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A kind of high-conductivity heat-resistant al-zr-er alloy wire material and preparation method thereof

A technology of alloy wire and high conductivity, which is applied in the field of aluminum alloys, can solve problems such as difficult control of heat treatment and preparation process, unsuitable for mass promotion and application, complex ingot preparation process, etc., and achieves low solid solubility and improved Strength and heat resistance, the effect of simple alloy composition

Active Publication Date: 2021-08-27
CHINALCO MATERIALS APPL RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned patented alloys often add multi-component rare earth elements Er, Y, etc. and noble metal elements Sc, the ingot preparation process is complicated, the heat treatment and preparation process is difficult to control, and the cost of the alloy is high, which is not suitable for industrialization and mass application.

Method used

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  • A kind of high-conductivity heat-resistant al-zr-er alloy wire material and preparation method thereof
  • A kind of high-conductivity heat-resistant al-zr-er alloy wire material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0039] Using industrial pure aluminum ingots with a purity greater than 99.7% (with Fe ≤ 0.15%, Si ≤ 0.05%) as raw materials, first put industrial pure aluminum into a furnace to melt, keep the alloy liquid at 750°C, and add aluminum-boron intermediate alloy for boron treatment. After the boridation treatment, let it stand still and convert the aluminum water into a converter, then add aluminum-zirconium master alloy and aluminum-erbium master alloy for alloying, and its composition and weight percentage are: Zr 0.05%; Er 0.1%; B 0.02%; Fe 0.128 %; Si 0.032%; (V+Ti+Cr+Mn) 0.01%; aluminum is the balance. After the master alloy is melted, the alloy melt is lowered to 730°C for heat preservation, followed by stirring, refining, slag removal and standing, and the casting temperature is 690°C. The heat-resistant aluminum alloy conductor material was obtained by continuous casting and rolling, and the cooling rate of the ingot was 10°C / s. The rolling temperature of the slab is 530...

Embodiment 2

[0041] Using industrial pure aluminum ingots with a purity greater than 99.7% (with Fe ≤ 0.15%, Si ≤ 0.05%) as raw materials, first put industrial pure aluminum into a furnace to melt, keep the alloy liquid at 760°C, and add aluminum-boron intermediate alloy for boron treatment. After the boridation treatment, let it stand still and convert the aluminum water into a converter, then add aluminum-zirconium master alloy and aluminum-erbium master alloy for alloying, and its composition and weight percentage are: Zr 0.08%; Er 0.1%; B 0.038%; Fe 0.13 %; Si 0.038%; (V+Ti+Cr+Mn) 0.008%; aluminum is the balance. After the master alloy is melted, the alloy melt is lowered to 730°C for heat preservation, followed by stirring, refining, slag removal, and standing, and the casting temperature is 720°C. The heat-resistant aluminum alloy conductor material was obtained by continuous casting and rolling, and the cooling rate of the ingot was 10°C / s. The rolling temperature of the casting s...

Embodiment 3

[0043] Using industrial pure aluminum ingots with a purity greater than 99.7% (with Fe ≤ 0.15%, Si ≤ 0.05%) as raw materials, first put industrial pure aluminum into a furnace to melt, keep the alloy liquid at 755°C, and add aluminum-boron intermediate alloy for boron processing. After the boridation treatment, let it stand still and convert the aluminum water into a converter, then add aluminum-zirconium master alloy and aluminum-erbium master alloy for alloying, and its composition and weight percentage are: Zr 0.05%; Er 0.15%; B 0.032%; Fe 0.125 %; Si 0.04%; (V+Ti+Cr+Mn) 0.005%; aluminum is the balance. After the master alloy is melted, the alloy melt is lowered to 730°C for heat preservation, followed by stirring, refining, slag removal, and standing, and the casting temperature is 700°C. The heat-resistant aluminum alloy conductor material was obtained by continuous casting and rolling, and the cooling rate of the ingot was 10°C / s. The rolling temperature of the slab is...

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Abstract

The invention provides a high-conductivity heat-resistant Al-Zr-Er alloy wire material, the alloy contains the following components by mass percentage: Zr 0.02-0.15%, Er 0.01-0.2%, B 0.01-0.04% , Fe≤0.20%, Si≤0.05%, (V+Ti+Cr+Mn)≤0.01%, and the balance is aluminum. The alloy is added with Zr element while also adding trace rare earth Er element to modify the alloy and optimize the adjustment of alloy element content, which ensures the mechanical properties of the alloy and improves the electrical conductivity. The electrical conductivity of the heat-resistant aluminum alloy monofilament material obtained is ≥61.5% IACS, tensile strength ≥160MPa, elongation >3.5%, heat resistance temperature ≥150°C, and the residual strength rate after heating at 230°C for 1 hour is greater than 90%.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloys, and in particular relates to a heat-resistant Al-Zr-Er alloy wire material with high electrical conductivity and a preparation method thereof. Background technique [0002] The heat-resistant aluminum alloy wire is a special expansion wire with good performance. Using large-capacity heat-resistant aluminum alloy wire to carry out the expansion and transformation of the existing line, under the principle of not replacing the pole tower as much as possible, it can not only improve the transmission capacity of the line, but also reduce The overall cost of the project. At present, the conductivity of existing heat-resistant aluminum alloy wires with a heat-resistant temperature of 150°C is only 60% IACS, which is difficult to meet the needs of long-distance, large-capacity transmission line construction projects and power grid expansion and reconstruction projects. With the rapid development...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/03C22C1/06C22F1/04H01B1/02
CPCC22C1/026C22C1/03C22C1/06C22C21/00C22F1/04H01B1/023
Inventor 肖翔郑志凯吴浩杨中玉周泽宇李红英
Owner CHINALCO MATERIALS APPL RES INST CO LTD
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