy, can solve the problems that it is difficult to obtain ultra-high strength aluminum alloy wire with high strength and conductivity, high conductivity, low conductivity, etc., and achieve low solid solubility and high conductivity , high-strength effect

Active Publication Date: 2021-09-07
FAR EAST CABLE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research on ultra-high-strength aluminum alloy wire is still in its infancy, so it is difficult to guarantee the ultra-high-strength aluminum alloy wire with excellent comprehensive performance, either the strength is too high and the conductivity is low, or the conductivity is high and the strength is low. It is difficult to obtain ultra-high-strength aluminum alloy wire with high strength and electrical conductivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The ultra-high-strength aluminum alloy wire of this embodiment contains the following components by weight percentage: Zn 3.75%, Mg 1.83%, Si 0.85%, Cu 1.3%, Fe 0.3%, Ti 0.008%, B 0.01 %, the balance is Al.

[0049] The production process of the ultra-high-strength aluminum alloy wire of this embodiment includes the following steps:

[0050] S1: Melting: smelt aluminum ingots, inject them into the holding furnace, and then sequentially add zinc ingots, aluminum-copper alloy ingots, aluminum-iron alloy ingots, aluminum-silicon alloy ingots, aluminum-boron alloy ingots, magnesium ingots and aluminum-titanium alloy ingots to make aluminum alloy liquid. An aluminum ingot with an aluminum content of 99.85% is used to ensure that the component content in the aluminum alloy liquid is consistent with the chemical composition of an ultra-high-strength aluminum alloy wire in claim 1. The temperature in the holding furnace is 720°C.

[0051] Stirring: Use an automatic stirrer to...

Embodiment 2

[0067] The ultra-high-strength aluminum alloy wire of this embodiment includes the following components by weight percentage: Zn5.5%, Mg2.1%, Si0.93%, Cu1.54%, Fe0.45%, Ti0.013%, B0.57 %, the balance is Al.

[0068] The production process of the ultra-high-strength aluminum alloy wire of this embodiment includes the following steps:

[0069] S1: Melting: smelt aluminum ingots, inject them into the holding furnace, and then sequentially add zinc ingots, aluminum-copper alloy ingots, aluminum-iron alloy ingots, aluminum-silicon alloy ingots, aluminum-boron alloy ingots, magnesium ingots and aluminum-titanium alloy ingots to make aluminum alloy liquid. An aluminum ingot with an aluminum content of 99.85% is used to ensure that the component content in the aluminum alloy liquid is consistent with the chemical composition of an ultra-high-strength aluminum alloy wire in claim 1. The temperature in the holding furnace was 725°C.

[0070] Stirring: Use an automatic stirrer to stir ...

Embodiment 3

[0086] The ultra-high-strength aluminum alloy wire of this embodiment includes the following components by weight percentage: Zn7.17%, Mg2.56%, Si1.0%, Cu1.72%, Fe0.6%, Ti0.02%, B0.1 %, the balance is Al.

[0087] The production process of the ultra-high-strength aluminum alloy wire of this embodiment includes the following steps:

[0088] S1: Melting: smelt aluminum ingots, inject them into the holding furnace, and then sequentially add zinc ingots, aluminum-copper alloy ingots, aluminum-iron alloy ingots, aluminum-silicon alloy ingots, aluminum-boron alloy ingots, magnesium ingots and aluminum-titanium alloy ingots to make aluminum alloy liquid. An aluminum ingot with an aluminum content of 99.85% is used to ensure that the component content in the aluminum alloy liquid is consistent with the chemical composition of an ultra-high-strength aluminum alloy wire in claim 1. The temperature in the holding furnace is 730°C.

[0089] Stirring: Use an automatic stirrer to stir the...

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Abstract

The invention discloses an ultra-high-strength aluminum alloy wire and a production process thereof, wherein the chemical composition of the ultra-high-strength aluminum alloy wire includes the following components by weight percentage: Zn 3.75-7.17%, Mg 1.83-2.56%, Si 0.85-1.0 %, Cu 1.3‑1.72%, Fe 0.3‑0.6%, Ti 0.008‑0.02%, B 0.01‑0.1%, and the balance is Al. Zn and Mg in the formula of the present invention form MgZn 2 Strengthening phase, Si and Mg form Mg 2 The Si strengthening phase can significantly improve the strength of the aluminum alloy through the strengthening of the second phase. Cu can effectively improve the strength and conductivity of the alloy, so that the conductivity of the ultra-high-strength aluminum alloy wire is ≥45% IACS, the tensile strength is ≥625MPa, and the tensile strength is ≥625MPa. Elongation rate ≥ 8%, can be used for transmission lines with large spans and large drops, and has significant economic benefits.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to an ultra-high-strength aluminum alloy wire and a production process thereof. Background technique [0002] The most widely used in the existing overhead transmission lines is the steel-cored aluminum stranded wire, but with the advancement of technology and the needs of the development of the power industry, aluminum alloy wires have good operating results due to their superior technical performance, especially in ultra-high voltage The good use effect on the line and the long-span line has gradually been widely adopted by countries all over the world. Aluminum alloy single wire mainly includes medium-strength aluminum alloy wire, high-strength aluminum alloy wire and heat-resistant aluminum alloy wire. , the high-strength aluminum alloy wire with a strength of 350MPa is difficult to meet the design requirements. Generally, an extra-high-strength steel core is used as the reinforcing c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10C22C1/03C22C1/06C22F1/053C21D9/00C21D9/52B22D11/045B22D1/00B22D43/00B21C37/04
CPCB21C37/04B22D1/002B22D11/003B22D11/045B22D43/00C21D9/0075C21D9/525C22C1/026C22C1/03C22C1/06C22C21/10C22F1/002C22F1/053
Inventor 张孝雷徐静夏霏霏蒋达周锋
Owner FAR EAST CABLE
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